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Leyla C, Fatiha M, Leila N, Rabah O. Solubility and Antioxidant Activity of 1,2-Dihydro-2-Methyl-2-Phenyl-3H-Indole-3-One-1-Oxyl Hosted at Randomly Methylated-Βétacyclodextrin: A Computational Investigation. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2022.2146148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- Chekatti Leyla
- Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, Laboratory of Computational Chemistry and Nanostructures, University of 8 Mai 1945, Guelma, Algeria
- Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, Laboratory of Industrial Analysis and Materials Engineering, University of 8 Mai 1945, Guelma, Algeria
| | - Madi Fatiha
- Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, Laboratory of Computational Chemistry and Nanostructures, University of 8 Mai 1945, Guelma, Algeria
| | - Nouar Leila
- Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, Laboratory of Computational Chemistry and Nanostructures, University of 8 Mai 1945, Guelma, Algeria
| | - Oumeddour Rabah
- Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, Laboratory of Industrial Analysis and Materials Engineering, University of 8 Mai 1945, Guelma, Algeria
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Rehman T, Khirallah J, Demirel E, Howell J, Vlaisavljevich E, Yuksel Durmaz Y. Development of Acoustically Active Nanocones Using the Host-Guest Interaction as a New Histotripsy Agent. ACS OMEGA 2019; 4:4176-4184. [PMID: 31459627 PMCID: PMC6649115 DOI: 10.1021/acsomega.8b02922] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 02/14/2019] [Indexed: 05/04/2023]
Abstract
Histotripsy is a noninvasive and nonthermal ultrasound ablation technique, which mechanically ablates the tissues using very short, focused, high-pressured ultrasound pulses to generate dense cavitating bubble cloud. Histotripsy requires large negative pressures (≥28 MPa) to generate cavitation in the target tissue, guided by real-time ultrasound imaging guidance. The high cavitation threshold and reliance on real-time image guidance are potential limitations of histotripsy, particularly for the treatment of multifocal or metastatic cancers. To address these potential limitations, we have recently developed nanoparticle-mediated histotripsy (NMH) where perfluorocarbon (PFC)-filled nanodroplets (NDs) with the size of ∼200 nm were used as cavitation nuclei for histotripsy, as they are able to significantly lower the cavitation threshold. However, although NDs were shown to be an effective histotripsy agent, they pose several issues. Their generation requires multistep synthesis, they lack long-term stability, and determination of PFC concentration in the treatment dose is not possible. In this study, PFC-filled nanocones (NCs) were developed as a new generation of histotripsy agents to address the mentioned limitations of NDs. The developed NCs represent an inclusion complex of methylated β-cyclodextrin as a water-soluble analog of β-cyclodextrin and perfluorohexane (PFH) as more effective PFC derivatives for histotripsy. Results showed that NCs are easy to produce, biocompatible, have a size <50 nm, and have a quantitative complexation that allows us to directly calculate the PFH amount in the used NC dose. Results further demonstrated that NCs embedded into tissue-mimicking phantoms generated histotripsy cavitation "bubble clouds" at a significantly lower transducer amplitude compared to control phantoms, demonstrating the ability of NCs to function as effective histotripsy agents for NMH.
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Affiliation(s)
- Tanzeel
Ur Rehman
- Department
of Biomedical Engineering, School of Engineering and Natural
Sciences, and Regenerative and Restorative Medicine Research Center (REMER), Istanbul Medipol University, Istanbul 34810, Turkey
| | - Jennifer Khirallah
- Department
of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg 24061, United States
| | - Erhan Demirel
- Department
of Biomedical Engineering, School of Engineering and Natural
Sciences, and Regenerative and Restorative Medicine Research Center (REMER), Istanbul Medipol University, Istanbul 34810, Turkey
| | - Justin Howell
- Department
of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg 24061, United States
| | - Eli Vlaisavljevich
- Department
of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg 24061, United States
- E-mail: (E.V.)
| | - Yasemin Yuksel Durmaz
- Department
of Biomedical Engineering, School of Engineering and Natural
Sciences, and Regenerative and Restorative Medicine Research Center (REMER), Istanbul Medipol University, Istanbul 34810, Turkey
- E-mail: (Y.Y.D.)
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Tóth G, Jánoska Á, Szabó ZI, Völgyi G, Orgován G, Szente L, Noszál B. Physicochemical characterisation and cyclodextrin complexation of erlotinib. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1117083] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Ádám Jánoska
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Zoltán-István Szabó
- Department of Drugs Industry and Pharmaceutical Management, University of Medicine and Pharmacy, Tîrgu Mures, Romania
| | - Gergely Völgyi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Gábor Orgován
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin Research & Development Ltd, Budapest, Hungary
| | - Béla Noszál
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
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Celik SE, Ozyürek M, Tufan AN, Güçlü K, Apak R. Spectroscopic study and antioxidant properties of the inclusion complexes of rosmarinic acid with natural and derivative cyclodextrins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:1615-24. [PMID: 21377406 DOI: 10.1016/j.saa.2011.02.017] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 01/25/2011] [Accepted: 02/07/2011] [Indexed: 05/30/2023]
Abstract
Measurement of total antioxidant activity/capacity of polyphenols in various solvent media necessitates the use of cyclodextrins to solubilize lipophilic antioxidants of poor aqueous solubility. The inclusion complexes of the slightly water soluble antioxidant, rosmarinic acid (RA), with α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), 2-hydroxypropyl-β-cyclodextrin (HP-β-CD), 2-hydroxyethyl-β-cyclodextrin (HE-β-CD), and methyl-β-cyclodextrin (M-β-CD) were investigated for the first time. The effect of cyclodextrins (CDs) on the spectral features of RA was measured in aqueous medium using UV-vis and steady-state fluorescence techniques by varying the concentrations of CDs. The molar stoichiometry of RA-CD inclusion complexes was verified as 1:1, and the formation constants of the complexes were determined from Benesi-Hildebrand equation using fluorescence spectroscopic data. Among the CDs, maximum inclusion ability was measured in the case of M-β-CD followed by HP-β-CD, HE-β-CD, β-CD and α-CD. Solid inclusion complexes were prepared by freeze drying, and their functional groups were analyzed by IR spectroscopy. Antioxidant capacity of CD-complexed rosmarinic acid was measured to be higher than that of the lone hydroxycinnamic acid by the CUPric Reducing Antioxidant Capacity (CUPRAC) method. The mechanism of the TAC increase was interpreted as the stabilization of the 1-e oxidized o-catechol moiety of RA by enhanced intramolecular H-bonding in a hydrophobic environment provided by CDs, mostly by M-β-CD.
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Affiliation(s)
- Saliha Esin Celik
- Department of Chemistry, Faculty of Engineering, Istanbul University, Avcilar 34320, Istanbul, Turkey
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Simultaneous total antioxidant capacity assay of lipophilic and hydrophilic antioxidants in the same acetone-water solution containing 2% methyl-beta-cyclodextrin using the cupric reducing antioxidant capacity (CUPRAC) method. Anal Chim Acta 2008; 630:28-39. [PMID: 19068323 DOI: 10.1016/j.aca.2008.09.057] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2008] [Revised: 09/19/2008] [Accepted: 09/23/2008] [Indexed: 11/22/2022]
Abstract
Antioxidants are health beneficial compounds that can protect cells from the damage caused by unstable molecules known as reactive oxygen species (ROS). This work reports the capacity assay of both lipophilic and hydrophilic antioxidants simultaneously, by making use of their 'host-guest' complexes with methyl-beta-cyclodextrin (M-beta-CD), a cyclic oligosaccharide, in acetonated aqueous medium using the cupric reducing antioxidant capacity (CUPRAC) method. Thus the order of antioxidant potency of various compounds irrespective of their lipophilicity could be established in the same solvent medium. M-beta-CD was introduced as the water solubility enhancer for lipophilic antioxidants. Two percent M-beta-CD (w/v) in an acetone-H(2)O (9:1, v/v) mixture was found to sufficiently solubilize beta-carotene, lycopene, vitamin E, vitamin C, synthetic antioxidants and other phenolic antioxidants. This assay was validated through linearity, additivity, precision, and recovery. The validation results demonstrate that the CUPRAC assay is reliable and robust. In acetonated aqueous solution of M-beta-CD, only CUPRAC and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays were capable of measuring carotenoids together with hydrophilic antioxidants. The CUPRAC antioxidant capacities of a wide range of polyphenolics and flavonoids were experimentally reported in this work as trolox equivalent antioxidant capacity (TEAC) in the CUPRAC assay, and compared to those found by reference methods, ABTS/horseradish peroxidase (HRP)-H(2)O(2) and ferric reducing antioxidant power (FRAP) assays.
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Influence of inclusion complexation with β-cyclodextrin on the photostability of selected imidazoline-derived drugs. J INCL PHENOM MACRO 2008. [DOI: 10.1007/s10847-008-9493-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Çelik S, Özyürek M, Güçlü K, Apak R. CUPRAC total antioxidant capacity assay of lipophilic antioxidants in combination with hydrophilic antioxidants using the macrocyclic oligosaccharide methyl β-cyclodextrin as the solubility enhancer. REACT FUNCT POLYM 2007. [DOI: 10.1016/j.reactfunctpolym.2007.07.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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