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Bayat F, Homami SS, Monzavi A, Olyai MRTB. Synthesis and Characterization of Ataluren-Cyclodextrins Complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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2
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Celebioglu A, Wang N, Kilic ME, Durgun E, Uyar T. Orally Fast Disintegrating Cyclodextrin/Prednisolone Inclusion-Complex Nanofibrous Webs for Potential Steroid Medications. Mol Pharm 2021; 18:4486-4500. [PMID: 34780196 DOI: 10.1021/acs.molpharmaceut.1c00677] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Prednisolone is a widely used immunosuppressive and anti-inflammatory drug type that suffers from low aqueous solubility and bioavailability. Due to the inclusion complexation with cyclodextrins (CDs), prednisolone's drawbacks that hinder its potential during the administration can be eliminated effectively. Here, we have early shown the electrospinning of free-standing nanofibrous webs of CD/prednisolone inclusion complexes (ICs) in the absence of a polymer matrix. In this study, hydroxypropyl-beta-CD (HPβCD) has been used to form ICs with prednisolone and generate nanofibrous webs with a drug loading capacity of ∼10% (w/w). Pullulan/prednisolone nanofibrous webs have been also fabricated as a control sample having the same drug loading (∼10%, w/w). It has been demonstrated that prednisolone has been found in an amorphous state in the HPβCD/prednisolone nanofibrous web due to inclusion complexation, while it has retained its crystal structure in the pullulan/prednisolone nanofibrous web. Therefore, the HPβCD/prednisolone IC nanofibrous web has shown a faster and enhanced release profile and superior disintegration feature in artificial saliva than the pullulan/prednisolone nanofibrous web. The complexation energy calculated using ab initio modeling displayed a more favorable interaction between HPβCD and prednisolone in the case of a molar ratio of 2:1 than 1:1 (CD: drug). Here, the HPβCD/prednisolone IC nanofibrous web has been developed without using a toxic component or solvent to dissolve drug molecules and boost drug loading in amorphous nature. The investigation of IC nanofibrous webs has been conducted to formulate a promising alternative to the orally disintegrating tablet formulation of prednisolone in the market. The nanofibrous structure and the improved physicochemical properties of prednisolone arising with the complexation might ensure a faster disintegration and onset of action against commercially available and orally disintegrating delivery systems during the desired treatment.
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Affiliation(s)
- Asli Celebioglu
- Fiber Science and Apparel Design, Cornell University, Ithaca, New York 14853, United States
| | - Nancy Wang
- Fiber Science and Apparel Design, Cornell University, Ithaca, New York 14853, United States
| | - Mehmet E Kilic
- Computational Science Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Engin Durgun
- UNAM- National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Tamer Uyar
- Fiber Science and Apparel Design, Cornell University, Ithaca, New York 14853, United States
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3
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Jia L, Yang J, Cui P, Wu D, Wang S, Hou B, Zhou L, Yin Q. Uncovering solubility behavior of Prednisolone form II in eleven pure solvents by thermodynamic analysis and molecular simulation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Schmitz LM, Kinner A, Althoff K, Rosenthal K, Lütz S. Investigation of Vitamin D 2 and Vitamin D 3 Hydroxylation by Kutzneria albida. Chembiochem 2021; 22:2266-2274. [PMID: 33647186 PMCID: PMC8359954 DOI: 10.1002/cbic.202100027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/18/2021] [Indexed: 11/26/2022]
Abstract
The active vitamin D metabolites 25-OH-D and 1α,25-(OH)2 -D play an essential role in controlling several cellular processes in the human body and are potentially effective in the treatment of several diseases, such as autoimmune diseases, cardiovascular diseases and cancer. The microbial synthesis of vitamin D2 (VD2 ) and vitamin D3 (VD3 ) metabolites has emerged as a suitable alternative to established complex chemical syntheses. In this study, a novel strain, Kutzneria albida, with the ability to form 25-OH-D2 and 25-OH-D3 was identified. To further improve the conversion of the poorly soluble substrates, several solubilizers were tested. 100-fold higher product concentrations of 25-OH-D3 and tenfold higher concentrations of 25-OH-D2 after addition of 5 % (w/v) 2-hydroxypropyl β-cyclodextrin (2-HPβCD) were reached. Besides the single-hydroxylation products, the human double-hydroxylation products 1,25-(OH)2 -D2 and 1,25-(OH)2 -D3 and various other potential single- and double-hydroxylation products were detected. Thus, K. albida represents a promising strain for the biotechnological production of VD2 and VD3 metabolites.
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Affiliation(s)
- Lisa Marie Schmitz
- Chair for Bioprocess EngineeringDepartment of Biochemical and Chemical EngineeringTU Dortmund UniversityEmil-Figge-Straße 6644227DortmundGermany
| | - Alina Kinner
- Chair for Bioprocess EngineeringDepartment of Biochemical and Chemical EngineeringTU Dortmund UniversityEmil-Figge-Straße 6644227DortmundGermany
| | - Kirsten Althoff
- Chair for Bioprocess EngineeringDepartment of Biochemical and Chemical EngineeringTU Dortmund UniversityEmil-Figge-Straße 6644227DortmundGermany
| | - Katrin Rosenthal
- Chair for Bioprocess EngineeringDepartment of Biochemical and Chemical EngineeringTU Dortmund UniversityEmil-Figge-Straße 6644227DortmundGermany
| | - Stephan Lütz
- Chair for Bioprocess EngineeringDepartment of Biochemical and Chemical EngineeringTU Dortmund UniversityEmil-Figge-Straße 6644227DortmundGermany
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Kallab M, Schuetzenberger K, Hommer N, Schäfer BJ, Schmidl D, Bergmeister H, Zeitlinger M, Tan A, Jansook P, Loftsson T, Stefansson E, Garhöfer G. Bio-Distribution and Pharmacokinetics of Topically Administered γ-Cyclodextrin Based Eye Drops in Rabbits. Pharmaceuticals (Basel) 2021; 14:ph14050480. [PMID: 34070168 PMCID: PMC8158513 DOI: 10.3390/ph14050480] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/04/2021] [Accepted: 05/14/2021] [Indexed: 12/13/2022] Open
Abstract
The purpose of this study was to evaluate the ocular pharmacokinetics, bio-distribution and local tolerability of γ-cyclodextrin (γCD) based irbesartan 1.5% eye drops and candesartan 0.15% eye drops after single and multiple topical administration in rabbit eyes. In this randomized, controlled study, a total number of 59 New Zealand White albino rabbits were consecutively assigned to two study groups. Group 1 (n = 31) received irbesartan 1.5% and group 2 (n = 28) candesartan 0.15% eye drops. In both groups, single dose and multiple administration pharmacokinetic studies were performed. Rabbits were euthanized at five predefined time points after single-dose administration, whereas multiple-dose animals were dosed for 5 days twice-daily and then euthanized 1 h after the last dose administration. Drug concentration was measured by using liquid chromatography-tandem mass spectrometry (LC-MS/MS) in the retinal tissue, vitreous humor, aqueous humor, corneal tissue and in venous blood samples. Pharmacokinetic parameters including maximal drug concentration (Cmax), time of maximal drug concentration (Tmax), half-life and AUC were calculated. To assess local tolerability, six additional rabbits received 1.5% irbesartan eye drops twice daily in one eye for 28 days. Tolerability was assessed using a modified Draize test and corneal sensibility by Cochet Bonnet esthesiometry. Both γCD based eye drops were rapidly absorbed and distributed in the anterior and posterior ocular tissues. Within 0.5 h after single administration, the Cmax of irbesartan and candesartan in retinal tissue was 251 ± 142 ng/g and 63 ± 39 ng/g, respectively. In the vitreous humor, a Cmax of 14 ± 16 ng/g for irbesartan was reached 0.5 h after instillation while Cmax was below 2 ng/g for candesartan. For multiple dosing, the observed Cmean in retinal tissue was 338 ± 124 ng/g for irbesartan and 36 ± 10 ng/g for candesartan, whereas mean vitreous humor concentrations were 13 ± 5 ng/g and <2 ng/g, respectively. The highest plasma concentrations of both irbesartan (Cmax 5.64 ± 4.08 ng/mL) and candesartan (Cmax 4.32 ± 1.04 ng/mL) were reached 0.5 h (Tmax) after single administration. Local tolerability was favorable with no remarkable differences between the treated and the control eyes. These results indicate that irbesartan and candesartan in γCD based nanoparticle eye drops can be delivered to the retinal tissue of the rabbit’s eye in pharmacologically relevant concentrations. Moreover, safety and tolerability profiles appear to be favorable in the rabbit animal model.
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Affiliation(s)
- Martin Kallab
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (N.H.); (D.S.); (M.Z.)
| | - Kornelia Schuetzenberger
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, 1090 Vienna, Austria; (K.S.); (B.J.S.)
- Christian Doppler Laboratory for Ocular and Dermal Effects of Thiomers, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Nikolaus Hommer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (N.H.); (D.S.); (M.Z.)
| | - Bhavapriya Jasmin Schäfer
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, 1090 Vienna, Austria; (K.S.); (B.J.S.)
- Christian Doppler Laboratory for Ocular and Dermal Effects of Thiomers, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Doreen Schmidl
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (N.H.); (D.S.); (M.Z.)
| | - Helga Bergmeister
- Center for Biomedical Research, Medical University of Vienna, 1090 Vienna, Austria;
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (N.H.); (D.S.); (M.Z.)
| | - Aimin Tan
- Nucro-Technics, Toronto, ON M1H 2W4, Canada;
| | - Phatsawee Jansook
- Pharmaceutics and Industrial Pharmacy, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Thorsteinn Loftsson
- Faculty of Pharmaceutical Science, University of Iceland, 107 Reykjavik, Iceland;
| | - Einar Stefansson
- Department of Ophthalmology, University of Iceland, 101 Reykjavik, Iceland;
| | - Gerhard Garhöfer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (N.H.); (D.S.); (M.Z.)
- Correspondence: ; Tel.: +43-1-40400-29810
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Omtvedt LA, Dalheim MØ, Nielsen TT, Larsen KL, Strand BL, Aachmann FL. Efficient Grafting of Cyclodextrin to Alginate and Performance of the Hydrogel for Release of Model Drug. Sci Rep 2019; 9:9325. [PMID: 31249333 PMCID: PMC6597533 DOI: 10.1038/s41598-019-45761-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 06/05/2019] [Indexed: 01/28/2023] Open
Abstract
Controlling the rate of release of molecules from a hydrogel is of high interest for various drug delivery systems and medical devices. A strategy to alter the release profiles of soluble and poorly soluble active ingredients from hydrogels can be to combine the hydrogel forming ability of alginate with the inclusion forming ability of cyclodextrins (CyD). Here, β-CyD was grafted to alginate in a three-step synthesis using periodate oxidation, reductive amination and copper(I)-catalyzed azide-alkyne cycloaddition. A grafting degree of 4.7% mol β-CyD/mol sugar residues was obtained. The grafting degree was controlled by varying the reaction parameters where the amount of linker used in reductive amination was especially influential. Ca-alginate gel beads grafted with β-CyD showed increased uptake of the model molecule methyl orange. Release experiments showed that the grafted material had a prolonged release of methyl orange and an increased total amount of released methyl orange. These results show that the β-CyD grafted alginate is still able to form a hydrogel while the grafted cyclodextrins retain their ability to form inclusion complex with methyl orange. Further testing should be done with this system to investigate capability for drug delivery applications.
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Affiliation(s)
- Line Aa Omtvedt
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway
| | - Marianne Ø Dalheim
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway
| | - Thorbjørn T Nielsen
- Department of Chemistry and Bioscience, Aalborg University (AAU), 9220, Aalborg, Denmark
| | - Kim L Larsen
- Department of Chemistry and Bioscience, Aalborg University (AAU), 9220, Aalborg, Denmark
| | - Berit L Strand
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway
| | - Finn L Aachmann
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway.
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7
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Cyclodextrin-Steroid Interactions and Applications to Pharmaceuticals, Food, Biotechnology and Environment. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2018. [DOI: 10.1007/978-3-319-76162-6_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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8
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Maestrelli F, Bragagni M, Mura P. Advanced formulations for improving therapies with anti-inflammatory or anaesthetic drugs: A review. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.09.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Le HT, Jeon HM, Lim CW, Kim TW. Synthesis, Cytotoxicity, and Phase-Solubility Study of Cyclodextrin Click Clusters. J Pharm Sci 2014; 103:3183-9. [DOI: 10.1002/jps.24107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 06/28/2014] [Accepted: 07/08/2014] [Indexed: 11/05/2022]
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10
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Hernandez-Montelongo J, Naveas N, Degoutin S, Tabary N, Chai F, Spampinato V, Ceccone G, Rossi F, Torres-Costa V, Manso-Silvan M, Martel B. Porous silicon-cyclodextrin based polymer composites for drug delivery applications. Carbohydr Polym 2014; 110:238-52. [DOI: 10.1016/j.carbpol.2014.04.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 03/19/2014] [Accepted: 04/02/2014] [Indexed: 10/25/2022]
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11
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6-Triazolyl-6-deoxy-β-cyclodextrin derivatives: synthesis, cellular toxicity, and phase-solubility study. Carbohydr Res 2014; 391:22-8. [PMID: 24751856 DOI: 10.1016/j.carres.2014.03.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/23/2014] [Accepted: 03/18/2014] [Indexed: 11/21/2022]
Abstract
Heptakis{6-(4-hydroxymethyl-1H-[1,2,3]triazol-1-yl)-6-deoxy}-β-cyclodextrin (HTβCD) and heptakis{6-(4-sulfonylmethyl-1H-[1,2,3]triazol-1-yl)-6-deoxy}-β-cyclodextrin (STβCD) were prepared using copper(I)-catalyzed azide-alkyne cycloaddition between 6-azido-6-deoxy-β-CD and one of two alkynes, propargyl alcohol, and sodium propargyl sulfonate, respectively. The structures of HTβCD and STβCD were characterized by NMR techniques. NMR interpretations and computer modeling suggested that the limited freedom of rotation of the triazole moieties keeps HTβCD and STβCD rigid and compact. Water solubility tests of HTβCD and STβCD showed that the minimum water solubility of HTβCD and STβCD is at least 20times higher than that of β-CD. MTT assay showed that HTβCD and STβCD did not influence the cell viability under 1mM. A phase-solubility study of prednisolone with the CD derivatives showed increased solubility of prednisolone in the presence of increasing concentrations of HTβCD and STβCD.
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Holm R, Østergaard J, Schönbeck C, Jensen H, Shi W, Peters GH, Westh P. Determination of stability constants of tauro- and glyco-conjugated bile salts with the negatively charged sulfobutylether-β-cyclodextrin: comparison of affinity capillary electrophoresis and isothermal titration calorimetry and thermodynamic analysis of the interaction. J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0287-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Kurkov SV, Madden DE, Carr D, Loftsson T. The Effect of Parenterally Administered Cyclodextrins on the Pharmacokinetics of Coadministered Drugs. J Pharm Sci 2012; 101:4402-8. [DOI: 10.1002/jps.23329] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 09/03/2012] [Accepted: 09/07/2012] [Indexed: 11/11/2022]
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14
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Østergaard J, Jensen H, Holm R. Affinity capillary electrophoresis method for investigation of bile salts complexation with sulfobutyl ether-β-cyclodextrin. J Sep Sci 2012; 35:2764-72. [DOI: 10.1002/jssc.201200502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 06/20/2012] [Accepted: 06/21/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Jesper Østergaard
- Department of Pharmacy; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - Henrik Jensen
- Department of Pharmacy; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - René Holm
- Department of Pharmacy; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
- Preformulation; H. Lundbeck A/S Valby Denmark
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15
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Holm R, Schönbeck C, Askjaer S, Jensen H, Westh P, Østergaard J. Complexation of tauro- and glyco-conjugated bile salts with α-cyclodextrin and hydroxypropyl-α-cyclodextrin studied by affinity capillary electrophoresis and molecular modelling. J Sep Sci 2011; 34:3221-30. [DOI: 10.1002/jssc.201100479] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 07/14/2011] [Accepted: 08/11/2011] [Indexed: 11/06/2022]
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16
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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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17
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Merzlikine A, Abramov YA, Kowsz SJ, Thomas VH, Mano T. Development of machine learning models of β-cyclodextrin and sulfobutylether-β-cyclodextrin complexation free energies. Int J Pharm 2011; 418:207-16. [PMID: 21497190 DOI: 10.1016/j.ijpharm.2011.03.065] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 03/16/2011] [Accepted: 03/24/2011] [Indexed: 12/13/2022]
Abstract
A new set of 142 experimentally determined complexation constants between sulfobutylether-β-cyclodextrin and diverse organic guest molecules, and 78 observations reported in literature, were used for the development of the QSPR models by the two machine learning regression methods - Cubist and Random Forest. Similar models were built for β-cyclodextrin using the 233-compound dataset available in the literature. These results demonstrate that the machine learning regression methods can successfully describe the complex formation between organic molecules and β-cyclodextrin or sulfobutylether-β-cyclodextrin. In particular, the root mean square errors for the test sets predictions by the best models are low, 1.9 and 2.7kJ/mol, respectively. The developed QSPR models can be used to predict the solubilizing effect of cyclodextrins and to help prioritizing experimental work in drug discovery.
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Affiliation(s)
- Alexei Merzlikine
- Department of Pharmaceutical Sciences, Pfizer Inc., Groton, CT, USA.
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18
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Comparison between 2-hydroxypropyl-β-cyclodextrin and 2-hydroxypropyl-γ-cyclodextrin for inclusion complex formation with danazol. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-010-9917-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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19
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Thi TD, Nauwelaerts K, Froeyen M, Baudemprez L, Van Speybroeck M, Augustijns P, Annaert P, Martens J, Van Humbeeck J, Van Den Mooter G. Comparison of the Complexation between Methylprednisolone and Different Cyclodextrins in Solution by 1H-NMR and Molecular Modeling Studies. J Pharm Sci 2010; 99:3863-73. [DOI: 10.1002/jps.22227] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Bílková E, Sedlák M, Dvořák B, Ventura K, Knotek P, Beneš L. Prednisolone-α-cyclodextrin-star PEG polypseudorotaxanes with controlled drug delivery properties. Org Biomol Chem 2010; 8:5423-30. [DOI: 10.1039/c0ob00039f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Malaekeh-Nikouei B, Sajadi Tabassi SA, Ashari H, Gholamzadeh A. Evaluation the effect of cyclodextrin complexation on aqueous solubility of fluorometholone to achieve ophthalmic solution. J INCL PHENOM MACRO 2009. [DOI: 10.1007/s10847-009-9590-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Moon JY, Jung HJ, Moon MH, Chung BC, Choi MH. Inclusion complex-based solid-phase extraction of steroidal compounds with entrapped beta-cyclodextrin polymer. Steroids 2008; 73:1090-7. [PMID: 18547597 DOI: 10.1016/j.steroids.2008.04.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 04/14/2008] [Accepted: 04/15/2008] [Indexed: 11/19/2022]
Abstract
Although the hydrophobic interaction-based solid-phase extraction (SPE) has been widely used, the extraction yields of steroids including androgens, estrogens, and corticoids were slightly different along with the physical and chemical properties of each molecule. A new SPE technique based on the formation of an inclusion complex with beta-cyclodextrin (betaCD) has been achieved for comprehensive sample purification in mass spectrometric analysis of 45 endogenous or synthetic androgens, 11 endogenous estrogens, and 21 corticoids. A copolymer of betaCD with epichlorohydrin was prepared by a cross-linking reaction followed by entrapment with 0.3M CaCl(2) to yield an improved SPE sorbent and the hydrolyzed urine samples were applied for purification. Steroidal compounds tested on the entrapped betaCD polymer were extracted with tetrahydrofuran and the overall recoveries ranged from 82% to 112% for 77 steroids in urine. Especially, the hydroxylated estrogens showed an excellent binding capacity (96-116% recovery) to betaCD through hydrogen bonding between their phenolic hydroxyl and exterior hydroxyl groups. A comparison between SPE methods with betaCD and Oasis HLB as a conventional cartridge showed that the extraction efficiency of polar steroids was significantly increased in the betaCD experiment, which has no connection with different polarity of steroid molecules. Due to its multi-functional mechanism derived from molecular inclusion and chemical interactions, this new SPE sorbent resulted in better selectivity and extraction efficiency than that obtained using the conventionally used hydrophobicity-based SPE method.
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Affiliation(s)
- Ju-Yeon Moon
- Life Sciences Division, Korea Institute of Science and Technology, 39-1 Hawolkok-dong, Seoul 136-791, Korea; Deparment of Chemistry, Yonsei University, 134 Sinchon-dong, Seoul 120-749, Korea
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23
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Caballero J, Zamora C, Aguayo D, Yañez C, González-Nilo FD. Study of the interaction between progesterone and beta-cyclodextrin by electrochemical techniques and steered molecular dynamics. J Phys Chem B 2008; 112:10194-201. [PMID: 18665626 DOI: 10.1021/jp8006766] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The interaction of progesterone with beta-cyclodextrin (beta-CD) was studied by differential pulse polarography. The aim of the present work was to study the effect of beta-CD on the electrochemical behavior of progesterone in aqueous solution and also to analyze the molecular interactions involved in formation of the inclusion complex. The complex with stoichiometry of 1:1 was thermodynamically characterized. In addition, steered molecular dynamics (SMD) was used to investigate the energetic properties of formation of the inclusion complex along four different pathways (reaction coordinates), considering two possible orientations. From multiple trajectories along these pathways, the potentials of mean force for formation of the beta-CD progesterone inclusion complex were calculated. The energy analysis was in good agreement with the experimental results. In the beta-CD progesterone inclusion complex, a large portion of the steroid skeleton is included in the beta-CD cavity. The lowest energy was found when the D-ring of the guest molecule is located near the secondary hydroxyls of the beta-CD cavity. In the most probable orientation, one intermolecular hydrogen bond is formed between the O of the C-20 keto group of the progesterone and a secondary hydroxyl of the beta-CD.
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Affiliation(s)
- Julio Caballero
- Centro de Bioinformática y Simulación Molecular, Universidad de Talca, 2 Norte 685, Casilla 721, Talca, Chile
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Woldum HS, Larsen KL, Madsen F. Cyclodextrin controlled release of poorly water-soluble drugs from hydrogels. Drug Deliv 2008; 15:69-80. [PMID: 18197526 DOI: 10.1080/10717540701829267] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
The effect of 2-hydroxypropyl-beta-cyclodextrin and gamma-cyclodextrin on the release of ibuprofen, ketoprofen and prednisolone was studied. Stability constants calculated for inclusion complexes show size dependence for complexes with both cyclodextrins. Hydrogels were prepared by ultraviolet irradiation and release of each model drug was studied. For drugs formulated using cyclodextrins an increase in the achievable concentration and in the release from hydrogels was obtained due to increased solubility, although the solubility of all gamma-cyclodextrin complexes was limited. The load also was increased by adjusting pH for the acidic drugs and this exceeds the increase obtained with gamma-cyclodextrin addition.
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Affiliation(s)
- Henriette Sie Woldum
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Aalborg, Denmark
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Brewster ME, Loftsson T. Cyclodextrins as pharmaceutical solubilizers. Adv Drug Deliv Rev 2007; 59:645-66. [PMID: 17601630 DOI: 10.1016/j.addr.2007.05.012] [Citation(s) in RCA: 1262] [Impact Index Per Article: 74.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Accepted: 05/10/2007] [Indexed: 10/23/2022]
Abstract
Cyclodextrins are useful functional excipients that have enjoyed widespread attention and use. The basis for this popularity from a pharmaceutical standpoint, is the ability of these materials to interact with poorly water-soluble drugs and drug candidates resulting in an increase in their apparent water solubility. The mechanism for this solubilization is rooted in the ability of cyclodextrin to form non-covalent dynamic inclusion complexes in solution. Other solubilizing attribute may include the ability to form non-inclusion based complexes, the formation of aggregates and related domains and the ability of cyclodextrins to form and stabilize supersaturated drug solutions. The increase in solubility also can increase dissolution rate and thus improve the oral bioavailability of BCS Class II and IV materials. A number of cyclodextrin-based products have reached the market based on their ability to camouflage undesirable physicochemical properties. This review is intended to give a general background to the use of cyclodextrin as solubilizers as well as highlight kinetic and thermodynamic tools and parameters useful in the study of drug solubilization by cyclodextrins.
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Affiliation(s)
- Marcus E Brewster
- Chemical and Pharmaceutical Development, Johnson & Johnson Pharmaceutical Research and Development, Janssen Pharmaceutica, Turnhoutseweg 30, B-2340 Beerse, Belgium.
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Affiliation(s)
- R K Gilpin
- Brehm Research Laboratory, University Park, Wright State University, Fairborn, Ohio 45324-2031, USA
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27
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Inclusion complexes of fusidic acid and three structurally related compounds with cyclodextrins. J INCL PHENOM MACRO 2007. [DOI: 10.1007/s10847-006-9198-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tongiani S, Velde DV, Ozeki T, Stella VJ. Sulfoalkyl Ether-Alkyl Ether Cyclodextrin Derivatives, their Synthesis, NMR Characterization, and Binding of 6α-Methylprednisolone. J Pharm Sci 2005; 94:2380-92. [PMID: 16200617 DOI: 10.1002/jps.20367] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The objective of this study is to see if random alkyl ethers of various sulfoalkyl ether cyclodextrins can be synthesized and characterized. The purpose of the alkylation was to test the hypothesis that an increase in the "height" of a cyclodextrins cavity would help in the binding/complexation of larger more structurally complex molecules. The synthesis of new cyclodextrin derivatives comprising a mixture of sulfoalkyl ether and alkyl ether substituents on the same cyclodextrin ring was performed in aqueous alkaline solutions using various sultones and alkylsulfates. The method presented provided an easy and efficient way to modify cyclodextrins avoiding the use of organic solvents and high quantities of alkylating agents and could be carried out in either a two step or "one pot" single step process. Purification was by neutralization followed by ultrafiltration. The derivatives were characterized by 1D, ((1)H and (13)C), and a 2D NMR technique (HMQC, Heteronuclear Multiple Quantum Coherence). The combination of these techniques allowed an analysis of the degree of substitution and the site of substitution on the cyclodextrin (CD) nucleus. For both beta- and gamma-CD, sulfoakylation was preferred on the 2 > 3 > 6 hydroxyls while alkylation was preferred 6 > 2 > 3. Due to the simultaneous presence of short alkyl ether chains and negatively charged sulfoalkyl ether chains, these mixed water-soluble cyclodextrin derivatives, especially those of gamma-cyclodextrin, should be able to bind more complex drugs. The improved binding capacity of these new modified CDs with the model drug 6alpha-methylprednisolone is reported.
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Affiliation(s)
- Serena Tongiani
- Department of Pharmaceutical Chemistry, University of Kansas 2095 Constant Avenue, Lawrence, Kansas 66047, USA
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