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Kang JH, Yoo SD, Han KH, Jeong SJ, Lee HJ, Yoo JH, Shin DH, Kim DW, Park ES, Park CW. Characterization of Channeling Effects Applied to Extended-Release Matrix Tablets Containing Pirfenidone. Chem Pharm Bull (Tokyo) 2023; 71:678-686. [PMID: 37357388 DOI: 10.1248/cpb.c23-00216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Pirfenidone (PRF) is an anti-fibrotic agent that has been approved by the Food and Drug Administration (FDA) for the treatment of mild to moderate idiopathic pulmonary fibrosis. However, the current oral administration dosing regimen of PRF is complex and requires high doses. Patients are instructed to take PRF three times daily, with each dose consisting of up to three capsules or tablets (600 mg/d or 1.8 g/d of PRF) taken with food. To improve the dosing regimen, efforts are being made to develop an extended-release tablet with a zero-order release pattern. In this study, two types of extended-release matrix tablets were compared: non-channeled extended-release matrix tablets (NChMT) and channeled extended-release matrix tablets (ChMT). In vitro release tests, swelling and erosion index, rheology studies, and X-ray microcomputed tomography (XRCT), were conducted. The results indicated that ChMT maintained a zero-order release pattern with a constant release rate, while NChMT exhibited a decreased release rate in the latter half of the dissolution. ChMT exhibited accelerated swelling and erosion compared to other formulations, and this was made possible by the presence of channels within the tablet. These channels allowed for thorough wetting and swelling throughout the entire depth of the tablet. The formation of channels was confirmed through XRCT images. In conclusion, the presence of channels in ChMT tablets increased the rate of swelling and erosion, resulting in a zero-order release pattern. This development offers the potential to improve the dosage of PRF and reduce its associated side effects.
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Affiliation(s)
- Ji-Hyun Kang
- College of Pharmacy, Chungbuk National University
- School of Pharmacy and Institute of New Drug Development, Jeonbuk National University
| | | | - Ki-Hun Han
- College of Pharmacy, Chungbuk National University
| | | | - Hyo-Jung Lee
- College of Pharmacy, Chungbuk National University
| | - Je Hwa Yoo
- College of Pharmacy, Chungbuk National University
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2
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Baek JY, Kim BH, Kim DW, Lee WY, Kim CE, Kim HY, Pyo J, Park ES, Kang KS. Hair Growth Effect of DN106212 in C57BL/6 Mouse and Its Network Pharmacological Mechanism of Action. Curr Issues Mol Biol 2023; 45:5071-5083. [PMID: 37367071 DOI: 10.3390/cimb45060322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/30/2023] [Accepted: 06/06/2023] [Indexed: 06/28/2023] Open
Abstract
Centipeda minima (CMX) has been widely investigated using network pharmacology and clinical studies for its effects on hair growth via the JAK/STAT signaling pathway. Human hair follicle papilla cells exhibit hair regrowth through the expression of Wnt signaling-related proteins. However, the mechanism of action of CMX in animals has not been elucidated fully. This study examined the effect of induced hair loss and its side-effects on the skin, and observed the mechanism of action of an alcoholic extract of CMX (DN106212) on C57BL/6 mice. Our results showed that DN106212 was more effective in promoting hair growth than dimethyl sulfoxide in the negative control and tofacitinib (TF) in the positive control when mice were treated with DN106212 for 16 days. We confirmed that DN106212 promotes the formation of mature hair follicles through hematoxylin and eosin staining. We also found that the expression of vascular endothelial growth factor (Vegfa), insulin-like growth factor 1 (Igf1), and transforming growth factor beta 1 (Tgfb1) is related to hair growth using PCR. DN106212-treated mice had significantly higher expression of Vegfa and Igf1 than TF-treated ones, and inhibiting the expression of Tgfb1 had similar effects as TF treatment. In conclusion, we propose that DN106212 increases the expression of hair growth factors, promotes the development of hair follicles, and promotes hair growth. Although additional experiments are needed, DN106212 may serve as an experimental basis for research on natural hair growth-promoting agents.
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Affiliation(s)
- Ji Yun Baek
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Byoung Ha Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dong-Wook Kim
- College of Pharmacy, Wonkwang University, Iksan 54538, Republic of Korea
| | - Won-Yung Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Chang Eop Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Hyun-Young Kim
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea
| | - Jaesung Pyo
- College of Pharmacy, Kyungsung University, Busan 48434, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
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3
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Liu Y, Hoang TK, Park ES, Freeborn J, Okeugo B, Tran DQ, Rhoads JM. Probiotic-educated Tregs are more potent than naïve Tregs for immune tolerance in stressed new-born mice. Benef Microbes 2023; 14:73-84. [PMID: 36815493 PMCID: PMC10124588 DOI: 10.3920/bm2022.0095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
When new-born mice are subjected to acute maternal separation stress, cow-milk based formula feeding, and brief recurrent hypoxia with cold stress, they develop gut inflammation similar to the phenotype of neonatal necrotizing enterocolitis, characterised by an increase in gut mucosal effector T (Teffs) and reduced Foxp3+ regulatory T (Tregs) cells. The imbalance can be prevented by probiotic Limosilactobacillus reuteri DSM 17938 (LR 17938). We hypothesised that LR 17938 could potentiate a tolerogenic function of Tregs. To analyse whether LR 17938 can educate Tregs to improve their tolerogenic potency during neonatal stress, we isolated T cells (Tregs and Teffs) from 'donor' mice fed with either LR 17938 (107 cfu) or control media. The cells were adoptively transferred (AT) by intraperitoneal injection (5 × 105 cells/mouse) to new-born (d5) recipient mice. Mice were then separated from their dams, fed formula by gavage, and exposed to hypoxia and cold stress (NeoStress) for 4 days. We analysed the percentage of Tregs in CD4+T helper cells in the intestine (INT) and mesenteric lymph nodes (MLN) of recipient mice. We found that: (1) the percentage of Tregs in the INT and MLN following NeoStress were significantly reduced compared to dam-fed unstressed mice; (2) AT of either naïve Tregs or LR-educated Tregs to mice with Neostress increased the percentage of Tregs in the INT and MLN compared to the percentage in NeoStress mice without Treg treatment; however, LR-educated Tregs increased the Tregs significantly more than naïve Tregs; and (3) AT of LR-educated Tregs reduced pro-inflammatory CD44+Foxp3-NonTregs and inflammatory CX3CR1+ dendritic cells in the intestinal mucosa of NeoStress mice. In conclusion, adoptive transfer of Tregs promotes the generation of and/or migration of endogenous Tregs in the intestinal mucosa of recipient mice. Importantly, probiotic-educated Tregs are more potent than naïve Tregs to enhance immune tolerance following neonatal stress.
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Affiliation(s)
- Y Liu
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
| | - T K Hoang
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
| | - E S Park
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
| | - J Freeborn
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
| | - B Okeugo
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
| | - D Q Tran
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
| | - J M Rhoads
- Department of Pediatrics, Division of Gastroenterology, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 3.137, Houston, TX 77030, USA
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Park HR, Seok SH, Park ES. Complexation of levocetirizine with ion-exchange resins and its effect on the stability of powder mixtures containing levocetirizine and montelukast. J Pharm Investig 2022. [DOI: 10.1007/s40005-022-00604-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Han JK, Kim JY, Choi DH, Park ES. A formulation development strategy for dual-release bilayer tablets: An integrated approach of quality by design and a placebo layer. Int J Pharm 2022; 618:121659. [PMID: 35292397 DOI: 10.1016/j.ijpharm.2022.121659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 02/20/2022] [Accepted: 03/09/2022] [Indexed: 10/18/2022]
Abstract
Although dual-release mechanism bilayer tablets containing one drug in both immediate- and sustained-release layers are widely used to improve therapeutic efficiency, studies quantitatively analyzing the drug amount released from each layer and the mutual effect of each layer's mechanical properties on drug product quality are limited. Here, the formulation of a dual-release bilayer tablet containing sarpogrelate HCl was optimized with a placebo layer and quality by design (QbD) approach. The placebo layer was developed to replace the active pharmaceutical ingredient and its mechanical properties were evaluated. The formulation was developed using the placebo layer to quantitatively analyze the drug released from each layer. The mixture design and Monte Carlo simulation enabled robust design space identification. The mutual effect of each layer's mechanical properties on drug product quality was confirmed by multivariate analysis using the optimal settings in the design space. The optimized formulation was characterized by comparison with a reference drug for various quality attributes and in vivo pharmacokinetic parameters, which ensured the bioequivalence of the optimized bilayer tablet with the reference drug. This study shows that the integration of QbD and a placebo layer is an effective optimization strategy for dual-release bilayer tablets containing one drug in different layers.
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Affiliation(s)
- Jong Kwon Han
- School of Pharmacy, Sungkyunkwan University, Suwon-si 16419, Republic of Korea
| | - Ji Yeon Kim
- Department of Pharmaceutical Engineering, Inje University, Gimhae-si 50819, Republic of Korea
| | - Du Hyung Choi
- Department of Pharmaceutical Engineering, Inje University, Gimhae-si 50819, Republic of Korea.
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon-si 16419, Republic of Korea.
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Hwang KM, Choi MS, Seok SH, Park ES. Development of self-microemulsifying tablets containing dutasteride for enhanced dissolution and pharmacokinetic profile. Int J Pharm 2022; 618:121660. [PMID: 35292395 DOI: 10.1016/j.ijpharm.2022.121660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/19/2022] [Accepted: 03/09/2022] [Indexed: 11/25/2022]
Abstract
This study aimed to develop self-microemulsifying tablets containing the hydrophobic drug dutasteride for easy administration and high in vivo absorption. The candidate lipids and surfactants were formulated into a self-microemulsifying drug delivery system (SMEDDS), and their mean droplet size upon dilution was evaluated. The SMEDDS containing Capmul® MCM, Captex® 355, and Cremophor® EL showed improved dissolution in the gastric medium when compared to the dissolution of the conventional product (Avodart®) and the raw drug. Among the various porous silicon microparticles for solidifying SMEDDS, Neusilin® US2 showed favorable properties in terms of maximum adsorption capacity, powder flow, and compaction. However, the amount of drug released from the solidified SMEDDS after the adsorption process was lower than that of liquid SMEDDS, indicating incomplete desorption. After observing the effect of the solid-to-liquid ratio and pre-filling the pores with blank SMEDDS, complete desorption was obtained when the pores were first adsorbed with polyvinylpyrrolidone. The self-microemulsifying tablets exhibited improved bioavailability (29.9% and 15.2%) compared to the conventional soft gelatin product. Therefore, the proposed system could successfully solubilize the hydrophobic drug while maintaining rapid and complete desorption from the solid carrier, resulting in enhanced in vivo performance.
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Affiliation(s)
- Kyu-Mok Hwang
- Pharmaceutical Technology Research Center, JW Pharmaceutical Corporation, Seoul 06725, Republic of Korea
| | - Min-Seok Choi
- Pharmaceutical Technology Research Center, JW Pharmaceutical Corporation, Seoul 06725, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Su Hyun Seok
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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7
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Cho CH, Kim JY, Park ES. Corrigendum to “Utilization of a compaction simulator to formulate mini-tablets containing high dose of acyclovir” [J. Drug Deliv. Sci. Technol. 64 (2021) 102602]. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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9
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Cho CH, Kim JY, Park ES. Utilization of a compaction simulator to formulate mini-tablets containing high dose of acyclovir. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Lee HJ, Kwon YB, Kang JH, Oh DW, Park ES, Rhee YS, Kim JY, Shin DH, Kim DW, Park CW. Inhaled bosentan microparticles for the treatment of monocrotaline-induced pulmonary arterial hypertension in rats. J Control Release 2021; 329:468-481. [PMID: 32871206 DOI: 10.1016/j.jconrel.2020.08.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 07/28/2020] [Accepted: 08/24/2020] [Indexed: 02/04/2023]
Abstract
The conventional treatment of pulmonary arterial hypertension (PAH) with oral bosentan hydrate has limitations related to the lack of pulmonary selectivity. In this study, we verified the hypothesis of the feasibility of dry powder inhalation of bosentan as an alternative to oral bosentan hydrate for the treatment of PAH. Inhalable bosentan microparticles with the capability of delivery to the peripheral region of the lungs and enhanced bioavailability have been formulated for PAH. The bosentan microparticles were prepared by the co-spray-drying method with bosentan hydrate and mannitol at different weight ratios. The bosentan microparticles were then characterized for their physicochemical properties, in vitro dissolution behavior, and in vitro aerodynamic performance. The in vivo pharmacokinetics and pathological characteristics were evaluated in a monocrotaline-induced rat model of PAH after intratracheal powder administration of bosentan microparticles, in comparison to orally administered bosentan hydrate. The highest performance bosentan microparticles, named SDBM 1:1, had irregular and porous shape. These microparticles had not only the significantly highest aerosol performance (MMAD of 1.91 μm and FPF of 51.68%) in the formulations, but also significantly increased dissolution rate, compared with the raw bosentan hydrate. This treatment to the lungs was also safe, as evidenced by the cytotoxicity assay. Intratracheally administered SDBM 1:1 elicited a significantly higher Cmax and AUC0-t that were over 10 times higher, compared with those of the raw bosentan hydrate administered orally in the same dose. It also exhibited ameliorative effects on monocrotaline-induced pulmonary arterial remodeling, and right ventricular hypertrophy. The survival rate of the group administrated SDBM1:1 intratracheally was 0.92 at the end of study (Positive control and orally administrated groups were 0.58 and 0.38, respectively). In conclusion, SDBM 1:1 showed promising in vitro and in vivo results with the dry powder inhalation. The inhaled bosentan microparticles can be considered as a potential alternative to oral bosentan hydrate for the treatment of PAH.
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Affiliation(s)
- Hyo-Jung Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Yong-Bin Kwon
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Ji-Hyun Kang
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Dong-Won Oh
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun 55338, Republic of Korea
| | - Dae-Hwan Shin
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju 28503, Republic of Korea.
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea.
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Dmowski W, Yoo GH, Gierlotka S, Wang H, Yokoyama Y, Park ES, Stelmakh S, Egami T. High Pressure Quenched Glasses: unique structures and properties. Sci Rep 2020; 10:9497. [PMID: 32528160 PMCID: PMC7289830 DOI: 10.1038/s41598-020-66418-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 05/20/2020] [Indexed: 11/27/2022] Open
Abstract
Zr-based metallic glasses are prepared by quenching supercooled liquid under pressure. These glasses are stable in ambient conditions after decompression. The High Pressure Quenched glasses have a distinct structure and properties. The pair distribution function shows redistribution of the Zr-Zr interatomic distances and their shift towards smaller values. These glasses exhibit higher density, hardness, elastic modulus, and yield stress. Upon heating at ambient pressure, they show volume expansion and distinct relaxation behavior, reaching an equilibrated state above the glass transition. These experimental results are consistent with an idea of pressure-induced low to high density liquid transition in the supercooled melt.
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Affiliation(s)
- W Dmowski
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA.
| | - G H Yoo
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - S Gierlotka
- Institute of High Pressure Physics, Polish Academy of Science, Warsaw, Poland
| | - H Wang
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA
| | - Y Yokoyama
- Materials Research Institute, Tohoku University, Sendai, Japan
| | - E S Park
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - S Stelmakh
- Institute of High Pressure Physics, Polish Academy of Science, Warsaw, Poland
| | - T Egami
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA.,Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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Nguyen TT, Park HR, Cho CH, Hwang KM, Park ES. Investigation of critical factors affecting mechanical characteristics of press-coated tablets using a compaction simulator. Int J Pharm 2020; 582:119308. [PMID: 32272166 DOI: 10.1016/j.ijpharm.2020.119308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/17/2020] [Accepted: 04/04/2020] [Indexed: 10/24/2022]
Abstract
Press-coated tablets have become an indispensable dosage form in chronotherapeutic drug delivery. Drug release from press-coated tablets has been extensively studied, yet there is little knowledge about their mechanical characteristics. This study aimed to systematically investigate the effects of critical factors on the structure, layer adhesion, and delamination tendency of the tablets. Material elasticity was found to play an important role in determining tablet structure in that excessive elastic mismatch between core and shell materials caused tablet defects during decompression and ejection. Unlike bilayer tablets, the overall strength of press-coated tablets was more affected by binding capacity of coating materials than by the core properties. Shell/core ratio was another factor affecting tablet integrity against external stresses. To mitigate the risk of delamination, poor layer adhesion must be compensated by increasing the coating thickness or enhanced by optimizing the formulation and process (e.g., core plasticity/brittleness, initial core solid fraction, and compression speed). X-ray micro-computed tomography revealed the presence of a shell-core gap and inhomogeneous density distribution within the tablet where the side coat appeared as the least dense and weakest region. These findings will enable the improvement of tablet quality and widen the application of press coating in industrial manufacturing.
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Affiliation(s)
- Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hye-Ryeong Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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13
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Kang JH, Chun MH, Cho MS, Kwon YB, Choi JC, Kim DW, Park CW, Park ES. Preparation and characterization of metformin hydrochloride controlled-release tablet using fatty acid coated granules. Drug Dev Ind Pharm 2020; 46:852-860. [PMID: 32338551 DOI: 10.1080/03639045.2020.1762198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Metformin hydrochloride (MFM) is often used as a controlled-release (CR) tablet to reduce dosing frequency. However, the MFM CR tablet contains significant amounts of excipients and the tablet size is also large. Dosing convenience and patient compliance can be increased by reducing the size of the CR tablets. The aim of this study was to prepare and evaluate the MFM controlled-release tablet (MFM-CRT) using two types of release modulators, inner and outer. The MFM-CRT was prepared by coating the MFM granules using a binder solution containing aluminum stearate (ALS) as the inner release-modulator, and polyethylene oxide (PEO) as the outer release-modulator. The dispersion stability of the binder solution was optimized by the dispersion analyzer. The MFM-CRT was evaluated for dissolution rate and tablet volume. Additionally, dissolution behavior and dissolution kinetics of the MFM-CRT were analyzed using micro-computed tomography (micro-CT). Although the optimal MFM-CRT showed no difference in the release rate as compared to the commercially available product of Glucophage® XR 500 mg (f2 value: 72), the length of the long axis was reduced by 6 mm and the weight was reduced by about 27%. We expect patient compliance to improve because of effective sustained release and volume reduction of MFM-CRT.
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Affiliation(s)
- Ji-Hyun Kang
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Myung-Hee Chun
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea.,KyungDong Pharmaceutical Co., Ltd, Hwaseong, Republic of Korea
| | - Mi-Seo Cho
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Yong-Bin Kwon
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Jae-Cheol Choi
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju, Republic of Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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14
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Cho CH, Kim JY, Park ES. Systematic approach to elucidate compaction behavior of acyclovir using a compaction simulator. Int J Pharm 2020; 575:118904. [PMID: 31846727 DOI: 10.1016/j.ijpharm.2019.118904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/22/2019] [Accepted: 11/23/2019] [Indexed: 11/19/2022]
Abstract
In this research, various approaches were attempted with a compaction simulator to investigate the unidentified compaction behavior of acyclovir, a model compound. Various indicators for the compaction behavior of acyclovir were obtained and compared with those of three commonly used excipients with relatively well-known compaction behavior. From two frequently used powder compaction models, the Heckel and Walker models, curvature of plot, yield stress, D0, SRS value, and W value were acquired. In addition, compression and elastic energies were obtained during the loading and unloading phases, respectively. The ratio of the two energies was also utilized. To characterize the mechanical properties of materials during bond formation, the radial tensile strength of powder compacts was measured. For all evaluations, the effects of compaction rate and lubrication were studied simultaneously. We found that primary particles of acyclovir were compacted mainly by plastic flow, with high viscoelasticity and low particle interactions. Their bond formation was highly sensitive to strain rate and lubrication. This study showed the potential application of a compaction simulator to elucidate the compaction behavior of a material of interest.
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Affiliation(s)
- Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun 55338, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Cho CH, Kim JY, Park ES. Effects of process parameters of rotary tablet press on die filling behavior during mini-tablet production: Comparison with conventional tablet. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.11.109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Nguyen TT, Hwang KM, Kim SH, Park ES. Development of novel bilayer gastroretentive tablets based on hydrophobic polymers. Int J Pharm 2020; 574:118865. [PMID: 31765783 DOI: 10.1016/j.ijpharm.2019.118865] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/31/2019] [Accepted: 11/10/2019] [Indexed: 10/25/2022]
Abstract
This study aimed to develop a bilayer gastroretentive (GR) tablet containing an insoluble drug and ascertain the potential of using hydrophobic polymers in GR matrix systems. Highly porous tablets were prepared using a camphor-based sublimation technique. After the screening of several commonly used polymers, two types of GR layers, a conventional hydrophilic GR layer and a hydrophobic GR layer, were designed. The optimal drug layer comprising Metolose® 90SH-100SR and dicalcium phosphate provided not only a gradual matrix erosion but also high strength after hydration. Regarding the GR layers, the hydrophobic layer based on Kollidon® SR was superior to the hydrophilic layer made of PEO 7 M in terms of wet strength, implying a higher resistance to mechanical stresses upon water absorption. Also, the excellent tableting properties of Kollidon® SR and the effects of curing in improving its matrix hardness resulted in porous tablets with better mechanical strength. Moreover, good flowability and low cohesion of Kollidon® SR formulation were advantageous in direct compression. In conclusion, novel bilayer GR tablets were successfully developed, indicating the potential for widening the application of GR systems to insoluble drugs. The results also suggested numerous advantages of incorporating Kollidon® SR into the production of GR tablets.
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Affiliation(s)
- Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Su-Hyeon Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Ryu CW, Dmowski W, Kelton KF, Lee GW, Park ES, Morris JR, Egami T. Curie-Weiss behavior of liquid structure and ideal glass state. Sci Rep 2019; 9:18579. [PMID: 31819088 PMCID: PMC6901545 DOI: 10.1038/s41598-019-54758-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/12/2019] [Indexed: 12/02/2022] Open
Abstract
We present the results of a structural study of metallic alloy liquids from high temperature through the glass transition. We use high energy X-ray scattering and electro-static levitation in combination with molecular dynamics simulation and show that the height of the first peak of the structure function, S(Q) - 1, follows the Curie-Weiss law. The structural coherence length is proportional to the height of the first peak, and we suggest that its increase with cooling may be related to the rapid increase in viscosity. The Curie temperature is negative, implying an analogy with spin-glass. The Curie-Weiss behavior provides a pathway to an ideal glass state, a state with long-range correlation without lattice periodicity, which is characterized by highly diverse local structures, reminiscent of spin-glass.
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Affiliation(s)
- C W Ryu
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA
- Research Institute of Advanced Materials, Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - W Dmowski
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA
| | - K F Kelton
- Department of Physics and Institute of Materials Science and Engineering, Washington University, St. Louis, MO, 63130, USA
| | - G W Lee
- Korea Research Institute of Standards and Science, Daejon, 34113, Republic of Korea
- Department of Nano Science, University of Science and Technology, Daejon, 34113, Republic of Korea
| | - E S Park
- Research Institute of Advanced Materials, Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - J R Morris
- Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
- Ames Laboratory, Ames, IA, 50011, USA
| | - T Egami
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA.
- Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.
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Hwang KM, Cho CH, Yoo SD, Cha KI, Park ES. Continuous twin screw granulation: Impact of the starting material properties and various process parameters. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.08.062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Lee EH, Kim SJ, Ha EJ, Park ES, Choi JY, Leem AY, Kim SY, Park MS, Kim YS, Kang YA. Treatment of latent tuberculous infection among health care workers at a tertiary hospital in Korea. Int J Tuberc Lung Dis 2019; 22:1336-1343. [PMID: 30355414 DOI: 10.5588/ijtld.18.0280] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To evaluate the acceptance of, adherence to, and outcomes of latent tuberculous infection (LTBI) treatment among health care workers (HCWs). DESIGN This was a retrospective study in a tertiary hospital in Korea. From May to August 2017, 2190 HCWs simultaneously underwent a tuberculin skin test (TST) and interferon-gamma release assay (IGRA). LTBI was diagnosed if the TST induration was 10 mm or IGRA results were positive. RESULTS Of 2190 HCWs tested, 1006 (45.9%) were diagnosed with LTBI. Of these, 655 (65.1%) HCWs visited out-patient clinics, 234 (35.7%) of whom were advised treatment by physicians. Among these, 120 (51.3%) accepted the physicians' recommendations. In general, HCWs who were older, male and smoked were less likely to visit out-patient clinics. Sixty (50%) HCWs received 3 months of isoniazid plus rifampicin (3HR) and 57 (47.5%) HCWs received 4 months of rifampicin (4R). The proportion of HCWs with 2 side effects (3HR 20% vs. 4R 7.0%, P = 0.041) and drug stoppage rate (3HR 20% vs. 4R 5.3%, P = 0.017) were higher in the 3HR group than in the 4R group. Of the 120 HCWs, 78 (65%) completed LTBI treatment. CONCLUSION Overall, the acceptance and completion rate for LTBI treatment was not adequate. For effective LTBI management in HCWs, further programmatic strategies are needed.
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Affiliation(s)
- E H Lee
- Division of Pulmonology, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul
| | - S J Kim
- Infection Control Office, Severance Hospital, Seoul
| | - E J Ha
- Infection Control Office, Severance Hospital, Seoul
| | - E S Park
- Infection Control Office, Severance Hospital, Seoul
| | - J Y Choi
- Infection Control Office, Severance Hospital, Seoul, Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - A Y Leem
- Division of Pulmonology, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul
| | - S Y Kim
- Division of Pulmonology, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul
| | - M S Park
- Division of Pulmonology, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul
| | - Y S Kim
- Division of Pulmonology, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul
| | - Y A Kang
- Division of Pulmonology, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul
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Lee HG, Park YS, Jeong JH, Kwon YB, Shin DH, Kim JY, Rhee YS, Park ES, Kim DW, Park CW. Physicochemical properties and drug-release mechanisms of dual-release bilayer tablet containing mirabegron and fesoterodine fumarate. Drug Des Devel Ther 2019; 13:2459-2474. [PMID: 31413543 PMCID: PMC6661997 DOI: 10.2147/dddt.s212520] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/01/2019] [Indexed: 11/25/2022]
Abstract
Introduction: In this study, a dual release bi-layer tablet containing Fesoterodine fumarate (Fst) 5 mg and Mirabegron (Mrb) 50 mg was prepared to investigate the different release behavior of each drug in bilayer tablet. The bilayer tablet was prepared based on monolayer-tablet formulation of each drug. Methods: The optimized bi-layer tablet showed an in vitro dissolution profile similar to commercial reference tablets Toviaz and Betmiga, based on a satisfactory similarity factor. Drug-release kinetics of each drug in the bilayer tablet were evaluated based on dissolution profiles. Drug-release behavior was evaluated by observing the surface of each layer by scanning electron microscopy and measuring the changes in weight and volume of the tablet during dissolution. Drug transfer between each layer was also investigated by Fourier -transform infrared spectroscopic imaging by observing the cross-section of the bilayer tablet cut vertically during dissolution. Results: The release of Fst was well suited for the Higuchi model, and the release of Mrb was well suited for the Hixson-crowell model. Compared with dissolution rate of each monolayer tablet, that of Fst in the bilayer tablet was slightly reduced (5%), but the dissolution rate of Mrb in bilayer tablet was dramatically decreased (20%). Also, a drug-release study confirmed that polymer swelling was dominant in Fst layer compared with polymer erosion, and degradation was dominant in MRB layer. Fourier-transform infrared imaging and 3-D image reconstruction showed that drug transfer in the bilayer tablet correlates with the results of drug-release behavior. Conclusion: These findings are expected to provide scientific insights in the development of a dual-release bilayer drug-delivery system for Fst and Mrb.
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Affiliation(s)
- Hong-Goo Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, South Korea
| | - Yun-Sang Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, South Korea
| | - Jin-Hyuk Jeong
- College of Pharmacy, Chungbuk National University, Cheongju 28160, South Korea
| | - Yong-Bin Kwon
- College of Pharmacy, Chungbuk National University, Cheongju 28160, South Korea
| | - Dae Hwan Shin
- College of Pharmacy, Chungbuk National University, Cheongju 28160, South Korea
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju 55338, South Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, South Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, South Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju 28530, South Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, South Korea
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Nguyen TT, Yi EJ, Hwang KM, Cho CH, Park CW, Kim JY, Rhee YS, Park ES. Formulation and evaluation of carrier-free dry powder inhaler containing sildenafil. Drug Deliv Transl Res 2019; 9:319-333. [PMID: 30276666 DOI: 10.1007/s13346-018-0586-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Pulmonary delivery of sildenafil for the treatment of pulmonary arterial hypertension could overcome the limitations of intravenous and oral administration routes, such as poor patient compliance and systemic side effects. In this study, a carrier-free dry powder inhaler (DPI) formulation was developed, using spray drying technique and L-leucine as a dispersibility enhancer. Sildenafil citrate salt and sildenafil free base were evaluated for drug transport using a Calu-3 cell model, and their suitability for DPI production by spray drying was tested. Characteristics of the resultant carrier-free DPI powders were examined, namely crystallinity, morphology, size distribution, density, zeta potential, and aerodynamic performance. A Box-Behnken design was adopted to optimize the formulation and process conditions, including leucine amount, fraction of methanol in spraying solvent, and inlet temperature. While both sildenafil forms exhibited sufficient permeability for lung absorption, only sildenafil base resulted in DPI powders which were stable for 6 months. The introduction of leucine into the formulations effectively enhanced aerodynamic performance of the powders and particles with favorable size, shape, and density were produced. The optimal DPI formulation determined from experimental design possesses excellent aerodynamic performance with 89.39% emitted dose and 80.08% fine particle fraction, indicating the possibility of incorporating sildenafil into carrier-free DPIs for pulmonary delivery.
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Affiliation(s)
- Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Gyeonggi-do, Republic of Korea
| | - Eun-Jin Yi
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Gyeonggi-do, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Gyeonggi-do, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Gyeonggi-do, Republic of Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju, 361-763, Republic of Korea
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun, 565-701, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Gyeonggi-do, Republic of Korea.
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Hwang KM, Kim SY, Nguyen TT, Cho CH, Park ES. Use of roller compaction and fines recycling process in the preparation of erlotinib hydrochloride tablets. Eur J Pharm Sci 2019; 131:99-110. [PMID: 30716380 DOI: 10.1016/j.ejps.2019.01.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/29/2018] [Accepted: 01/30/2019] [Indexed: 12/28/2022]
Abstract
This study focuses on improving the manufacturing process for a generic immediate-release tablet containing erlotinib hydrochloride by adding a fines recycling process during roller compaction. Due to the large fraction of small-sized API particles, the starting powder mixture was inconsistently fed into the roller compactor. Consequently, poorly flowing granules with a high ratio of fines were produced. A fines recycling step was, therefore, added to the existing roller compaction process to minimize the risks caused by the poor granule flow. A laboratory scale roller compactor and a tablet simulator were used to prepare granules at various process conditions. The effect of dry granulation parameters on size distribution, API distribution, powder flow, compaction properties, and dissolution profile was evaluated. The granule batch after fines recycling had markedly improved size distribution and flowability while maintaining acceptable tablet tensile strength and rapid dissolution profile. The application of the fines recycling process at commercial scale resulted in reliable dissolution performance and batch-to-batch consistency, which were further confirmed by bioequivalence to the reference product. Understanding how granule properties are impacted by the fines recycling process may enable fine-tuning of the dry granulation process for optimal product quality.
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Affiliation(s)
- Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang-Yeop Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea; Boryung Pharmaceutical Co., Ltd., Ansan 15425, Republic of Korea
| | - Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Han CS, Kim S, Oh DW, Yoon JY, Park ES, Rhee YS, Kim JY, Shin DH, Kim DW, Park CW. Preparation, Characterization, and Stability Evaluation of Taste-Masking Lacosamide Microparticles. Materials (Basel) 2019; 12:ma12061000. [PMID: 30917621 PMCID: PMC6470747 DOI: 10.3390/ma12061000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/14/2019] [Accepted: 03/22/2019] [Indexed: 11/30/2022]
Abstract
Lacosamide (LCM) is a third-generation antiepileptic drug. Selective action of the drug on voltage-gated sodium channels reduces side effects. Oral administration of LCM shows good pharmacokinetic profile. However, the bitter taste of LCM is a barrier to the development of oral formulations. In this study, we aimed to prepare encapsulated LCM microparticles (MPs) for masking its bitter taste. Encapsulated LCM MPs were prepared with Eudragit® E100 (E100), a pH-dependent polymer, by spray drying. Three formulations comprising different ratios of LCM and E100 (3:1, 1:1, and 1:3) were prepared. Physicochemical tests showed that LCM was in an amorphous state in the prepared formulations, and they were not miscible. LCM-E100 (1:3) had a rough surface due to surface enrichment of LCM. Increased E100 ratio in LCM-E100 MPs resulted in better taste-making effectiveness: LCM-E100 (1:1) and LCM-E100 (1:3) showed good taste-masking effectiveness, while LCM-E100 (3:1) could not mask the bitter taste of LCM. Dissolution results of the prepared formulations showed good correlation with taste-masking effectiveness. Nevertheless, high E100 ratio reduced the stability of the prepared formulations. Especially the difference in initial dissolution profile observed for LCM-E100 (1:3) indicated rapid reduction in taste-masking effectiveness and surface recrystallization. Therefore, LCM-E100 formulation in the ratio of 1:1 was selected as the best formulation with good taste-masking effectiveness and stability.
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Affiliation(s)
- Chang-Soo Han
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Seungsu Kim
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Dong-Won Oh
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Jeong Yeol Yoon
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Yun-Seok Rhee
- College of Pharmacy, Research Institute of Pharmaceutical sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun 55338, Korea.
| | - Dae Hwan Shin
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju 28530, Korea.
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
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Kim S, Hwang KM, Park YS, Nguyen TT, Park ES. Preparation and evaluation of non-effervescent gastroretentive tablets containing pregabalin for once-daily administration and dose proportional pharmacokinetics. Int J Pharm 2018; 550:160-169. [PMID: 30138708 DOI: 10.1016/j.ijpharm.2018.08.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/27/2018] [Accepted: 08/19/2018] [Indexed: 01/29/2023]
Abstract
The main purpose of this study was to develop gastroretentive tablets with floating and swelling properties for once-daily administration of pregabalin. The non-effervescent floating and swelling tablets were prepared using wet granulation and compaction, which are widely used and easily accessible. All formulations showed sustained release patterns and maintained buoyancy for over 24 h. The amount of hydroxypropyl methylcellulose and crospovidone were found to be critical factors affecting in vitro dissolution and floating properties of the prepared tablets. The optimized tablets containing 300 mg of pregabalin started to float within 3 min and swelled above 12.8 mm, the reported pyloric sphincter diameter during the fed state, in all dimensions including length, width, and thickness. In vivo results in beagle dogs indicated that the optimized formulations are suitable as once-daily dosage forms, and dose proportionality was observed in doses ranging from 75 to 300 mg. Additionally, the dogs administered with the formulation having poor in vitro gastroretentive properties showed highly variable and reduced extent of absorption, signifying the necessity of the gastroretentive drug delivery system. In conclusion, the developed non-effervescent floating tablets are promising candidates for once-daily delivery of pregabalin.
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Affiliation(s)
- Seongkyu Kim
- Yuhan Research Institute, Yuhan Corporation, Yongin 17084, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yoong Sik Park
- Yuhan Research Institute, Yuhan Corporation, Yongin 17084, Republic of Korea
| | - Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Jantrawut P, Boonsermsukcharoen K, Thipnan K, Chaiwarit T, Hwang KM, Park ES. Enhancement of Antibacterial Activity of Orange Oil in Pectin Thin Film by Microemulsion. Nanomaterials (Basel) 2018; 8:E545. [PMID: 30029478 PMCID: PMC6070789 DOI: 10.3390/nano8070545] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 07/13/2018] [Accepted: 07/17/2018] [Indexed: 11/17/2022]
Abstract
The purpose of this study was to prepare orange oil microemulsion (ME) and to investigate the antimicrobial activity of film containing orange oil ME. First, surfactants and co-surfactants were screened on their efficiency to form ME using pseudo-ternary phase diagrams. The influences of surfactant and co-surfactant mass ratios were studied and optimized ME-loaded-films were prepared. Then, films containing orange oil ME were characterized by SEM and texture analyzer, and then evaluated for antimicrobial activity against Staphylococcus aureus and Propionibacterium acnes using an agar disc diffusion method. The results showed that Tween 80 as surfactant and propylene glycol as co-surfactant at a 1:1 ratio possessed the maximum ME area. Three ME formulations of ME 20, ME 25, and ME 30, which consisted of 20, 25, and 30% w/v of orange oil were prepared, respectively. All ME formulations showed particle sizes of about 60.26⁻80.00 nm, with broad a polydispersity index of 0.42. The orange oil ME films exhibited higher elastic values than the control. The diameters of inhibition zones for FME 20, FME 25, and FME 30 against P. acnes were 13.64, 15.18, and 16.10 mm, respectively. Only the FME 30 had an antimicrobial activity against S. aureus with 8.32 mm of inhibition zone. Contrarily, the control film had no antimicrobial activity against both bacteria. In conclusion, the present study found that the antibacterial activity of orange oil in pectin thin film could be enhanced by preparing orange oil as an ME before loading into pectin thin film.
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Affiliation(s)
- Pensak Jantrawut
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Kasidech Boonsermsukcharoen
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Kanyanut Thipnan
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Tanpong Chaiwarit
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea.
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea.
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Cho CH, Hwang KM, Hwang KM, Seok SH, Kim SH, Seo JW, Park ES. Preparation and characterization of high drug-loaded microgranules: Particle sizing and mechanical properties. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Choi JY, Hwang EH, Rha D, Park ES. Reliability and validity of the Korean-language version of the Communication Function Classification System in children with cerebral palsy. Child Care Health Dev 2018; 44:140-146. [PMID: 28929518 DOI: 10.1111/cch.12507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 07/05/2017] [Accepted: 08/07/2017] [Indexed: 12/01/2022]
Abstract
PURPOSE The Communication Function Classification System (CFCS) and Viking Speech Scale (VSS) are useful systems for describing the broad communication function and speech intelligibility, respectively, of children with cerebral palsy (CP). The aims of this study were to determine the reliability and validity of the Korean version of the CFCS and also to investigate the association between the CFCS and the VSS and other functional classifications for children with CP. MATERIALS AND METHODS Participants were 50 children with CP (33 males, 17 females; mean age 7.2 years, range 4-16 years) recruited from a rehabilitation hospital. We analysed the interrater and intrarater reliabilities of the Korean version of the CFCS and VSS between parents, a physiatrist, and a speech-language pathologist (SLP). The social function domain of the Paediatric Evaluation of Disability Inventory was assessed to examine the concurrent validity of the CFCS and VSS. RESULTS The intrarater reliabilities of the CFCS and VSS were excellent in a physiatrist (ƙ = 0.92, ƙ = 0.94, respectively) and an SLP (ƙ = 0.98, ƙ = 0.98) and very good in parents (ƙ = 0.87, ƙ = 0.89). The interrater reliability of the CFCS and VSS was very good between the physiatrist and SLP (ƙ = 0.87, ƙ = 0.89) and good between parents and the SLP (ƙ = 0.63, ƙ = 0.78) and between parents and the physiatrist (ƙ = 0.61, ƙ = 0.76). The CFCS and VSS were strongly related with the social function domain of Paediatric Evaluation of Disability Inventory. In addition, we found very strong associations between the VSS and CFCS. CONCLUSIONS The Korean version of the CFCS is a valid and reliable tool to classify communication ability and is strongly associated with the VSS, a reliable tool to classify speech intelligibility.
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Affiliation(s)
- J Y Choi
- Department of Rehabilitation Medicine, Severance Hospital, Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - E H Hwang
- Department of Rehabilitation Speech-Language Therapy, Severance Rehabilitation Hospital, Seoul, Korea
| | - D Rha
- Department of Rehabilitation Medicine, Severance Hospital, Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - E S Park
- Department of Rehabilitation Medicine, Severance Hospital, Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
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Ha JM, Seo JW, Kim SH, Kim JY, Park CW, Rhee YS, Park ES. Implementation of Quality by Design for Formulation of Rebamipide Gastro-retentive Tablet. AAPS PharmSciTech 2017; 18:3129-3139. [PMID: 28526986 DOI: 10.1208/s12249-017-0797-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 05/02/2017] [Indexed: 11/30/2022] Open
Abstract
The purpose of the present study was to develop a rebamipide (RBM) gastro-retentive (GR) tablet by implementing quality by design (QbD). RBM GR tablets were prepared using a sublimation method. Quality target product profile (QTPP) and critical quality attributes (CQAs) of the RBM GR tablets were defined according to the preliminary studies. Factors affecting the CQAs were prioritized using failure mode and effects analysis (FMEA). Design space and optimum formulation were established through a mixture design. The validity of the design space was confirmed using runs within the area. The QTPP of the RBM GR tablets was the orally administered GR tablet containing 300 mg of RBM taken once daily. Based on the QTPP, dissolution rate, tablet friability, and floating property were chosen as CQAs. According to the risk assessment, the amount of sustained-release agent, sublimating material, and diluent showed high-risk priority number (RPN) values above 40. Based on the RPN, these factors were further investigated using mixture design methodology. Design space of formulations was depicted as an overlaid contour plot and the optimum formulation to satisfy the desired responses was obtained by determining the expected value of each response. The similarity factor (f2) of the release profile between predicted response and experimental response was 89.463, suggesting that two release profiles are similar. The validity of the design space was also confirmed. Consequently, we were able to develop the RBM GR tablets by implementing the QbD concept. These results provide useful information for development of tablet formulations using the QbD.
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Oh DW, Kang JH, Lee HJ, Han SD, Kang MH, Kwon YH, Jun JH, Kim DW, Rhee YS, Kim JY, Park ES, Park CW. Formulation and in vitro/in vivo evaluation of chitosan-based film forming gel containing ketoprofen. Drug Deliv 2017; 24:1056-1066. [PMID: 28687046 PMCID: PMC8241006 DOI: 10.1080/10717544.2017.1346001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/16/2017] [Accepted: 06/20/2017] [Indexed: 02/02/2023] Open
Abstract
The film forming gel, adhered to skin surfaces upon application and formed a film, has an advantage onto skin to provide protection and continuous drug release to the application site. This study aimed to prepare a chitosan-based film forming gel containing ketoprofen (CbFG) and to evaluate the CbFG and film from CbFG (CbFG-film). CbFG were prepared with chitosan, lactic acid and various skin permeation enhancers. The physicochemical characteristics were evaluated by texture analysis, viscometry, SEM, DSC, XRD and FT-IR. To identify the mechanism of skin permeation, in vitro skin permeation study was conducted with a Franz diffusion cell and excised SD-rat and hairless mouse dorsal skin. In vivo efficacy assessment in mono-iodoacetate (MIA)-induced rheumatoid arthritis animal model was also conducted. CbFG was successfully prepared and, after applying CbFG to the excised rat dorsal skin, the CbFG-film was also formed well. The physicochemical characteristics of CbFG and CbFG-film could be explained by the grafting of oleic acid onto chitosan in the absence of catalysts. In addition, CbFG containing oleic acid had a higher skin permeation rate in comparison with any other candidate enhancers. The in vivo efficacy study also confirmed significant anti-inflammatory and analgesic effects. Consequently, we report the successful preparation of chitosan-based film forming gel containing ketoprofen with excellent mechanical properties, skin permeation and anti-inflammatory and analgesic effects.
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Affiliation(s)
- Dong-Won Oh
- Department of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Ji-Hyun Kang
- Department of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Hyo-Jung Lee
- Department of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Sang-Duk Han
- Dong-a Pharmaceutical Research Laboratory, Yongin, Republic of Korea
| | - Min-Hyung Kang
- Dong-a Pharmaceutical Research Laboratory, Yongin, Republic of Korea
| | - Yie-Hyuk Kwon
- Dong-a Pharmaceutical Research Laboratory, Yongin, Republic of Korea
| | - Joon-Ho Jun
- Dong-a Pharmaceutical Research Laboratory, Yongin, Republic of Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sunkyunkwan University, Suwon, Republic of Korea
| | - Chung-Woong Park
- Department of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
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Abstract
We investigated renal outcome of kidney-transplantation in 19 Korean recipients with biopsy-proven lupus nephritis and compared it with 18 Korean age- and gender-matched recipients without lupus nephritis who were diagnosed with end-stage renal disease caused by renal diseases other than lupus nephritis in a single centre. We reviewed histological findings of kidneys and calculated cumulative dose of immunosuppressive agents. We assessed renal flare of systemic lupus erythematosus, recurrence of lupus nephritis and graft failure as prognosis. The mean age of recipients with lupus nephritis was 43.5 years and all patients were female. Six patients had class III, 10 had class IV and three had class V. There were no meaningful differences in demographic data, renal replacement modality, cumulative doses of immunosuppressants and prognosis between recipients with and without lupus nephritis. Eight patients experienced renal flare of systemic lupus erythematosus, but there were no cases of recurrence of lupus nephritis or graft failure in recipients with lupus nephritis. Kidney-recipients with class IV lupus nephritis exhibited a lower cumulative renal flare of systemic lupus erythematosus free survival rate than those with class III lupus nephritis. In conclusion, renal outcome of kidney-transplantation in patients with lupus nephritis is similar to that in those without lupus nephritis, and class IV was associated with renal flare of systemic lupus erythematosus.
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Affiliation(s)
- E S Park
- Division of Rheumatology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S S Ahn
- Division of Rheumatology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S M Jung
- Division of Rheumatology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J J Song
- Division of Rheumatology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y-B Park
- Division of Rheumatology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S-W Lee
- Division of Rheumatology, Yonsei University College of Medicine, Seoul, Republic of Korea
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Kim SH, Hwang KM, Cho CH, Nguyen TT, Seok SH, Hwang KM, Kim JY, Park CW, Rhee YS, Park ES. Application of continuous twin screw granulation for the metformin hydrochloride extended release formulation. Int J Pharm 2017; 529:410-422. [PMID: 28705620 DOI: 10.1016/j.ijpharm.2017.07.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 06/17/2017] [Accepted: 07/07/2017] [Indexed: 11/17/2022]
Abstract
This study focuses on evaluating the potential of transferring from a batch process to continuous process for manufacturing of the extended release formulation. Metformin hydrochloride (HCl) was used in the model formulation which was intended to contain the high amount of hydrophilic drug. The effects of barrel temperature, binder type, powder feed rate, and screw speed on granule properties (size and strength) and torque value in twin screw granulation were investigated. Due to the high content of hydrophilic model drug, the granules prepared at a higher temperature with HPMC binding solution had the narrower size distribution and greater strength than the granules prepared with distilled water as a binding solution. After continuous drying and milling steps, the granules (continuous process) satisfied the fundamental purpose of granulation with size and flowability, despite different shape compared with the granules (batch process). Furthermore, there were no significant differences between two granulation processes in tablet properties, such as tablet hardness and in vitro release. The considerations and strategies used in this study to transfer from a batch to continuous process can be applied to other existing formulations based on high shear granulation to enable rapid process transfer in the pharmaceutical industry.
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Affiliation(s)
- Su-Hyeon Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Min Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Su Hyun Seok
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun 55338, Republic of Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju 19421, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Seo JW, Hwang KM, Lee SH, Kim DW, Park ES. Preparation and characterization of adefovir dipivoxil-stearic acid cocrystal with enhanced physicochemical properties. Pharm Dev Technol 2017; 23:890-899. [PMID: 28535125 DOI: 10.1080/10837450.2017.1334664] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The objectives of this study were to prepare cocrystal composed of adefovir dipivoxil (AD) and stearic acid (SA) and to investigate the enhanced properties of the cocrystal. The cocrystal was prepared by antisolvent precipitation and characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRPD), and differential scanning calorimetry (DSC). The enhanced properties were evaluated by dissolution testing, permeability studies, and powder rheology analysis. The AD raw material has a cuboid-like crystal and the cocrystal has a needle shape. In the FT-IR study, there were bathochromic shifts caused by the hydrogen bonding. The melting point of the cocrystal was 52.9 °C, which was lower than that of AD. The XRPD pattern also had distinct differences, supporting the formation of a new crystalline form. The cocrystal showed changes in the lattice energy and the solvation strength, which caused an enhanced dissolution. The permeability was increased due to the SA, which acts as a P-gp inhibitor. The tabletability was enhanced due to the altered crystal habit. In conclusion, cocrystal containing AD and SA was successfully prepared, presenting advantages such as enhanced solubility, tabletability, and permeability. The use of the cocrystal is a desirable approach for the improved physicochemical properties.
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Affiliation(s)
- Jeong-Woong Seo
- a School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Kyu-Min Hwang
- a School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
| | - Sung-Hoon Lee
- b Department of Pharmaceutical Engineering , Cheongju University , Cheongju , Republic of Korea
| | - Dong-Wook Kim
- b Department of Pharmaceutical Engineering , Cheongju University , Cheongju , Republic of Korea
| | - Eun-Seok Park
- a School of Pharmacy , Sungkyunkwan University , Suwon , Republic of Korea
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Kim SH, Min JH, Hong EP, Kim DW, Park ES. A simplified stability assessment for selection of a suitable package for microporous osmotic tablets. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hwang KM, Cho CH, Tung NT, Kim JY, Rhee YS, Park ES. Release kinetics of highly porous floating tablets containing cilostazol. Eur J Pharm Biopharm 2017; 115:39-51. [PMID: 28219750 DOI: 10.1016/j.ejpb.2017.01.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 12/15/2016] [Accepted: 01/29/2017] [Indexed: 10/20/2022]
Abstract
This study focuses on developing a highly porous floating tablet containing cilostazol. The underlying release mechanism of cilostazol from porous and floating tablets in dissolution media containing surfactants was investigated. The tablets were prepared by compressing granules and excipients with a sublimating agent, followed by sublimation under vacuum. The volatile material for the sublimating agent was chosen based on its flow properties using conventional methods as well as the twisted blade method. Resultant tablets could float immediately and had significantly higher tensile strengths than conventional tablets of similar porosities, holding a promising potential for increasing gastroretentive properties. Fitting the release profiles to the Korsmeyer-Peppas equation indicated Super Case II, Case II and non-Fickian kinetics, which implied that the release was affected by both floating behavior and matrix erosion. Abrupt changes in release kinetic parameters and erosional behaviors were found between the tablets containing different amounts of HPMC, indicating the existence of an excipient percolation threshold. Neither the surfactant in the media nor the porosity affected the dominant release mechanism, which was matrix erosion. Understanding the dominant release mechanism and percolation threshold allows for tuning the formulation to obtain various release profiles.
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Affiliation(s)
- Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Nguyen-Thach Tung
- Department of Pharmaceutics, Hanoi University of Pharmacy, 13-15 Le Thanh Tong, Hoan Kiem, Ha Noi, Viet Nam
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun 55338, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Lee HJ, Kim JY, Park SH, Rhee YS, Park CW, Park ES. Controlled-release oral dosage forms containing nimodipine solid dispersion and hydrophilic carriers. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2016.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Seok SH, Kang SY, Seo JW, Kim SH, Hwang KM, Park ES. Formulation of Nanoparticle Containing Everolimus Using Microfluidization and Freeze-Drying. Chem Pharm Bull (Tokyo) 2017; 64:1445-1449. [PMID: 27725499 DOI: 10.1248/cpb.c16-00049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aims of this study were to improve in vitro dissolution property of poorly water-soluble everolimus (EVR) for enhanced bioavailability without using organic solvents and characterize the effects of microfluidization and freeze-drying on physicochemical properties of EVR nanosuspension and nanoparticle, respectively. EVR nanosuspension was prepared using microfluidization with various types and concentrations of stabilizers. After that, it was solidified into nanoparticle using freeze-drying with various concentrations of xylitol, a cryoprotectant. The particle size, zeta potential, physical stability, and chemical stability of EVR nanosuspension and nanoparticle were measured. In vitro release of EVR nanoparticle was also measured and compared with that of physical mixture. Zero point five percent (w/w) poloxamer 407 (P407) was chosen as the stabilizer considering particle size, zeta potential, and yield of EVR nanosuspension. Freeze-drying with 1% (w/w) xylitol improved both physical and chemical stability of EVR nanoparticle. In vitro release test showed improved dissolution property compared to that of physical mixture, implying enhanced bioavailability.
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Lee HJ, Kang JH, Lee HG, Kim DW, Rhee YS, Kim JY, Park ES, Park CW. Preparation and physicochemical characterization of spray-dried and jet-milled microparticles containing bosentan hydrate for dry powder inhalation aerosols. Drug Des Devel Ther 2016; 10:4017-4030. [PMID: 28008226 PMCID: PMC5167478 DOI: 10.2147/dddt.s120356] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The objectives of this study were to prepare bosentan hydrate (BST) microparticles as dry powder inhalations (DPIs) via spray drying and jet milling under various parameters, to comprehensively characterize the physicochemical properties of the BST hydrate microparticles, and to evaluate the aerosol dispersion performance and dissolution behavior as DPIs. The BST microparticles were successfully prepared for DPIs by spray drying from feeding solution concentrations of 1%, 3%, and 5% (w/v) and by jet milling at grinding pressures of 2, 3, and 4 MPa. The physicochemical properties of the spray-dried (SD) and jet-milled (JM) microparticles were determined via scanning electron microscopy, atomic force microscopy, dynamic light scattering particle size analysis, Karl Fischer titration, surface analysis, pycnometry, differential scanning calorimetry, powder X-ray diffraction, and Fourier transform infrared spectroscopy. The in vitro aerosol dispersion performance and drug dissolution behavior were evaluated using an Anderson cascade impactor and a Franz diffusion cell, respectively. The JM microparticles exhibited an irregular corrugated surface and a crystalline solid state, while the SD microparticles were spherical with a smooth surface and an amorphous solid state. Thus, the in vitro aerosol dispersion performance and dissolution behavior as DPIs were considerably different due to the differences in the physicochemical properties of the SD and JM microparticles. In particular, the highest grinding pressures under jet milling exhibited excellent aerosol dispersion performance with statistically higher values of 56.8%±2.0% of respirable fraction and 33.8%±2.3% of fine particle fraction and lower mass median aerodynamic diameter of 5.0±0.3 μm than the others (P<0.05, analysis of variance/Tukey). The drug dissolution mechanism was also affected by the physicochemical properties that determine the dissolution kinetics of the SD and JM microparticles, which were well fitted into the Higuchi and zero-order models, respectively.
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Affiliation(s)
- Hyo-Jung Lee
- College of Pharmacy, Chungbuk National University
| | - Ji-Hyun Kang
- College of Pharmacy, Chungbuk National University
| | - Hong-Goo Lee
- College of Pharmacy, Chungbuk National University
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju
| | - Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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Hwang KM, Byun W, Cho CH, Park ES. Preparation and optimization of glyceryl behenate-based highly porous pellets containing cilostazol. Pharm Dev Technol 2016; 23:540-551. [DOI: 10.1080/10837450.2016.1245743] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Woojin Byun
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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Seo JW, Kim KJ, Kim SH, Hwang KM, Seok SH, Park ES. Effect of Process Parameters on Formation and Aggregation of Nanoparticles Prepared with a Shirasu Porous Glass Membrane. Chem Pharm Bull (Tokyo) 2016; 63:792-8. [PMID: 26423035 DOI: 10.1248/cpb.c15-00297] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The objectives of this study were to prepare itraconazole (ITZ) nanoparticles using a Shirasu porous glass (SPG) membrane and to characterize the effects of diverse preparation parameters on the physical stability of nanoparticles. SPG membrane technology was used for the antisolvent precipitation method. The preparation of nanoparticles was carried out over a wide range of continuous-phase factors (type of surfactant, surfactant concentration), dispersed-phase factors (solvent type, solvent volume used to dissolve ITZ), and technical factors (pressure, membrane pore size, stirring speed in the continuous phase, temperature). Improved physical stability of nanoparticles was observed when surfactant with a lower molecular weight and higher hydrophilic segment ratio was used. The water miscibility of the solvent also had an effect on the physical stability. N,N-Dimethylacetamide contributed to creating a well-rounded shape and narrow size distribution due to high miscibility. Concentration of the surfactant and solvent volume used for dissolving ITZ were related to instability of nanoparticles, resulting from depletion attraction and Ostwald ripening. In addition to these factors, technical factors changed the environment surrounding ITZ nanoparticles, such as the physicochemical equilibrium between surfactant and ITZ nanoparticles. Therefore, the appropriate continuous-phase factors, dispersed-phase factors, and technical factors should be maintained for stabilizing ITZ nanoparticles.
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Kim SH, Oh TO, Kim JY, Park CW, Baek SH, Park ES. Effects of metal- and fiber-reinforced composite root canal posts on flexural properties. Dent Mater J 2016; 35:138-46. [PMID: 26830835 DOI: 10.4012/dmj.2015-193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to observe the effects of different test conditions on the flexural properties of root canal post. Metal- and fiber-reinforced composite root canal posts of various diameters were measured to determine flexural properties using a threepoint bending test at different conditions. In this study, the span length/post diameter ratio of root canal posts varied from 3.0 to 10.0. Multiple regression models for maximum load as a dependent variable were statistically significant. The models for flexural properties as dependent variables were statistically significant, but linear regression models could not be fitted to data sets. At a low span length/post diameter ratio, the flexural properties were distorted by occurrence of shear stress in short samples. It was impossible to obtain high span length/post diameter ratio with root canal posts. The addition of parameters or coefficients is necessary to appropriately represent the flexural properties of root canal posts.
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Hong EP, Kim JY, Kim SH, Hwang KM, Park CW, Lee HJ, Kim DW, Weon KY, Jeong SY, Park ES. Formulation and Evaluation of a Self-microemulsifying Drug Delivery System Containing Bortezomib. Chem Pharm Bull (Tokyo) 2016; 64:1108-17. [DOI: 10.1248/cpb.c16-00035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Eon-Pyo Hong
- College of Pharmacy, Kyung Hee University
- R&D Center, Handok Inc
| | | | | | | | | | - Hyo-Jung Lee
- College of Pharmacy, Chungbuk National University
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University
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Thao LQ, Byeon HJ, Lee C, Lee S, Lee ES, Choi HG, Park ES, Youn YS. Pharmaceutical potential of tacrolimus-loaded albumin nanoparticles having targetability to rheumatoid arthritis tissues. Int J Pharm 2016; 497:268-76. [DOI: 10.1016/j.ijpharm.2015.12.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/10/2015] [Accepted: 12/03/2015] [Indexed: 01/05/2023]
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Back OC, Jang HS, Lee JS, Kim DE, Lee Y, Park ES, Kim IS. The Protective Effect of INH2BP, a Novel PARP Inhibitor 5-Iodo-6-Amino-1,2-Benzopyrone, Against Hydrogen Peroxide-Induced Apoptosis Through ERK and p38 MAPK in H9c2 Cells. Pharmacology 2015; 96:259-70. [PMID: 26550832 DOI: 10.1159/000439572] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 08/20/2015] [Indexed: 11/19/2022]
Abstract
INH2BP (5-iodo-6-amino-1,2-benzopyrone), a poly-ADP ribose polymerase inhibitor, has been shown to possess anti-cancer, anti-viral, and anti-inflammation properties. The aim of this study was to investigate the protective effect of INH2BP against oxidative stress-induced apoptosis in H9c2 cardiomyoblast cells. While the treatment of H9c2 cardiomyoblasts cells with hydrogen peroxide (H2O2) caused a loss of cell viability and an increase in the number of apoptotic cells, INH2BP significantly protected the cells against H2O2-induced cell death without any cytotoxicity. Our data also shows that INH2BP significantly scavenged intracellular reactive oxygen species (ROS), and markedly enhanced the expression of antioxidant enzymes such as Mn-SOD (superoxide) and Cu/Zn-SOD, and heme oxygenase-1, which was accompanied by the concomitant activation of extracellular regulated kinase 1/2 (ERK1/2) and p38 mitogen-activated protein kinase (MAPK) phosphorylation in H9c2 cells. The effects of INH2BP on ERK1/2 and p38 MAPK phosphorylation were abrogated by PD98059, an ERK1/2 inhibitor, and SB203580, a p38 inhibitor. In addition, inhibition of ERK1/2 and p38 MAPK by these inhibitors significantly attenuated INH2BP-mediated H9c2 viability as well as cleaved caspases-3, Bax, and Bcl-2 activation. Taken together, these results demonstrate that INH2BP prevents H2O2-induced apoptosis in H9c2 cells by reducing the production of intracellular ROS, regulating apoptotic-related proteins, and the activation of the ERK1/2 and p38 MAPK.
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Affiliation(s)
- Oun-Cheol Back
- Department of Biomedical Laboratory Science, School of Medicine, Eulji University, Daejeon, Republic of Korea
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Shin HJ, Oh CT, Kwon TR, Beak HS, Joo YH, Kim JH, Lee CS, Lee JH, Kim BJ, Shin SS, Park ES. A novel adamantyl benzylbenzamide derivative, AP736, inhibits melanogenesis in B16F10 mouse melanoma cells via glycogen synthase kinase 3β phosphorylation. Int J Mol Med 2015; 36:1353-60. [PMID: 26398893 DOI: 10.3892/ijmm.2015.2348] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 08/20/2015] [Indexed: 11/06/2022] Open
Abstract
Recently, much effort has been made to develop effective dermatological depigmenting compounds. In this study, we investigated the novel candidate compound, AP736 (an adamantyl benzylbenzamide derivative), and its effects on melanogenesis in B16F10 melanoma cells, as well as the mechanisms involved. AP736 has been reported to exert anti-melanogenic effects in melanocytes in vitro and in artificial skin equivalents through the inhibition of key melanogenic enzymes and the suppression of the cAMP-protein kinase A (PKA)-cAMP response element‑binding protein (CREB) signaling pathway. Thus, we examined another pathway of melanogenesis involving the effects of AP736 on the glycogen synthesis kinase 3β (GSK3β) pathway. Melanin content and tyrosinase activity were measured using a spectrophotometer after the cells were treated with AP736. The AP736-induced activation of signaling pathways was examined by western blot analysis. We confirmed that AP736 decreased melanin production in a dose-dependent manner; however, it did not directly inhibit tyrosinase, the rate-limiting melanogenic enzyme. The expression of microphthalmia-associated transcription factor, tyrosinase, and related signal transduction pathways was also investigated. The Wnt signaling pathway is deeply involved in melanogenesis; therefore, phosphorylation by GSK3β was assessed following treatment with AP736. AP736 induced GSK3β phosphorylation (inactivation), but it did not alter the level of β-catenin. Furthermore, the expression of α-melanocyte-stimulating hormone-induced tyrosinase was downregulated by AP736. Our data suggest that AP736 exerts hypopigmentary effects through the downregulation of tyrosinase via GSK3β phosphorylation.
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Affiliation(s)
- Hong-Ju Shin
- Medical Beauty Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - Chang Taek Oh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Tae-Rin Kwon
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Heung Soo Beak
- Skin Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - Yung Hyup Joo
- Skin Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - Jeong-Hwan Kim
- Medical Beauty Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - Chang Seok Lee
- Medical Beauty Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - John Hwan Lee
- Skin Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Song Seok Shin
- Skin Research Institute, AmorePacific R&D Center, Yongin 446-729, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
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Kim WJ, Lee E, Kim KR, Namkoong K, Park ES, Rha DW. Progress of PTSD symptoms following birth: a prospective study in mothers of high-risk infants. J Perinatol 2015; 35:575-9. [PMID: 25856762 DOI: 10.1038/jp.2015.9] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 01/03/2015] [Accepted: 01/20/2015] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To understand how postpartum posttraumatic stress disorder (PTSD) symptoms in mothers of high-risk infants progress and identify what factors predict postpartum PTSD. STUDY DESIGN We prospectively obtained self-reported psychological data from neonatal intensive care unit discharged infants' mothers (NICU mothers) at the infants' corrected ages of 1 (T0), 3 (T1) and 12 months (T2) and mothers of healthy infants (controls). Maternal sociodemographic and infant-related factors were also investigated. RESULT PTSD was present in 25 and 9% of NICU mothers and controls, respectively. We identified four PTSD patterns: none, persistent, delayed and recovered. The postpartum PTSD course was associated with trait anxiety. Whether the infant was the first child who predicted PTSD at year 1 (adjusted odds ratio=7.62, 95% confidence interval=1.07 to 54.52). CONCLUSION Mothers of high-risk infants can develop early or late PTSD, and its course can be influenced by factors besides medical status. We therefore recommend regular screenings of postpartum PTSD.
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Affiliation(s)
- W J Kim
- Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - E Lee
- Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - K R Kim
- Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - K Namkoong
- Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - E S Park
- Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - D-w Rha
- Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, South Korea
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Shanmugam S, Im HT, Sohn YT, Kim YI, Park JH, Park ES, Woo JS. Enhanced oral bioavailability of paclitaxel by solid dispersion granulation. Drug Dev Ind Pharm 2015; 41:1864-76. [DOI: 10.3109/03639045.2015.1018275] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kim JY, Jun JH, Kim SJ, Hwang KM, Choi SR, Han SD, Son MW, Park ES. Wound healing efficacy of a chitosan-based film-forming gel containing tyrothricin in various rat wound models. Arch Pharm Res 2015; 38:229-38. [PMID: 24715576 DOI: 10.1007/s12272-014-0368-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 03/12/2014] [Indexed: 11/25/2022]
Abstract
The objective of this study was to evaluate the healing effects of a chitosan-based, film-forming gel containing tyrothricin (TYR) in various rat wound models, including burn, abrasion, incision, and excision models. After solidification, the chitosan film layer successfully covered and protected a variety of wounds. Wound size was measured at predetermined timepoints after wound induction, and the effects of the film-forming gel were compared with negative (no treatment) and positive control groups (commercially available sodium fusidate ointment and TYR gel). In burn, abrasion and excision wound models, the film-forming gel enabled significantly better healing from 1 to 6 days after wound induction, compared with the negative control. Importantly, the film-forming gel also enabled significantly better healing compared with the positive control treatments. In the incision wound model, the breaking strength of wound strips from the group treated with the film-forming gel was significantly increased compared with both the negative and positive control groups. Histological studies revealed advanced granulation tissue formation and epithelialization in wounds treated with the film-forming gel. We hypothesize that the superior healing effects of the film-forming gel are due to wound occlusion, conferred by the chitosan film. Our data suggest that this film-forming gel may be useful in treating various wounds, including burn, abrasion, incision and excision wounds.
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Affiliation(s)
- Ju-Young Kim
- School of Pharmacy, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Republic of Korea
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Kim JY, Lee SH, Park CW, Rhee YS, Kim DW, Park J, Lee M, Seo JW, Park ES. Design and in vivo evaluation of oxycodone once-a-day controlled-release tablets. Drug Des Devel Ther 2015; 9:695-706. [PMID: 25678774 PMCID: PMC4322610 DOI: 10.2147/dddt.s77356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of present study was to design oxycodone once-a-day controlled-release (CR) tablets and to perform in vitro/in vivo characterizations. Release profiles to achieve desired plasma concentration versus time curves were established by using simulation software and reported pharmacokinetic parameters of the drug. Hydroxypropyl methylcellulose (HPMC) 100,000 mPa·s was used as a release modifier because the polymer was found to be resistant to changes in conditions of the release study, including rotation speed of paddle and ion strength. The burst release of the drug from the CR tablets could be suppressed by applying an additional HPMC layer as a physical barrier. Finally, the oxycodone once-a-day tablet was comprised of two layers, an inert HPMC layer and a CR layer containing drug and HPMC. Commercial products, either 10 mg bis in die (bid [twice a day]) or once-a-day CR tablets (20 mg) were administered to healthy volunteers, and calculated pharmacokinetic parameters indicated bioequivalence of the two different treatments. The findings of the present study emphasize the potential of oxycodone once-a-day CR tablets for improved patient compliance, safety, and efficacy, which could help researchers to develop new CR dosage forms of oxycodone.
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Affiliation(s)
- Ju-Young Kim
- College of Pharmacy, Woosuk University, Wanju-gun, Republic of Korea
| | - Sung-Hoon Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea ; GL Pharmtech, Seongnam, Republic of Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju, Republic of Korea
| | | | | | - Jeong-Woong Seo
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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