1
|
Inoue Y, Nanri A, Arce FJ, See GL, Tanikawa T, Yokogawa T, Kitamura M. Preparation and Spectroscopic Characterization of Ternary Inclusion Complexes of Ascorbyl Palmitate and Urea with γ-Cyclodextrin. CHEMENGINEERING 2023. [DOI: 10.3390/chemengineering7020029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
A three-component inclusion complex of ascorbyl palmitate (ASCP), urea (UR), and γ-cyclodextrin (γCD) with a molar ratio of 1/12 has been prepared for the first time using the evaporation method (EVP method) and the grinding and mixing method (GM method). Also, we investigated changes in the physicochemical properties of the three-component complexes. The powder X-ray diffraction (PXRD) measurements showed ASCP, UR, and γCD characteristic peaks in the physical mixture (PM) (AU (ASCP/UR = 1/12)/γCD = 1/2). In GM (AU (ASCP/UR = 1/12)/γCD = 1/1), new diffraction peaks were observed around 2θ = 7.5° and 16.6°, while characteristic peaks derived from EVP (ASCP/UR = 1/12) were observed at 2θ = 23.4° and 24.9°. On the other hand, new diffraction peaks at 2θ = 7.4° and 16.6° were observed in GM (1/2). In the differential scanning calorimeter (DSC) measurement, an endothermic peak at around 83 °C was observed in the GM (1/1) sample, which is thought to originate from the phase transition of urea from the hexagonal to the tetragonal form. An endothermic peak around 113.9 °C was also observed for EVP (ASCP/UR = 1/12). However, no characteristic phase transition-derived peak or EVP (ASCP/UR = 1/12)-derived endothermic peak was observed in GM (1/2). Near infrared (NIR) spectroscopy of GM (1/2) showed no shift in the peak derived from the CH group of ASCP. The peaks derived from the NH group of UR shifted to the high and low wavenumber sides at 5032 cm−1 and 5108 cm−1 in EVP (ASCP/UR = 1/12). The peak derived from the OH group of γCD shifted, and the peak derived from the OH group of ASCP broadened at GM (1/2). These results suggest that AU (ASCP/UR = 1/12)/γCD prepared by the mixed grinding method formed inclusion complexes at the molar ratio (1/2).
Collapse
|
2
|
Jansook P, Loftsson T. Self-assembled γ-cyclodextrin as nanocarriers for enhanced ocular drug bioavailability. Int J Pharm 2022; 618:121654. [DOI: 10.1016/j.ijpharm.2022.121654] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/21/2022] [Accepted: 03/07/2022] [Indexed: 12/21/2022]
|
3
|
Ando N, Uenuma S, Yokoyama H, Ito K. Thermally induced disassembly mechanism of pseudo-polyrotaxane nanosheets consisting of β-CD and a poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) triblock copolymer. Polym Chem 2022. [DOI: 10.1039/d1py01386f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PPRNSs dissolved in two steps during heating owing to the anisotropy of the topological constraint of β-CD by axis polymers.
Collapse
Affiliation(s)
- Naoki Ando
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Chiba 277-8561, Japan
| | - Shuntaro Uenuma
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Chiba 277-8561, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Chiba 277-8561, Japan
| |
Collapse
|
4
|
Sasako H, Koyama K, Higashi K, Ueda K, Ishimoto A, Moribe K. Enteric complex layer-coated controlled release of capsaicin from phytosterol/γ-cyclodextrin microparticles via guest exchange reaction with taurocholic acid. Eur J Pharm Sci 2021; 168:106038. [PMID: 34637895 DOI: 10.1016/j.ejps.2021.106038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/10/2021] [Accepted: 09/29/2021] [Indexed: 02/05/2023]
Abstract
Phytosterol (PSE)/γ-cyclodextrin (γ-CD) microparticles have a capsule-like structure, wherein the hydrophobic PSE core is surrounded by outer layers of the hydrophilic PSE/γ-CD inclusion complex crystal. The microparticles could mask the undesirable taste of capsaicin (CAP) by encapsulation of CAP into the microparticles. In the present study, the dissolution of CAP from PSE/γ-CD microparticles into artificial intestinal fluids was examined using the paddle method. The dissolution of CAP from the microparticles was suppressed at pH 1.2 and 5.0. On the other hand, the dissolution was significantly enhanced in fasted and fed state simulated intestinal fluid (FaSSIF and FeSSIF) . Taurocholate (TCA), contained in these artificial fluids, induced rapid dissolution of CAP from microparticles. The mechanism of CAP dissolution from the microparticles in the presence of TCA was investigated using in situ1H NMR spectroscopy. During the incubation of the mixed suspension of the microparticles and TCA, γ-CD peaks started to appear, and the TCA peak showed a gradual upfield shift. Quantitative analysis of NMR results showed that the TCA/γ-CD inclusion complex could form during incubation, according to the dissolution of γ-CD from the microparticles via the guest exchange reaction of PSE by TCA. The collapse of the PSE/γ-CD inclusion complex crystal at the outer shell of microparticles could trigger the release of CAP into the intestinal fluid. Thus, PSE/γ-CD microparticles can be used as an enteric controlled-release system that releases encapsulated drugs not via the conventional pH changes but via guest exchange reaction with TCA.
Collapse
Affiliation(s)
- Hiroshi Sasako
- Research & Development Institute, House Foods Corporation, 1-4, Takanodai, Yotsukaido-shi, Chiba 284-0033, Japan.
| | - Kazuo Koyama
- Central Research & Development Institute, House Foods Group Inc., 1-4, Takanodai, Yotsukaido-shi, Chiba 284-0033, Japan
| | - Kenjirou Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuou-ku, Chiba-shi, Chiba 260-8675, Japan
| | - Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuou-ku, Chiba-shi, Chiba 260-8675, Japan
| | - Arisa Ishimoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuou-ku, Chiba-shi, Chiba 260-8675, Japan
| | - Kunikazu Moribe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuou-ku, Chiba-shi, Chiba 260-8675, Japan
| |
Collapse
|
5
|
Multiple conformations and supramolecular synthons in almost fifty crystal structures of the anti-HIV/HBV drug lamivudine. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
6
|
Higashi K, Ueda K, Moribe K. [Design Features in the Molecular-level Development of Solid Pharmaceutical Formulations Based on Supramolecular Structures]. YAKUGAKU ZASSHI 2019; 139:157-164. [PMID: 30713224 DOI: 10.1248/yakushi.18-00168-2] [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
We focused on the crystal structure of cyclodextrin (CD) to develop new solid CD complexes. There are two large spaces in the columnar structure of CD crystals: one inside a CD cavity and another between CD columns. New solid CD complexes can be designed by incorporating guest drugs between the CD columns. We succeeded in preparing a solid drug/[polyethylene glycol (PEG)/γ-CD-polypseudoraxane (PPRX)] complex by a sealed-heating method via the gas phase. A drug/(PEG/γ-CD-PPRX) complex has a structure in which PEGs are included in a γ-CD cavity, and guest drugs are incorporated between the γ-CD columns. Screening by a sealed-heating method determined that a variety of guest drugs with varying molecular size and log P could be incorporated into the spaces between γ-CD columns, following a stoichiometric rule. Another method, via solid phase using cogrinding and subsequent heating, was developed to prepare drug/(PEG/γ-CD-PPRX) complex. This method enabled us to prepare the complex with a thermally unstable drug, as well as a drug/(PEG/α-CD-PPRX) complex not formed using the sealed-heating method. Both the structure and molecular state of each drug in the complexes were characterized by powder X-ray diffraction and solid-state NMR measurements. The dissolution character and thermal stability of the drug incorporated in the complex could be improved by the specific complex formation. The solid CD complexes thus developed have potential for drug-encapsulation and as drug-release carriers, owing to their unique structural and pharmaceutical properties.
Collapse
Affiliation(s)
| | - Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Kunikazu Moribe
- Graduate School of Pharmaceutical Sciences, Chiba University
| |
Collapse
|
7
|
Liu N, Higashi K, Ueda K, Moribe K. Effect of guest drug character encapsulated in the cavity and intermolecular spaces of γ-cyclodextrins on the dissolution property of ternary γ-cyclodextrin complex. Int J Pharm 2017; 531:543-549. [DOI: 10.1016/j.ijpharm.2017.04.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 04/17/2017] [Accepted: 04/21/2017] [Indexed: 12/25/2022]
|
8
|
Chaudhuri S, DiScenza DJ, Smith B, Yocum R, Levine M. Array-based detection of isomeric and analogous analytes employing synthetically modified fluorophore attached β-cyclodextrin derivatives. NEW J CHEM 2017. [DOI: 10.1039/c7nj02968c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Improved selectivity and sensitivity using covalent fluorophore–cyclodextrin analogues resulted in 100% successful classification for five classes of analytes.
Collapse
Affiliation(s)
| | | | - Benjamin Smith
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
| | - Reid Yocum
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
| | - Mindy Levine
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
| |
Collapse
|
9
|
Inoue Y, Watanabe S, Suzuki R, Murata I, Kanamoto I. Evaluation of actarit/γ-cyclodextrin complex prepared by different methods. J INCL PHENOM MACRO 2014. [DOI: 10.1007/s10847-014-0445-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Mako T, Marks P, Cook N, Levine M. Fluorescent detection of polycyclic aromatic hydrocarbons in ternary cyclodextrin complexes. Supramol Chem 2012. [DOI: 10.1080/10610278.2012.703325] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
11
|
Kurkov SV, Loftsson T. Cyclodextrins. Int J Pharm 2012; 453:167-80. [PMID: 22771733 DOI: 10.1016/j.ijpharm.2012.06.055] [Citation(s) in RCA: 540] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 06/25/2012] [Accepted: 06/26/2012] [Indexed: 01/24/2023]
Abstract
Although cyclodextrins (CDs) have been studied for over 100 years and can be found in at least 35 pharmaceutical products, they are still regarded as novel pharmaceutical excipients. CDs are oligosaccharides that possess biological properties that are similar to their linear counterparts, but some of their physicochemical properties differ. CDs are able to form water-soluble inclusion complexes with many poorly soluble lipophilic drugs. Thus, CDs are used to enhance the aqueous solubility of drugs and to improve drug bioavailability after, for example, oral administration. Through CD complexation, poorly soluble drugs can be formulated as aqueous parenteral solutions, nasal sprays and eye drop solutions. These oligosaccharides are being recognized as non-toxic and pharmacologically inactive excipients for both drug and food products. Recently, it has been observed that CDs and CD complexes in particular self-assemble to form nanoparticles and that, under certain conditions, these nanoparticles can self-assemble to form microparticles. These properties have changed the way we perform CD research and have given rise to new CD formulation opportunities. Here, the pharmaceutical applications of CDs are reviewed with an emphasis on their solubilizing properties, their tendency to self-assemble to form aggregates, CD ternary complexes, and their metabolism and pharmacokinetics.
Collapse
Affiliation(s)
- Sergey V Kurkov
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, IS-107 Reykjavik, Iceland
| | | |
Collapse
|
12
|
|
13
|
Higashi K, Ideura S, Waraya H, Moribe K, Yamamoto K. Structural Evaluation of Crystalline Ternary γ-Cyclodextrin Complex. J Pharm Sci 2011; 100:325-33. [DOI: 10.1002/jps.22273] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Accepted: 05/20/2010] [Indexed: 11/09/2022]
|