1
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Ueda T, Yamaguchi MS, Christian-Tabak L, Takai Y, Tode C. Quantifying the bitter masking effect of drug-cyclodextrin complexation: NMR-ROESY mixing time approach. Carbohydr Res 2024; 537:109067. [PMID: 38442683 DOI: 10.1016/j.carres.2024.109067] [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: 09/28/2023] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 03/07/2024]
Abstract
Taste, especially unpleasant taste, can be key for patient compliance. In the formulation development process, drug-cyclodextrin (CD) inclusion complexes are often used to improve the solubility of a drug and/or mask its bitterness. This study aimed to evaluate the bitter masking effect of CDs on different drugs using NMR-ROESY analysis, human sensory tests, and e-tongue measurements. The strength of inclusion complex formation between drugs and CDs was investigated by NMR-ROSEY, and these results were compared to human sensory test results. In the sensory test, participants identified which drug-CD inclusion complexes were not bitter. NMR-ROSEY results aligned with the sensory tests; short magnetization transfer times corresponded to masked bitterness. The electrical tongue was not able to detect the taste of any of the drug-CD inclusion complexes. Additionally, we used NMR-ROSEY to determine which drug-CD inclusion complex formed in a system with multiple drug substances present. This research offers valuable insights into the bitter masking effect of CDs on different drugs and presents a comprehensive evaluation approach using various methods. This knowledge has significant implications for the pharmaceutical industry, clinical practice, and patient care, contributing to improved patient compliance and satisfaction with bitter medications.
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Affiliation(s)
- Tomohiko Ueda
- Sumitomo Pharma Co., Ltd., 3-1-98 Kasugade-naka, Konohana-ku, Osaka, 554-0022, Japan.
| | - Mei S Yamaguchi
- Sumitomo Pharma Co., Ltd., 3-1-98 Kasugade-naka, Konohana-ku, Osaka, 554-0022, Japan
| | - Leela Christian-Tabak
- Sumitomo Pharma Co., Ltd., 3-1-98 Kasugade-naka, Konohana-ku, Osaka, 554-0022, Japan
| | - Yoshiaki Takai
- Sumitomo Pharma Co., Ltd., 3-1-98 Kasugade-naka, Konohana-ku, Osaka, 554-0022, Japan
| | - Chisato Tode
- Kobe Pharmaceutical University, 4-19-1 Motoyama-kitamachi, Higashinada-ku, Kobe, Hyogo, 658-8558, Japan.
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2
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A strategy to maintain the organoleptic quality of flavor-β-cyclodextrin inclusion complexes: Characteristics aroma reconstruction of Osmanthus absolute. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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3
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Donthi MR, Munnangi SR, Krishna KV, Marathe SA, Saha RN, Singhvi G, Dubey SK. Formulating Ternary Inclusion Complex of Sorafenib Tosylate Using β-Cyclodextrin and Hydrophilic Polymers: Physicochemical Characterization and In Vitro Assessment. AAPS PharmSciTech 2022; 23:254. [DOI: 10.1208/s12249-022-02406-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 08/22/2022] [Indexed: 11/30/2022] Open
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4
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Machado RD, Silva JCG, Silva LAD, Oliveira GDAR, Lião LM, Lima EM, de Morais MC, da Conceição EC, Rezende KR. Improvement in Solubility-Permeability Interplay of Psoralens from Brosimum gaudichaudii Plant Extract upon Complexation with Hydroxypropyl-β-cyclodextrin. Molecules 2022; 27:molecules27144580. [PMID: 35889459 PMCID: PMC9322082 DOI: 10.3390/molecules27144580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/25/2022] Open
Abstract
Psoralen (PSO) and 5-methoxypsoralen (5-MOP) are widely used drugs in oral photochemotherapy against vitiligo and major bioactive components of root bark extract of Brosimum gaudichaudii Trécul (EBGT), previously standardized by LC-MS. However, the exceptionally low water solubility of these psoralens can cause incomplete and variable bioavailability limiting their applications and patient adherence to treatment. Therefore, the purpose of this work was to investigate the effects of 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) inclusion complex on the solubility and jejunal permeability of PSO and 5-MOP from EBGT. Characterization of inclusion complexes were evaluated by current methods in nuclear magnetic resonance studies on aqueous solution, Fourier transform infrared spectroscopy, thermal analysis, and scanning electron microscopy in solid state. Ex vivo rat jejunal permeability was also investigated and compared for both pure psoralens and plant extract formulation over a wide HP-β-CD concentration range (2.5 to 70 mM). Phase solubility studies of the PSO- and 5-MOP-HP-β-CD inclusion complex showed 1:1 inclusion complex formation with small stability constants (Kc < 500 M−1). PSO and 5-MOP permeability rate decreased after adding HP-β-CD by 6- and 4-fold for pure standards and EBGT markers, respectively. Nevertheless, the complexation with HP-β-CD significantly improved solubility of PSO (until 10-fold) and 5-MOP (until 31-fold). As a result, the permeability drop could be overcome by solubility augmentation, implying that the HP-β-CD inclusion complexes with PSO, 5-MOP, or EBGT can be a valuable tool for designing and developing novel oral drug product formulation containing these psoralens for the treatment of vitiligo.
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Affiliation(s)
- Rúbia Darc Machado
- Laboratório de Biofarmácia e Farmacocinética (BioPk), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (R.D.M.); (J.C.G.S.)
| | - Júlio C. G. Silva
- Laboratório de Biofarmácia e Farmacocinética (BioPk), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (R.D.M.); (J.C.G.S.)
| | - Luís A. D. Silva
- Laboratório de Nanotecnologia Farmacêutica e Sistemas de Liberação de Fármacos (FarmaTec), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (L.A.D.S.); (E.M.L.)
| | - Gerlon de A. R. Oliveira
- Laboratório de Ressonância Magnética Nuclear (LabRMN), Instituto de Química, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (G.d.A.R.O.); (L.M.L.)
| | - Luciano M. Lião
- Laboratório de Ressonância Magnética Nuclear (LabRMN), Instituto de Química, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (G.d.A.R.O.); (L.M.L.)
| | - Eliana M. Lima
- Laboratório de Nanotecnologia Farmacêutica e Sistemas de Liberação de Fármacos (FarmaTec), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (L.A.D.S.); (E.M.L.)
| | - Mariana C. de Morais
- Laboratório de PD&I de Bioprodutos, Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (M.C.d.M.); (E.C.d.C.)
| | - Edemilson C. da Conceição
- Laboratório de PD&I de Bioprodutos, Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (M.C.d.M.); (E.C.d.C.)
| | - Kênnia R. Rezende
- Laboratório de Biofarmácia e Farmacocinética (BioPk), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil; (R.D.M.); (J.C.G.S.)
- Correspondence: ; Tel.: +55-(62)3209-6470
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Fahmy S, Nematallah KA, Mahdy NK, El-Askary HI, Meselhy MR, El-Said Azzazy HM. Enhanced Antioxidant, Antiviral, and Anticancer Activities of the Extract of Fermented Egyptian Rice Bran Complexed with Hydroxypropyl-β-cyclodextrin. ACS OMEGA 2022; 7:19545-19554. [PMID: 35721952 PMCID: PMC9202066 DOI: 10.1021/acsomega.2c01281] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Egyptian rice bran was fermented with baker's yeast, and released phenolics were extracted with aqueous methanol to give fermented rice bran extract (FRBE). The analysis of the FRBE with ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry revealed 21 compounds, mainly phenolic acids and flavonoids. The FRBE was then complexed with (2-hydroxypropyl)-β-cyclodextrin (HPβCD) via noncovalent host-guest inclusion complexation using the thin-film hydration technique to improve the hydrophilicity and bioactivity of the FRBE. The formation of the inclusion complex was confirmed using HPLC, 1H NMR, FT-IR, and a phase solubility study. In addition, the biological activities of the complex were investigated. The FRBE/HPβCD inclusion complex had more pronounced antioxidant, antiviral, and anticancer activities compared to free FRBE. These findings warrant the future investigation of potential medical applications of FRBE.
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Affiliation(s)
- Sherif
Ashraf Fahmy
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, PO. Box 74, New Cairo, Cairo 11835, Egypt
- School
of Life and Medical Sciences, University
of Hertfordshire, Global Academic Foundation, R5 New Garden City, New
Cairo, Cairo 11835, Egypt
| | - Khaled A. Nematallah
- Faculty
of Pharmacy, Department of Pharmacognosy and Microbiology, The British University in Egypt, El Sherouk, Cairo 11837, Egypt
| | - Noha Khalil Mahdy
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, PO. Box 74, New Cairo, Cairo 11835, Egypt
| | - Hesham I. El-Askary
- Faculty
of Pharmacy, Department of Pharmacognosy, Cairo University, Giza, Giza 12613, Egypt
| | - Meselhy Ragab Meselhy
- Faculty
of Pharmacy, Department of Pharmacognosy, Cairo University, Giza, Giza 12613, Egypt
| | - Hassan Mohamed El-Said Azzazy
- Department
of Chemistry, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, PO. Box 74, New Cairo, Cairo 11835, Egypt
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6
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Fahmy SA, Mahdy NK, Al Mulla H, ElMeshad AN, Issa MY, Azzazy HMES. PLGA/PEG Nanoparticles Loaded with Cyclodextrin- Peganum harmala Alkaloid Complex and Ascorbic Acid with Promising Antimicrobial Activities. Pharmaceutics 2022; 14:142. [PMID: 35057040 PMCID: PMC8780513 DOI: 10.3390/pharmaceutics14010142] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 02/01/2023] Open
Abstract
Antimicrobial drugs face numerous challenges, including drug resistance, systemic toxic effects, and poor bioavailability. To date, treatment choices are limited, which warrants the search for novel potent antivirals, including those extracted from natural products. The seeds of Peganum harmala L. (Zygophyllaceae family) have been reported to have antimicrobial, antifungal, and anticancer activities. In the present study, a 2-hydroxy propyl-β-cyclodextrin (HPβCD)/harmala alkaloid-rich fraction (HARF) host-guest complex was prepared using a thin-film hydration method to improve the water solubility and bioavailability of HARF. The designed complex was then co-encapsulated with ascorbic acid into PLGA nanoparticles coated with polyethylene glycol (HARF-HPßCD/AA@PLGA-PEG NPs) using the W/O/W multiple emulsion-solvent evaporation method. The average particle size, PDI, and zeta potential were 207.90 ± 2.60 nm, 0.17 ± 0.01, and 31.6 ± 0.20 mV, respectively. The entrapment efficiency for HARF was 81.60 ± 1.20% and for ascorbic acid was 88 ± 2.20%. HARF-HPßCD/AA@PLGA-PEG NPs had the highest antibacterial activity against Staphylococcus aureus and Escherichia coli (MIC of 0.025 mg/mL). They also exhibited high selective antiviral activity against the H1N1 influenza virus (IC50 2.7 μg/mL) without affecting the host (MDCK cells). In conclusion, the co-encapsulation of HPCD-HARF complex and ascorbic acid into PLGA-PEG nanoparticles significantly increased the selective H1N1 killing activity with minimum host toxic effects.
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Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt; (S.A.F.); (N.K.M.); (H.A.M.)
| | - Noha Khalil Mahdy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt; (S.A.F.); (N.K.M.); (H.A.M.)
| | - Hadeer Al Mulla
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt; (S.A.F.); (N.K.M.); (H.A.M.)
| | - Aliaa Nabil ElMeshad
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt;
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Technology, The Egyptian Chinese University, Gesr El Suez Street, Cairo 11786, Egypt
| | - Marwa Y. Issa
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt;
| | - Hassan Mohamed El-Said Azzazy
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt; (S.A.F.); (N.K.M.); (H.A.M.)
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7
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Abstract
Due to their unique structural, physical and chemical properties, cyclodextrins and their derivatives have been of great interest to scientists and researchers in both academia and industry for over a century. Many of the industrial applications of cyclodextrins have arisen from their ability to encapsulate, either partially or fully, other molecules, especially organic compounds. Cyclodextrins are non-toxic oligopolymers of glucose that help to increase the solubility of organic compounds with poor aqueous solubility, can mask odors from foul-smelling compounds, and have been widely studied in the area of drug delivery. In this review, we explore the structural and chemical properties of cyclodextrins that give rise to this encapsulation (i.e., the formation of inclusion complexes) ability. This review is unique from others written on this subject because it provides powerful insights into factors that affect cyclodextrin encapsulation. It also examines these insights in great detail. Later, we provide an overview of some industrial applications of cyclodextrins, while emphasizing the role of encapsulation in these applications. We strongly believe that cyclodextrins will continue to garner interest from scientists for many years to come, and that novel applications of cyclodextrins have yet to be discovered.
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8
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Gieroba B, Kalisz G, Sroka-Bartnicka A, Płazińska A, Płaziński W, Starek M, Dąbrowska M. Molecular Structure of Cefuroxime Axetil Complexes with α-, β-, γ-, and 2-Hydroxypropyl-β-Cyclodextrins: Molecular Simulations and Raman Spectroscopic and Imaging Studies. Int J Mol Sci 2021; 22:ijms22105238. [PMID: 34063471 PMCID: PMC8156438 DOI: 10.3390/ijms22105238] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/16/2022] Open
Abstract
The formation of cefuroxime axetil+cyclodextrin (CA+CD) complexes increases the aqueous solubility of CA, improves its physico-chemical properties, and facilitates a biomembrane-mediated drug delivery process. In CD-based tablet formulations, it is crucial to investigate the molecular details of complexes in final pharmaceutical preparation. In this study, Raman spectroscopy and mapping were applied for the detection and identification of chemical groups involved in α-, β-, γ-, and 2-hydroxypropyl-β-CD (2-HP- β-CD)+CA complexation process. The experimental studies have been complemented by molecular dynamics-based investigations, providing additional molecular details of CA+CD interactions. It has been demonstrated that CA forms the guest–host type inclusion complexes with all studied CDs; however, the nature of the interactions is slightly different. It seems that both α- and β-CD interact with furanyl and methoxy moieties of CA, γ-CD forms a more diverse pattern of interactions with CA, which are not observed in other CDs, whereas 2HP-β-CD binds CA with the contribution of hydrogen bonding. Apart from supporting this interpretation of the experimental data, molecular dynamics simulations allowed for ordering the CA+CD binding affinities. The obtained results proved that the molecular details of the host–guest complexation can be successfully predicted from the combination of Raman spectroscopy and molecular modeling.
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Affiliation(s)
- Barbara Gieroba
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland; (G.K.); (A.S.-B.); (A.P.)
- Correspondence: (B.G.); (W.P.)
| | - Grzegorz Kalisz
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland; (G.K.); (A.S.-B.); (A.P.)
| | - Anna Sroka-Bartnicka
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland; (G.K.); (A.S.-B.); (A.P.)
- Department of Genetics and Microbiology, Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University, ul. Akademicka 19, 20-033 Lublin, Poland
| | - Anita Płazińska
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland; (G.K.); (A.S.-B.); (A.P.)
| | - Wojciech Płaziński
- Jerzy Haber Institute of Catalysis and Surface Chemistry, ul. Niezapominajek 8, 30-239 Krakow, Poland
- Correspondence: (B.G.); (W.P.)
| | - Małgorzata Starek
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, ul. Medyczna 9, 30-688 Kraków, Poland; (M.S.); (M.D.)
| | - Monika Dąbrowska
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, ul. Medyczna 9, 30-688 Kraków, Poland; (M.S.); (M.D.)
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9
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Cyclodextrin binding constants as a function of pH for compounds with multiple pKa values. Int J Pharm 2020; 585:119493. [DOI: 10.1016/j.ijpharm.2020.119493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/29/2020] [Accepted: 05/30/2020] [Indexed: 11/19/2022]
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10
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Correlation between the stability constant and pH for β-cyclodextrin complexes. Int J Pharm 2019; 568:118523. [DOI: 10.1016/j.ijpharm.2019.118523] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 06/17/2019] [Accepted: 07/13/2019] [Indexed: 01/15/2023]
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11
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Khattab MM, Dahman Y. Functionalized bacterial cellulose nanowhiskers as long‐lasting drug nanocarrier for antibiotics and anticancer drugs. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23566] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
| | - Yaser Dahman
- Department of Chemical EngineeringRyerson UniversityToronto ON Canada
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12
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Fateminasab F, Bordbar A, Shityakov S, Gholami S. Diadzein complexation with unmodified cyclodextrins: A detailed experimental and theoretical study. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.124] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Jansook P, Ogawa N, Loftsson T. Cyclodextrins: structure, physicochemical properties and pharmaceutical applications. Int J Pharm 2017; 535:272-284. [PMID: 29138045 DOI: 10.1016/j.ijpharm.2017.11.018] [Citation(s) in RCA: 431] [Impact Index Per Article: 61.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/07/2017] [Accepted: 11/08/2017] [Indexed: 01/20/2023]
Abstract
Since their discovery over 100 years ago cyclodextrins (CDs) have been the subject of numerous scientific publications. In 2016 alone CDs were the subject of over 2200 research articles published in peer-reviewed journals and mentioned in over 2300 patents and patent applications, many of which were on pharmaceutical applications. Natural CDs and their derivatives are used as enabling pharmaceutical excipients that enhance aqueous solubility of poorly soluble drugs, increase drug permeability through biological membranes and improve drug bioavailability. Unlike conventional penetration enhancers, their hydrophilic structure and high molecular weight prevents them from penetrate into lipophilic membranes leaving biological membranes intact. The natural CDs and some of their derivatives have monographs in pharmacopeias and are also commonly used as food additives and in toiletry products. CDs form inclusion complexes with lipophilic moieties of hydrophobic drugs. Furthermore, CDs are able to form non-inclusion complexes and self-assembled aggregates; small and large complex aggregates with micellar-like structures that can enhance drug solubility. Excipients commonly used in pharmaceutical formulations may have additive or inhibiting effect on the CD solubilization. Here various methods used to investigate CD aggregate formation are reviewed as well as techniques that are used to increase the solubilizing effects of CDs; methods that enhance the apparent intrinsic solubility of drugs and/or the complexation efficacy and decrease the amount of CD needed to develop CD-containing pharmaceutical formulations. It will be explained how too much or too little CD can hamper drug bioavailability, and the role of CDs in solid dosage forms and parenteral formulations, and examples given on how CDs can enhance drug delivery after ocular, nasal and pulmonary administration.
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Affiliation(s)
- Phatsawee Jansook
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phyathai Road, Wangmai, Pathumwan, Bangkok 10330, Thailand
| | - Noriko Ogawa
- Department of Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan
| | - Thorsteinn Loftsson
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, IS-107 Reykjavik, Iceland.
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14
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Loftsson T, Stefánsson E. Cyclodextrins and topical drug delivery to the anterior and posterior segments of the eye. Int J Pharm 2017; 531:413-423. [PMID: 28391041 DOI: 10.1016/j.ijpharm.2017.04.010] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 12/31/2022]
Abstract
It is generally believed that it is virtually impossible to obtain therapeutic drug concentrations in the posterior segment of the eye after topical application of aqueous, low viscosity eye drops. Thus, intravitreal drug injections and drug implants are currently used to treat diseases in the posterior segment such as macular edema. Here it is described how, through proper analysis of the drug permeation barriers and application of well-known pharmaceutical excipients, aqueous eye drops are designed that can deliver lipophilic drugs to the posterior segment as well as how such eye drops can maintain high drug concentrations in the anterior segment. Through stepwise optimization, eye drops containing solid drug/cyclodextrin complex microparticles with a mean diameter of 2-4μm, dissolved drug/cyclodextrin complex nanoparticles and dissolved drug molecules in an aqueous eye drop media of low viscosity were designed. After administration of the eye drops the microparticles slowly dissolved and maintained close to saturated drug concentrations in the aqueous tear fluid for several hours. Studies in rabbits and clinical evaluations in humans, using dorzolamide and dexamethasone as sample drugs, show that the eye drops deliver significant amounts of drugs to both the posterior segment and anterior segment of the eye. Clinical studies indicate that the eye drops can replace intravitreal injections and implants that are currently used to treat ophthalmic diseases and decrease frequency of drug administration, both of which can improve patient compliance.
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Affiliation(s)
- Thorsteinn Loftsson
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, IS-107 Reykjavik, Iceland.
| | - Einar Stefánsson
- Department of Ophthalmology, Faculty of Medicine, National University Hospital, Eiríksgata 37, IS-101 Reykjavík, Iceland
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15
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Ravera M, Gabano E, Bianco S, Ermondi G, Caron G, Vallaro M, Pelosi G, Zanellato I, Bonarrigo I, Cassino C, Osella D. Host–guest inclusion systems of Pt(IV)-bis(benzoato) anticancer drug candidates and cyclodextrins. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.03.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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Becker LF, Schwarz DH, Wenz G. Synthesis of uniform cyclodextrin thioethers to transport hydrophobic drugs. Beilstein J Org Chem 2014; 10:2920-7. [PMID: 25550759 PMCID: PMC4273231 DOI: 10.3762/bjoc.10.310] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 11/23/2014] [Indexed: 01/03/2023] Open
Abstract
Methyl and ethyl thioether groups were introduced at all primary positions of α-, β-, and γ-cyclodextrin by nucleophilic displacement reactions starting from the corresponding per-(6-deoxy-6-bromo)cyclodextrins. Further modification of all 2-OH positions by etherification with iodo terminated triethylene glycol monomethyl ether (and tetraethylene glycol monomethyl ether, respectively) furnished water-soluble hosts. Especially the β-cyclodextrin derivatives exhibit very high binding potentials towards the anaesthetic drugs sevoflurane and halothane. Since the resulting inclusion compounds are highly soluble in water at temperatures ≤37 °C they are good candidates for new aqueous dosage forms which would avoid inhalation anaesthesia.
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Affiliation(s)
- Lisa F Becker
- Organic Macromolecular Chemistry, Saarland University, Campus C4.2, 66123 Saarbrücken, Germany
| | - Dennis H Schwarz
- Organic Macromolecular Chemistry, Saarland University, Campus C4.2, 66123 Saarbrücken, Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry, Saarland University, Campus C4.2, 66123 Saarbrücken, Germany
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17
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Mateen R, Hoare T. Carboxymethyl and hydrazide functionalized β-cyclodextrin derivatives: A systematic investigation of complexation behaviours with the model hydrophobic drug dexamethasone. Int J Pharm 2014; 472:315-26. [DOI: 10.1016/j.ijpharm.2014.06.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 05/26/2014] [Accepted: 06/19/2014] [Indexed: 11/28/2022]
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Mallick A, Majumdar T, Haldar B, Roy UK. Binding interaction of a newly developed bisindole drug molecule with α-cyclodextrin: face to face shielding of indole hoops. RSC Adv 2014. [DOI: 10.1039/c4ra06087c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Inclusion compound formulation of hirsutenone with beta-cyclodextrin. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2013. [DOI: 10.1007/s40005-013-0089-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Williams HD, Trevaskis NL, Charman SA, Shanker RM, Charman WN, Pouton CW, Porter CJH. Strategies to address low drug solubility in discovery and development. Pharmacol Rev 2013; 65:315-499. [PMID: 23383426 DOI: 10.1124/pr.112.005660] [Citation(s) in RCA: 979] [Impact Index Per Article: 89.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Drugs with low water solubility are predisposed to low and variable oral bioavailability and, therefore, to variability in clinical response. Despite significant efforts to "design in" acceptable developability properties (including aqueous solubility) during lead optimization, approximately 40% of currently marketed compounds and most current drug development candidates remain poorly water-soluble. The fact that so many drug candidates of this type are advanced into development and clinical assessment is testament to an increasingly sophisticated understanding of the approaches that can be taken to promote apparent solubility in the gastrointestinal tract and to support drug exposure after oral administration. Here we provide a detailed commentary on the major challenges to the progression of a poorly water-soluble lead or development candidate and review the approaches and strategies that can be taken to facilitate compound progression. In particular, we address the fundamental principles that underpin the use of strategies, including pH adjustment and salt-form selection, polymorphs, cocrystals, cosolvents, surfactants, cyclodextrins, particle size reduction, amorphous solid dispersions, and lipid-based formulations. In each case, the theoretical basis for utility is described along with a detailed review of recent advances in the field. The article provides an integrated and contemporary discussion of current approaches to solubility and dissolution enhancement but has been deliberately structured as a series of stand-alone sections to allow also directed access to a specific technology (e.g., solid dispersions, lipid-based formulations, or salt forms) where required.
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Affiliation(s)
- Hywel D Williams
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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22
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Inclusion complex formation of β-cyclodextrin and Naproxen: a study on exothermic complex formation by differential scanning calorimetry. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0241-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Filippa MA, Sancho MI, Gasull EI. Determination of apparent binding constants by NSAIDs-βcyclodextrin complexes: HPLC, phase solubility diagrams and theoretical studies. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0236-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Hădărugă NG, Hădărugă DI, Isengard HD. “Surface water” and “strong-bonded water” in cyclodextrins: a Karl Fischer titration approach. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0143-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Inclusion complexation of naproxen with cyclosophoraoses and succinylated cyclosophoraoses in different pH environments. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0119-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Loftsson T, Brewster ME. Cyclodextrins as functional excipients: methods to enhance complexation efficiency. J Pharm Sci 2012; 101:3019-32. [PMID: 22334484 DOI: 10.1002/jps.23077] [Citation(s) in RCA: 314] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 01/16/2012] [Accepted: 01/18/2012] [Indexed: 12/19/2022]
Abstract
Cyclodextrins have gained currency as useful solubilizing excipients with an ever increasing list of beneficial properties and functionalities. Although their use in liquid dosage forms including oral and parenteral solutions is straightforward, their application to solids can be confounded by the added bulk that is contributed to the formulation. This factor has limited the use of cyclodextrin in tablets and relates systems mainly to potent drug substances. Increasing the ability of cyclodextrins to complex with drug through a manipulation of their complexation efficiency (CE) may expand the use of these materials to the increasing list of drug candidates and marketed drugs who may benefit from this technology. This brief review assesses tools and materials that have been suggested for increasing the CE for pharmaceutically useful cyclodextrins and drugs. The relative importance of impacting the drug solubility (S(0) ) and phase-solubility isotherm slope is discussed in the context of drug ionization and salt use; the impact of polymers, charge interactions, and charge shielding; and the coincidental formation of other complex types in the media. The influence of drug form as well as supersaturation is also discussed in the context of the responsible mechanisms along with aggregation, inclusion, and noninclusion complex formation.
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Affiliation(s)
- Thorsteinn Loftsson
- Faculty of Pharmaceutical Sciences, University of Iceland, IS-107 Reykjavik, Iceland.
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The effect of cyclodextrin mixtures on aqueous solubility of beclomethasone dipropionate. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-9992-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Synthesis and characterization of the inclusion complex between repaglinide and sulfobutylether-β-cyclodextrin (Captisol®). J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-010-9911-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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