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Uchiyama H, Minoura K, Yamada E, Ando K, Yamauchi R, Nakanishi A, Tandia M, Kadota K, Tozuka Y. Solubilization mechanism of α-glycosylated naringin based on self-assembled nanostructures and its application to skin formulation. Eur J Pharm Biopharm 2024; 200:114316. [PMID: 38754525 DOI: 10.1016/j.ejpb.2024.114316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/18/2024]
Abstract
We previously reported that α-glycosylated naringin (naringin-G), synthesized by enzyme-catalyzed transglycosylation, can enhance the solubility of poorly water-soluble compounds without surface-active property. However, the solubilization mechanism has not been fully elucidated. In this study, the solubilization mechanism of naringin-G was investigated using nuclear magnetic resonance (NMR) spectroscopy, and its application in skin formulations was further investigated. 1H NMR and dynamic light scattering measurements at various concentrations confirmed the self-assembled nanostructures of naringin-G above a critical aggregation concentration of approximately 2.2 mg/mL. Two-dimensional 1H-1H nuclear Overhauser effect spectroscopy and solubility tests revealed that flavone with poor water solubility, could be solubilized in its self-assembled structure with a stoichiometric relationship with naringin-G. When naringin-G was included in the skin formulation, the permeated amount and permeability coefficient (Papp) of flavones improved up to four times with increasing amounts of naringin-G. However, flavone solubilization by adding an excessive amount of naringin-G resulted in a decreased permeated amount and Papp of flavones, indicating the interplay between the apparent solubility and skin permeability of flavones. Naringin-G, which forms a nanoaggregate structure without exhibiting surface-active properties, has the potential to enhance the solubility and skin permeation of poorly water-soluble compounds.
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Affiliation(s)
- Hiromasa Uchiyama
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Katsuhiko Minoura
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Erina Yamada
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Kenta Ando
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Ryoji Yamauchi
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Akihito Nakanishi
- Toyo Sugar Refining Co., Ltd., 18-20 Koami-Cho, Nihonbashi, Chuo-ku, Tokyo 103-0016, Japan
| | - Mahamadou Tandia
- Toyo Sugar Refining Co., Ltd., 18-20 Koami-Cho, Nihonbashi, Chuo-ku, Tokyo 103-0016, Japan
| | - Kazunori Kadota
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Yuichi Tozuka
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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Tian Y, Xu W, Guang C, Zhang W, Mu W. Glycosylation of flavonoids by sucrose- and starch-utilizing glycoside hydrolases: A practical approach to enhance glycodiversification. Crit Rev Food Sci Nutr 2024; 64:7408-7425. [PMID: 36876518 DOI: 10.1080/10408398.2023.2185201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Flavonoids are ubiquitous and diverse in plants and inseparable from the human diet. However, in terms of human health, their further research and application in functional food and pharmaceutical industries are hindered by their low water solubility. Therefore, flavonoid glycosylation has recently attracted research attention because it can modulate the physicochemical and biochemical properties of flavonoids. This review represents a comprehensive overview of the O-glycosylation of flavonoids catalyzed by sucrose- and starch-utilizing glycoside hydrolases (GHs). The characteristics of this feasible biosynthesis approach are systematically summarized, including catalytic mechanism, specificity, reaction conditions, and yields of the enzymatic reaction, as well as the physicochemical properties and bioactivities of the product flavonoid glycosides. The cheap glycosyl donor substrates and high yields undoubtedly make it a practical flavonoid modification approach to enhance glycodiversification.
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Affiliation(s)
- Yuqing Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wei Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Cuie Guang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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Kadota K, Kämäräinen T, Sakuma F, Ueda K, Higashi K, Moribe K, Uchiyama H, Minoura K, Tozuka Y. Unveiling the flavone-solubilizing effects of α-glucosyl rutin and hesperidin: probing structural differences through NMR and SAXS analyses. Food Funct 2023; 14:10493-10505. [PMID: 37938858 DOI: 10.1039/d3fo03261b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Flavonoids often exhibit broad bioactivity but low solubility and bioavailability, limiting their practical applications. The transglycosylated materials α-glucosyl rutin (Rutin-G) and α-glucosyl hesperidin (Hsp-G) are known to enhance the dissolution of hydrophobic compounds, such as flavonoids and other polyphenols. In this study, the effects of these materials on flavone solubilization were investigated by probing their interactions with flavone in aqueous solutions. Rutin-G and Hsp-G prepared via solvent evaporation and spray-drying methods were evaluated for their ability to dissolve flavones. Rutin-G had a stronger flavone-solubilizing effect than Hsp-G in both types of composite particles. The origin of this difference in behavior was elucidated by small-angle X-ray scattering (SAXS) and nuclear magnetic resonance analyses. The different self-association structures of Rutin-G and Hsp-G were supported by SAXS analysis, which proved that Rutin-G formed polydisperse aggregates, whereas Hsp-G formed core-shell micelles. The observation of nuclear Overhauser effects (NOEs) between flavone and α-glucosyl materials suggested the existence of intermolecular hydrophobic interactions. However, flavone interacted with different regions of Rutin-G and Hsp-G. In particular, NOE correlations were observed between the protons of flavone and the α-glucosyl protons of Rutin-G. The different molecular association states of Rutin-G or Hsp-G could be responsible for their different effects on the solubility of flavone. A better understanding of the mechanism of flavone solubility enhancement via association with α-glucosyl materials would permit the application of α-glucosyl materials to the solubilization of other hydrophobic compounds including polyphenols such as flavonoids.
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Affiliation(s)
- Kazunori Kadota
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Tero Kämäräinen
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Fumie Sakuma
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kenjirou Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kunikazu Moribe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Hiromasa Uchiyama
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Katsuhiko Minoura
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Yuichi Tozuka
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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Zhang J, Zhang Y, Wang H, Chen W, Lu A, Li H, Kang L, Wu C. Solubilisation and Enhanced Oral Absorption of Curcumin Using a Natural Non-Nutritive Sweetener Mogroside V. Int J Nanomedicine 2023; 18:1031-1045. [PMID: 36855540 PMCID: PMC9968502 DOI: 10.2147/ijn.s395266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/02/2023] [Indexed: 02/25/2023] Open
Abstract
Background Curcumin (CUR) is a functional ingredient from the spice turmeric. It has attracted considerable attention recently, owing to its diverse biological activities. However, curcumin has low water solubility, which limited its applications. Some sugar molecules were found to be able to solubilise poorly water-soluble compounds by forming micelles in aqueous solutions. Purpose To improve the water solubility and oral absorption of CUR, using a non-nutritive natural sweetener, namely, Mogroside V (Mog-V). Methods A solid dispersion of CUR in Mog-V was prepared using a solvent evaporation method. The solid dispersion was characterised by using X-ray diffraction and differential scanning calorimetry. The solid dispersion can dissolve in water to form micelles with a diameter of ~160 nm, which were characterised by using dynamic light scattering. To find out the mechanism of solubilisation, the aggregation behaviour of Mog-V molecules in aqueous solution was investigated using nuclear magnetic resonance spectroscopy. Finally, oral absorption of CUR in the solid dispersion was evaluated using a rodent model. Results A solid dispersion was formed in a ratio of 1 CUR to 10 Mog-V by weight. Upon dissolution into water, CUR laden micelles formed via self-assembly of Mog-V molecules, which increased the solubility of CUR by nearly 6000 times compared with pure CUR crystals. In rats, the solid dispersion increased the oral absorption of CUR by 29 folds, compared with CUR crystals. In terms of solubilisation mechanism, it was found that Mog-V self-assembled into micelles with a core-shell structure and CUR molecules were incorporated into the hydrophobic core of the Mog-V micelles. Conclusion Mog-V can form a solid dispersion with CUR. Upon dissolution in water, the Mog-V in the solid dispersion can self-assemble into micelles, which solubilise CUR and increase its oral absorption.
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Affiliation(s)
- Junying Zhang
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Yiwen Zhang
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Hufang Wang
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Wenlin Chen
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Aiyu Lu
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Hailiang Li
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Lifeng Kang
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Pharmacy and Bank Building A15, Camperdown, Australia,Correspondence: Lifeng Kang, Email
| | - Chunyong Wu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, People’s Republic of China,Chunyong Wu, Email
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Uchiyama H, Kadota K, Tozuka Y. A review of transglycosylated compounds as food additives to enhance the solubility and oral absorption of hydrophobic compounds in nutraceuticals and pharmaceuticals. Crit Rev Food Sci Nutr 2022; 63:11226-11243. [PMID: 35757865 DOI: 10.1080/10408398.2022.2092056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Transglycosylation has been used to modify the physicochemical properties of original compounds. As a result, transglycosylated compounds can form molecular aggregates in size ranges of a few nanometers in an aqueous medium when their concentrations exceed a specific level. Incorporating these hydrophobic compounds has been observed to enhance the solubility of hydrophobic compounds into aggregate structures. Thus, this review introduces four transglycosylated compounds as food additives that can enhance the solubility and oral absorption of hydrophobic compounds. Here, transglycosylated hesperidin, transglycosylated rutin, transglycosylated naringin, and transglycosylated stevia are the focus as representative substances. Significantly, we observed that amorphous formations containing hydrophobic compounds with transglycosylated compounds improved solubility and oral absorption compared to untreated hydrophobic compounds. Moreover, combining transglycosylated compounds with hydrophilic polymers or surfactants enhanced the solubilizing effects on hydrophobic compounds. Furthermore, the enhanced solubility of hydrophobic compounds improved their oral absorption. Transglycosylated compounds also influenced nanoparticle preparation of hydrophobic compounds as a dispersant. This study demonstrated the benefits of transglycosylated compounds in developing supplements and nutraceuticals of hydrophobic compounds with poor aqueous solubility.
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Affiliation(s)
- Hiromasa Uchiyama
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Kazunori Kadota
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Yuichi Tozuka
- Department of Formulation Design and Pharmaceutical Technology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
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Ma X, Higashi K, Fukuzawa K, Ueda K, Kadota K, Tozuka Y, Yonemochi E, Moribe K. Computational approach to elucidate the formation and stabilization mechanism of amorphous formulation using molecular dynamics simulation and fragment molecular orbital calculation. Int J Pharm 2022; 615:121477. [PMID: 35051536 DOI: 10.1016/j.ijpharm.2022.121477] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/05/2022] [Accepted: 01/11/2022] [Indexed: 11/25/2022]
Abstract
α-Glycosyl rutin (Rutin-G) consists of a flavonol skeleton and sugar groups and is a promising additive for amorphous formulations. In our previous study, experimental approaches suggested an interaction between the model drug carbamazepine (CBZ) and flavonol skeleton of Rutin-G that stabilizes amorphous formulations. In the present study, the formation and stabilization mechanisms of CBZ/Rutin-G amorphous formulation were investigated using a computational approach. The CBZ/Rutin-G amorphous formulation was obtained via molecular dynamics (MD) simulation, which mimicked the melt-quenching method. Root mean square deviation analysis revealed that the translational motion of CBZ during the cooling process was suppressed by adding Rutin-G. Monitoring the atomic distance during the cooling process revealed that hydrogen bonds via carboxamide oxygen of CBZ with hydroxyl hydrogen of Rutin-G were preferentially formed with flavonol skeletons than sugar groups. The simulated amorphous formulation was then calculated using fragment molecular orbital (FMO) method. The quantitative evaluation of multiple interactions revealed that the hydrogen bond energy was higher in CBZ-sugar groups than in CBZ-flavonol skeleton, while the π-type of interaction energy was higher in CBZ-flavonol skeleton than in CBZ-sugar groups. The computational approach combining MD simulation and FMO calculation provides information on various interactions that are difficult to detect using experimental approaches, which helps understand the formation and stabilization mechanism of amorphous formulations.
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Affiliation(s)
- Xiaohan Ma
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kenjirou Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kaori Fukuzawa
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41, Ebara, Shinagawa, Tokyo 142-8501, Japan
| | - Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kazunori Kadota
- Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Yuichi Tozuka
- Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Etsuo Yonemochi
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41, Ebara, Shinagawa, Tokyo 142-8501, Japan
| | - Kunikazu Moribe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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González-Alfonso JL, Poveda A, Arribas M, Hirose Y, Fernández-Lobato M, Olmo Ballesteros A, Jiménez-Barbero J, Plou FJ. Polyglucosylation of Rutin Catalyzed by Cyclodextrin Glucanotransferase from Geobacillus sp.: Optimization and Chemical Characterization of Products. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Ana Poveda
- Center for Cooperative Research in Biosciences, CIC bioGUNE, Basque Research & Technology Alliance, BRTA, 48160 Derio, Biscay, Spain
| | - Miguel Arribas
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | | | - María Fernández-Lobato
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | | | - Jesús Jiménez-Barbero
- Center for Cooperative Research in Biosciences, CIC bioGUNE, Basque Research & Technology Alliance, BRTA, 48160 Derio, Biscay, Spain
- Ikerbasque, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Francisco J. Plou
- Instituto de Catálisis y Petroleoquímica, CSIC, Marie Curie, 2, 28049 Madrid, Spain
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Higashi K. [Solid State NMR Investigation for Molecular States of Specialized Formulation to Improve the Water Solubility of Poorly Water-soluble Drugs]. YAKUGAKU ZASSHI 2021; 141:1063-1069. [PMID: 34471007 DOI: 10.1248/yakushi.21-00124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
70-90% of recently developed new drug candidates are poorly soluble in water, which creates a series of thorny challenges in developing its oral dosage forms, resulting in low bioavailability. In pre-formulation study, various specialized formulations have been developed to improve drug solubility. Intermolecular interactions between drug and excipients in the formulations can modify the drug state and achieve the improvement of drug solubility. Therefore, the understanding of intermolecular interaction is essential to design formulations with higher quality and to assure the quality as a pharmaceutical product. Solid-state NMR has attracted much attention as a promising method to evaluate the molecular state of a drug and the interaction between a drug and excipient in its formulation. I have applied solid-state NMR and its characteristic technique, namely magic-angle spinning (MAS), for various specialized formulations including amorphous solid dispersion, supersaturated solution, drug-loaded organic nanotube, and drug nanosuspension. The intermolecular interactions of drug and excipient in amorphous solid dispersion have been identified by 13C and 15N solid-state NMR. High-resolution MAS determined the interaction modes of drug and excipient in a supersaturated solution. The two-step dissolution profile of drug from organic nanotube was understood, based on the molecular states revealed by the combination of various solid-state NMR techniques. A suspended-state NMR clarified the nanostructure of drug nanoparticles dispersed in water. It is expected that more qualified pharmaceutical formulations with improved drug solubility can be designed based on the remarkable development of recent solid-state NMR technology.
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Stabilization mechanism of amorphous carbamazepine by transglycosylated rutin, a non-polymeric amorphous additive with a high glass transition temperature. Int J Pharm 2021; 600:120491. [PMID: 33744450 DOI: 10.1016/j.ijpharm.2021.120491] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/24/2021] [Accepted: 03/10/2021] [Indexed: 01/08/2023]
Abstract
α-Glycosyl rutin (Rutin-G), composed of a flavonol skeleton and sugar groups, is a promising non-polymeric additive for stabilizing amorphous drug formulations. In this study, the mechanism of the stabilization of the amorphous state of carbamazepine (CBZ) by Rutin-G was investigated. In comparison with hypromellose (HPMC), which is commonly used as a crystallization inhibitor for amorphous drugs, Rutin-G significantly stabilized amorphous CBZ. Moreover, the dissolution rate and the resultant supersaturation level of CBZ were significantly improved in the CBZ/Rutin-G spray-dried samples (SPDs) owing to the rapid dissolution property of Rutin-G. Differential scanning calorimetry measurement demonstrated a high glass transition temperature (Tg) of 186.4°C corresponding to Rutin-G. The CBZ/Rutin-G SPDs with CBZ weight ratios up to 80% showed single glass transitions, indicating the homogeneity of CBZ and Rutin-G. A solid-state NMR experiment using 13C- and 15N-labeled CBZ demonstrated the interaction between the flavonol skeleton of Rutin-G and the amide group of CBZ. A 1H-13C two-dimensional heteronuclear correlation NMR experiment and quantum mechanical calculations confirmed the presence of a possible hydrogen bond between the amino proton in CBZ and the carbonyl oxygen in the flavonol skeleton of Rutin-G. This specific hydrogen bond could contribute to the strong interaction between CBZ and Rutin-G, resulting in the high stability of amorphous CBZ in the CBZ/Rutin-G SPD. Hence, Rutin-G, a non-polymeric amorphous additive with high Tg, high miscibility with drugs, and rapid and pH-independent dissolution properties could be useful in the preparation of amorphous formulations.
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Wang L, Tan A, Zhao S, Zhang J, Dong D, Chen Y, Liang H, Ma X, Lv G. Preparation and optimization of a resveratrol solid dispersion to improve the physicochemical properties and oral bioavailability of resveratrol. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2020.1822861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Liyan Wang
- Department of Pharmacology, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Aiping Tan
- Department of Pharmacology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shan Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Jianbin Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Deshi Dong
- Department of Pharmacology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yanwei Chen
- Department of Pharmacology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hui Liang
- Department of Pharmacology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiaojun Ma
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Guojun Lv
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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Luo Y, Gong C, Wei M, Chen Y, Song T, Wu C, Mo L, Zhang J. Evaluation of Mogroside V as a Promising Carrier in Drug Delivery: Improving the Bioavailability and Liver Distribution of Silybin. AAPS PharmSciTech 2020; 21:123. [PMID: 32337654 DOI: 10.1208/s12249-020-01645-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 02/22/2020] [Indexed: 12/29/2022] Open
Abstract
The objective of this work was to investigate the capacity of mogroside V (MOG-V), a food additive, as a novel carrier to improve the bioavailability and liver distribution of silybin (SLY). Solid dispersion particles (SDPs) of SLY/MOG-V were prepared utilizing the solvent evaporation method. The physicochemical characterizations of SDPs were evaluated by using dynamic light scattering (DLS), differential scanning calorimetry (DSC), and powder X-ray diffraction (PXRD) measurements. DLS results demonstrated the formation of nanoparticles (206 nm) of SDPs in water. DSC and PXRD analysis revealed that SLY was in amorphous form or molecularly dispersed in SDPs. SDPs also exhibited a major increase in both dissolution rate and saturation solubility, as evidenced by a 1931-fold improvement (2201 μg/mL) in solubility compared with pure SLY (1.14 μg/mL). The pharmacokinetic study in rats showed that oral absorption of SLY/MOG-V SDPs was dramatically increased. The mean value of AUC until 12 h for SLY/MOG-V SDPs (27,481 ng·min/mL) was 24.5-fold higher than that of pure SLY (1122 ng·min/mL). In vivo tissue distribution experiment in mice confirmed that the major distribution tissue was changed from lungs to liver after SLY was loaded into MOG-V. In addition, even orally administrated to mice at a high dose (4.2 g/kg), MOG-V exhibited no undesirable effect on the plasma glucose concentrations. Thus, MOG-V may have the applicability to serve as an ideal excipient for solubilization or as a novel liver targeting carrier for the delivery of SLY.
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Affiliation(s)
- Yuqin Luo
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Chunyan Gong
- Department of Pharmacy, Hospital for Skin Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, Jiangsu, China
| | - Mingmin Wei
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Yi Chen
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Ting Song
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Chunyong Wu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Liying Mo
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China. .,, Nanjing, People's Republic of China.
| | - Junying Zhang
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China. .,, Nanjing, People's Republic of China.
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Uchiyama H, Kadota K, Nakanishi A, Tandia M, Tozuka Y. A simple blending with α-glycosylated naringin produces enhanced solubility and absorption of pranlukast hemihydrate. Int J Pharm 2019; 567:118490. [DOI: 10.1016/j.ijpharm.2019.118490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/20/2019] [Accepted: 06/30/2019] [Indexed: 10/26/2022]
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Semba K, Kadota K, Arima H, Nakanishi A, Tandia M, Uchiyama H, Sugiyama K, Tozuka Y. Improved water dispersibility and photostability in folic acid nanoparticles with transglycosylated naringin using combined processes of wet-milling and freeze-drying. Food Res Int 2019; 121:108-116. [PMID: 31108730 DOI: 10.1016/j.foodres.2019.03.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 03/11/2019] [Accepted: 03/14/2019] [Indexed: 11/25/2022]
Abstract
We successfully prepared folic acid (FA) nanoparticles with excellent dispersibility and photostability using a combination of bead milling and freeze-drying with transglycosylated naringin (Naringin-G), a newly developed transglycosylated food additive. Poly-vinyl pyrrolidon (PVP) was used for comparison with Naringin-G. Water dispersibility and photostability of the freeze-dried formulations were assessed. The dispersibility and physicochemical properties of nanoparticle formulations were evaluated using dynamic light scattering, powder X-ray diffraction (PXRD), and small-angle X-ray scattering (SAXS). Results indicated that the median particle size of FA in the slurry bead milled with Naringin-G decreased notably with time and fell below 100 nm after milling for 300 min. Further, FA nanoparticles with Naringin-G were stable without aggregation following re-dispersion of freeze-dried FA formulations in water. Contrarily, the addition of PVP did not prevent the aggregation of FA nanoparticles following re-dispersion of freeze-dried FA formulations. Solid structures of freeze-dried FA formulations with Naringin-G or PVP were assessed using PXRD and SAXS. PXRD patterns of all freeze-dried formulations highlighted broadening and weakening of peaks, indicating a decrease in FA crystallinity following bead milling, regardless of the additive concentration of Naringin-G and PVP. The scattering intensity profiles of FA formulations with PVP dramatically decreased after milling, whereas FA formulations with Naringin-G did not exhibit changes in SAXS patterns. FA formulations with Naringin-G registered faster enhancement in release rate than PVP in pH 1.2 buffer solutions. The release rate of freeze-dried FA formulation with Naringin-G exhibited at least five-fold enhancement when compared to untreated FA. FA formulation with Naringin-G was stable to photodegradation under fluorescent light. Naringin-G prevented photodegradation of FA due to its antioxidant effect and scavenged radicals. These findings indicated that freeze-dried FA formulation with Naringin-G can improve its water-dispersibility and photodegradation due to the effectiveness of Naringin-G as a dispersant and cryoprotectant.
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Affiliation(s)
- Kumi Semba
- Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Kazunori Kadota
- Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Hiroshi Arima
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira Aoba, Sendai, Miyagi 980-8577, Japan
| | - Akihito Nakanishi
- Toyo Sugar Refining Co., Ltd., 18-20 Koami-Cho, Nihonbashi, Chuo-ku, Tokyo 103-0016, Japan
| | - Mahamadou Tandia
- Toyo Sugar Refining Co., Ltd., 18-20 Koami-Cho, Nihonbashi, Chuo-ku, Tokyo 103-0016, Japan
| | - Hiromasa Uchiyama
- Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Kazumasa Sugiyama
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira Aoba, Sendai, Miyagi 980-8577, Japan
| | - Yuichi Tozuka
- Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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14
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UCHIYAMA H, WADA Y, TAKAMATSU M, KADOTA K, TOZUKA Y. Improved Solubility of Quercetin by Preparing Amorphous Solid with Transglycosylated Rutin and Isoquercitrin. ACTA ACUST UNITED AC 2018. [DOI: 10.2525/ecb.56.161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - Yuhei WADA
- Osaka University of Pharmaceutical Sciences
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15
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Aizawa Y, Sunada S, Hirakawa H, Fujimori A, Kato TA, Uesaka M. Design and evaluation of a novel flavonoid-based radioprotective agent utilizing monoglucosyl rutin. JOURNAL OF RADIATION RESEARCH 2018; 59:272-281. [PMID: 29373678 PMCID: PMC5967546 DOI: 10.1093/jrr/rrx090] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/13/2017] [Indexed: 06/07/2023]
Abstract
In this study, three novel flavonoid composite materials, created by combining an aglycone [quercetin (QUE), hesperetin (HES) or naringenin (NAR)] with monoglucosyl rutin (MGR), were designed to test for improved radioprotectivity compared with that provided by administration of MGR alone. Aglycone in the MGR-composite state was highly soluble in water, compared with aglycone alone dissolved in dimethyl sulfoxide or distilled water. The antioxidant activity of the three flavonoid composites was as high as that of MGR only. Next, the cytotoxicity test after 30 min treatment of an MGR composite showed a clear reduction in cell viability and suggested that a rapid introduction of aglycone into cells had taken place. In addition, QUE/MGR and HES/MGR composites strongly scavenged intracellular reactive oxygen species (ROS) induced by X-ray irradiation as well as MGR alone did. However, in the colony-formation assay using irradiated Chinese hamster ovary (CHO) cells, the HES/MGR composite showed a stronger radioprotective effect than MGR alone did, but the QUE/MGR composite showed no additional protective effect compared with the control. Furthermore, it was revealed that QUE and QUE/MGR composite treatment had the effect of reducing the glutathione (GSH) content in cells, and that QUE showed a stronger inhibition of PARP activity compared that of HES and NAR. Our data demonstrated that when designing a flavonoid composite as a radioprotective agent, it was necessary to select an appropriate aglycone, considering not only its antioxidant ability but also its inhibitory effect on cell recovery or DNA repair after radiation injury.
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Affiliation(s)
- Yasushi Aizawa
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shigeaki Sunada
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hirokazu Hirakawa
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, 263-855, Japan
| | - Akira Fujimori
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, 263-855, Japan
| | - Takamitsu A Kato
- Department of Environmental and Radiological Health Sciences, Colorado State University, 1618 Campus Delivery, Fort Collins, CO 80523-1618, USA
| | - Mitsuru Uesaka
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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16
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Kadota K, Hashimoto M, Yamaguchi T, Kawachi H, Uchiyama H, Tozuka Y. Preparation of a Highly Water-dispersible Powder Containing Hydrophobic Polyphenols Derived from Chrysanthemum Flower with Xanthine Oxidase-inhibitory Activity. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | | | - Takao Yamaguchi
- Pharma & Supplemental Nutrition Solutions Vehicle, Kaneka Corporation
| | - Hideo Kawachi
- Pharma & Supplemental Nutrition Solutions Vehicle, Kaneka Corporation
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17
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Development of sesamin-loaded solid dispersion with α-glycosylated stevia for improving physicochemical and nutraceutical properties. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.05.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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18
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Fujimori M, Kadota K, Tozuka Y. Mixed Micelle System Produced by Interaction Between Transglycosylated Stevia and an Ionic Surfactant Improves Dissolution Profile of Mefenamic Acid. J Pharm Sci 2017; 106:1117-1123. [DOI: 10.1016/j.xphs.2016.12.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/22/2016] [Accepted: 12/16/2016] [Indexed: 11/25/2022]
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19
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Aoki C, Takeuchi Y, Higashi K, Okamoto Y, Nakanishi A, Tandia M, Uzawa J, Ueda K, Moribe K. Structural elucidation of a novel transglycosylated compound α-glucosyl rhoifolin and of α-glucosyl rutin by NMR spectroscopy. Carbohydr Res 2017; 443-444:37-41. [DOI: 10.1016/j.carres.2017.03.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/11/2017] [Accepted: 03/11/2017] [Indexed: 11/15/2022]
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20
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Kadota K, Okamoto D, Sato H, Onoue S, Otsu S, Tozuka Y. Hybridization of polyvinylpyrrolidone to a binary composite of curcumin/α-glucosyl stevia improves both oral absorption and photochemical stability of curcumin. Food Chem 2016; 213:668-674. [DOI: 10.1016/j.foodchem.2016.07.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 06/06/2016] [Accepted: 07/05/2016] [Indexed: 12/11/2022]
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21
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Kadota K, Semba K, Shakudo R, Sato H, Deki Y, Shirakawa Y, Tozuka Y. Inhibition of Photodegradation of Highly Dispersed Folic Acid Nanoparticles by the Antioxidant Effect of Transglycosylated Rutin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3062-3069. [PMID: 27039660 DOI: 10.1021/acs.jafc.6b00334] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We developed highly dispersible and photostable nanoparticles of vitamin, folic acid (FA). FA was wet bead milled with milling and dispersing adjuvants and transglycosylated compounds such as α-glucosyl hesperidin (Hesperidin-G) and rutin (Rutin-G), which solubilized FA. The milled slurries of FA particles with transglycosylated compounds consisted of nanosized particles with a median diameter of <100 nm. The lyophilized formulations of these slurries retained their nanometer size after resuspension in water with no aggregation. The apparent solubility of FA in these formulations was 100-fold higher than that of untreated FA. The solubilizing effect of Rutin-G may affect the particle size reduction and dispersibility of FA. The photostability results showed that the strong antioxidant activity of Rutin-G substantially increased the photostability of FA solution. On the basis of these results, bead milling of FA with Rutin-G is a promising technique for developing highly dispersible, photostable nanoparticle FA formulations.
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Affiliation(s)
- Kazunori Kadota
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Kumi Semba
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Ryosuke Shakudo
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Hideyuki Sato
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Yuto Deki
- Department of Chemical Engineering and Materials Science, Doshisha University , 1-3 Miyakodani, Tatara, Kyotanabe, Kyoto 610-0321, Japan
| | - Yoshiyuki Shirakawa
- Department of Chemical Engineering and Materials Science, Doshisha University , 1-3 Miyakodani, Tatara, Kyotanabe, Kyoto 610-0321, Japan
| | - Yuichi Tozuka
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
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22
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Soluble hydrolysis-resistant composite formulation of curcumin containing α-glucosyl hesperidin and polyvinylpyrrolidone. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2016.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Fujimori M, Kadota K, Kato K, Seto Y, Onoue S, Sato H, Ueda H, Tozuka Y. Low hygroscopic spray-dried powders with trans-glycosylated food additives enhance the solubility and oral bioavailability of ipriflavone. Food Chem 2016. [DOI: 10.1016/j.foodchem.2015.06.081] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Kadota K, Nishimura T, Hotta D, Tozuka Y. Preparation of composite particles of hydrophilic or hydrophobic drugs with highly branched cyclic dextrin via spray drying for dry powder inhalers. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2015.05.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Chen Y, Quan P, Liu X, Guo W, Song W, Cun D, Wang Z, Fang L. Enhancement of skin permeation of flurbiprofen via its transdermal patches using isopulegol decanoate (ISO-C10) as an absorption enhancer: pharmacokinetic and pharmacodynamic evaluation. J Pharm Pharmacol 2015; 67:1232-9. [DOI: 10.1111/jphp.12428] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 03/01/2015] [Indexed: 11/28/2022]
Abstract
Abstract
Objectives
The study aimed to prepare a transdermal patch for flurbiprofen using isopulegol decanoate (ISO-C10) as a permeation enhancer, and to evaluate the in-vitro and in-vivo percutaneous permeation of the drug, as well as the pharmacodynamic efficacy of the formulation.
Methods
The permeation experiments were conducted on rabbit skin, and the pharmacokinetic profiles and synovial fluid drug concentration were measured after in-vivo transdermal administration. A deconvolution approach was employed to analyse the correlation between the in-vitro and in-vivo drug permeation. The anti-inflammatory and analgesic effects were, respectively, assessed using the adjuvant arthritis model and the acetic acid induced pain model.
Key findings
ISO-C10 could increase the in-vitro permeation of flurbiprofen from 46.22 ± 5.65 μg/cm2 to 101.07 ± 10.85 μg/cm2. The in-vivo absorption of the drug was also improved by the enhancer, and a good linear correlation was observed between the in-vitro and in-vivo drug permeation. Meanwhile, the ISO-C10 contained patches increased the drug disposition in synovial fluid and enhanced the pharmacodynamic efficacy of the formulation.
Conclusions
ISO-C10 would be a promising permeation enhancer for improving the in-vitro and in-vivo delivery of flurbiprofen from its transdermal patches.
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Affiliation(s)
- Yang Chen
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Peng Quan
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Xiaochang Liu
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Wenjia Guo
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Wenting Song
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Dongmei Cun
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Zhongyan Wang
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Liang Fang
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
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26
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Absorption improvement of tranilast by forming highly soluble nano-size composite structures associated with α-glucosyl rutin via spray drying. Eur J Pharm Biopharm 2015; 92:49-55. [DOI: 10.1016/j.ejpb.2015.02.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 02/16/2015] [Accepted: 02/19/2015] [Indexed: 11/19/2022]
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27
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Fujimori M, Kadota K, Shimono K, Shirakawa Y, Sato H, Tozuka Y. Enhanced solubility of quercetin by forming composite particles with transglycosylated materials. J FOOD ENG 2015. [DOI: 10.1016/j.jfoodeng.2014.10.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Drug solubilization mechanism of α-glucosyl stevia by NMR spectroscopy. Int J Pharm 2014; 465:255-61. [DOI: 10.1016/j.ijpharm.2014.01.035] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 01/06/2014] [Accepted: 01/28/2014] [Indexed: 11/23/2022]
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29
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Matsuoka H, Onishi T, Ghosh A. pH-responsive non-surface-active/surface-active transition of weakly ionic amphiphilic diblock copolymers. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3125-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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