1
|
Fekete-Kertész I, Berkl Z, Buda K, Fenyvesi É, Szente L, Molnár M. Quorum quenching effect of cyclodextrins on the pyocyanin and pyoverdine production of Pseudomonas aeruginosa. Appl Microbiol Biotechnol 2024; 108:271. [PMID: 38517512 PMCID: PMC10959793 DOI: 10.1007/s00253-024-13104-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 02/27/2024] [Accepted: 03/05/2024] [Indexed: 03/24/2024]
Abstract
Various virulence determinants in Pseudomonas aeruginosa are regulated by the quorum sensing (QS) network producing and releasing signalling molecules. Two of these virulence determinants are the pyocyanin and pyoverdine, which interfere with multiple cellular functions during infection. The application of QS-inhibiting agents, such as cyclodextrins (CDs), appears to be a promising approach. Further to method development, this research tested in large-volume test systems the effect of α- and β-CD (ACD, BCD) at 1, 5, and 10 mM concentrations on the production of pyocyanin in the P. aeruginosa model system. The concentration and time-dependent quorum quenching effect of native CDs and their derivatives on pyoverdine production was tested in a small-volume high-throughput system. In the large-volume system, both ACD and BCD significantly inhibited pyocyanin production, but ACD to a greater extent. 10 mM ACD resulted in 58% inhibition, while BCD only ~40%. Similarly, ACD was more effective in the inhibition of pyoverdine production; nevertheless, the results of RMANOVA demonstrated the significant efficiency of both ACD and BCD, as well as their derivatives. Both the contact time and the cyclodextrin treatments significantly influenced pyoverdine production. In this case, the inhibitory effect of ACD after 48 h at 12.5 mM was 57%, while the inhibitory effect of BCD and its derivatives was lower than 40%. The high-level significant inhibition of both pyocyanin and pyoverdine production by ACD was detectable. Consequently, the potential value of CDs as QS inhibitors and the antivirulence strategy should be considered. KEYPOINTS: • Applicability of a simplified method for quantification of pyocyanin production was demonstrated. • The cyclodextrins significantly affected the pyocyanin and pyoverdine production. • The native ACD exhibited the highest attenuation in pyoverdine production.
Collapse
Affiliation(s)
- Ildikó Fekete-Kertész
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary
| | - Zsófia Berkl
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary
| | - Kata Buda
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos u. 7., Budapest, H-1097, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos u. 7., Budapest, H-1097, Hungary
| | - Mónika Molnár
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem rkp. 3., Budapest, H-1111, Hungary.
| |
Collapse
|
2
|
Puskás I, Szente L, Szőcs L, Fenyvesi É. Recent List of Cyclodextrin-Containing Drug Products. Period Polytech Chem Eng 2023. [DOI: 10.3311/ppch.21222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The number of the cyclodextrin-containing drug formulations on the market has been continuously growing since the first drug (prostaglandin E1 formulated with α-cyclodextrin) was launched in Japan in 1976. We have collected a list of drugs from various sources available on the internet to find 130 approved pharmaceutical ingredients formulated with either parent cyclodextrins or their hydroxypropyl, sulfobutyl, random methylated or sulfolipo derivatives. We have sorted the drug products according to the cavity size of the cyclodextrins, the administration route and dosage forms.
Collapse
|
3
|
Haimhoffer Á, Vas A, Árvai G, Fenyvesi É, Jicsinszky L, Budai I, Bényei A, Regdon G, Rusznyák Á, Vasvári G, Váradi J, Bácskay I, Vecsernyés M, Fenyvesi F. Investigation of the Drug Carrier Properties of Insoluble Cyclodextrin Polymer Microspheres. Biomolecules 2022; 12:biom12070931. [PMID: 35883488 PMCID: PMC9313285 DOI: 10.3390/biom12070931] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/18/2022] [Accepted: 06/28/2022] [Indexed: 01/27/2023] Open
Abstract
The investigation of the usability of solid insoluble β-cyclodextrin polymers (βCDP) in micro-sized, controlled drug delivery systems has only recently attracted interest. Our aim was to form complexes with poorly soluble active pharmaceutical ingredients (APIs) with two types of βCDP for drug delivery applications. Solid insoluble cyclodextrin polymer of irregular shape (βCDPIS) and cyclodextrin microbeads (βCDPB) were used in the experiments. Morphology, surface area, size distribution and swelling capacity of carriers were investigated. We created complexes with two APIs, curcumin and estradiol, and applied powder X-ray diffraction, FTIR and thermal analysis (TGA/DSC) to prove the complexation. Finally, the dissolution, biocompatibility and permeation of APIs on Caco-2 cells were investigated. The size of the beads was larger than 100 µm, their shape was spherical and surfaces were smooth; while the βCDPIS particles were around 4 µm with irregular shape and surface. None of the polymers showed any cytotoxic effect on Caco-2 cells. Both carriers were able to extract curcumin and estradiol from aqueous solutions, and the dissolution test showed prolonged estradiol release. Caco-2 permeability tests were in accordance with the complexation abilities and dissolution of the complexes. This study offers useful data for further pharmaceutical applications of insoluble cyclodextrin polymers.
Collapse
Affiliation(s)
- Ádám Haimhoffer
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, H-4032 Debrecen, Hungary
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Alexandra Vas
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
| | - Gabriella Árvai
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin R & D Laboratory Ltd., Illatos St. 7, H-1097 Budapest, Hungary;
| | - László Jicsinszky
- Department of Drug Science and Technology, University of Turin, Via P. Giuria 9, 10125 Turin, Italy;
| | - István Budai
- Faculty of Engineering, University of Debrecen, Ótemető Street 2-4, H-4028 Debrecen, Hungary;
| | - Attila Bényei
- Department of Physical Chemistry, University of Debrecen, Egyetem Sqr. 1, H-4032 Debrecen, Hungary;
| | - Géza Regdon
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary;
| | - Ágnes Rusznyák
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, H-4032 Debrecen, Hungary
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Gábor Vasvári
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
| | - Judit Váradi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.H.); (A.V.); (G.Á.); (Á.R.); (G.V.); (J.V.); (I.B.); (M.V.)
- Correspondence:
| |
Collapse
|
4
|
Szente L, Renkecz T, Sirok D, Stáhl J, Hirka G, Puskás I, Sohajda T, Fenyvesi É. Comparative bioavailability study following a single dose intravenous and buccal administration of remdesivir in rabbits. Int J Pharm 2022; 620:121739. [PMID: 35421532 PMCID: PMC8996499 DOI: 10.1016/j.ijpharm.2022.121739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 12/04/2022]
Abstract
As remdesivir, the first FDA-approved drug for SARS-CoV-2 infection, can be used only for hospitalized patients due to intravenous administration, there is an urgent need of effective oral antiviral formulations to be used at early stage of infection in an outpatient setting. The present paper reports on the comparative pharmacokinetics of the electrospun nanofiber remdesivir/sulfobutyl ether beta-cyclodextrin formulation after intravenous and buccal administration. It was postulated that oral transmucosal administration avoids remdesivir from metabolic transformation and intact remdesivir can be detected in plasma, but only the active metabolite GS-441524 could be experimentally detected at a significantly lower plasma level, than that provided by the intravenous route. In buccally treated animals, the metabolite GS-441524 appeared only at 1 h after treatment, while in intravenously treated animals, GS-441524 was possible to quantify even at the first time-point of blood collection. Further optimization of formulation is required to improve pharmacokinetics of remdesivir-sulfobutyl ether beta-cyclodextrin formulation upon buccal administration.
Collapse
Affiliation(s)
- Lajos Szente
- CycloLab Cyclodextrin R&D Laboratory Ltd, H-1097 Budapest, Illatos út 7, Hungary
| | - Tibor Renkecz
- "Toxi-Coop" Toxicological Research Center, H-1122 Budapest, Magyar Jakobinusok tere 4/B, Hungary
| | - Dávid Sirok
- "Toxi-Coop" Toxicological Research Center, H-1122 Budapest, Magyar Jakobinusok tere 4/B, Hungary
| | - János Stáhl
- "Toxi-Coop" Toxicological Research Center, H-1122 Budapest, Magyar Jakobinusok tere 4/B, Hungary
| | - Gábor Hirka
- "Toxi-Coop" Toxicological Research Center, H-1122 Budapest, Magyar Jakobinusok tere 4/B, Hungary
| | - István Puskás
- CycloLab Cyclodextrin R&D Laboratory Ltd, H-1097 Budapest, Illatos út 7, Hungary
| | - Tamás Sohajda
- CycloLab Cyclodextrin R&D Laboratory Ltd, H-1097 Budapest, Illatos út 7, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd, H-1097 Budapest, Illatos út 7, Hungary.
| |
Collapse
|
5
|
Fenyvesi É, Sohajda T. Cyclodextrin-enabled green environmental biotechnologies. Environ Sci Pollut Res Int 2022; 29:20085-20097. [PMID: 35064478 DOI: 10.1007/s11356-021-18176-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Most of the organic compounds contaminating the environment can form inclusion complexes with cyclodextrins resulting in enhanced solubility (a benefit in soil remediation) or just the opposite: reduced mobility by sorption (a benefit in wastewater treatment). Combining biotechnologies with cyclodextrin, a renewable and biodegradable material, green environmental technologies of high efficiency were developed. For instance, the cyclodextrin-enabled soil washing/flushing technologies combined with bioremediation have been demonstrated in full-scale field experiments. The efficiency of tertiary wastewater treatment by sorption of non-biodegradable xenobiotics, such as residual pharmaceutics, was proved. The biofilm formation in fouling processes can be prevented or reduced either by applying cyclodextrin-based coatings or by manipulation of quorum sensing (bacterial communication) via capturing signal molecules.
Collapse
Affiliation(s)
- Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd, Budapest, Hungary.
| | - Tamás Sohajda
- CycloLab Cyclodextrin R&D Laboratory Ltd, Budapest, Hungary
| |
Collapse
|
6
|
Abstract
AbstractCyclodextrins are widely used in various fields including food industry. In this review, their role in high carbohydrate-containing, starchy foods are reviewed and discussed. Both the effects as functional ingredients affecting the structural properties of starch and as active ingredients slowing down starch digestion and, as a consequence, decreasing the glycaemic index of starchy foods are overviewed without considering the traditional applications as carriers and stabilisers of aroma and flavour, essential oils, polyunsaturated fatty acids, and other bioactive components to enrich foods, even if they are carbohydrate foods. The effect on starch metabolism is explained by the structural transformations caused by cyclodextrins on starch amylose and amylopectin. Several examples are shown how the technological and sensorial properties of bread, rice products, pasta, and other starchy foods are modified by cyclodextrin supplementation, and how the digestibility is changed resulting in reduced glycaemic and insulinaemic effects.
Collapse
Affiliation(s)
- É. Fenyvesi
- CycloLab Cyclodextrin Research and Development Laboratory Ltd., Illatos str. 7, 1097 Budapest, Hungary
| | - L. Szente
- CycloLab Cyclodextrin Research and Development Laboratory Ltd., Illatos str. 7, 1097 Budapest, Hungary
| |
Collapse
|
7
|
Rusznyák Á, Malanga M, Fenyvesi É, Szente L, Váradi J, Bácskay I, Vecsernyés M, Vasvári G, Haimhoffer Á, Fehér P, Ujhelyi Z, Nagy Jr. B, Fejes Z, Fenyvesi F. Investigation of the Cellular Effects of Beta- Cyclodextrin Derivatives on Caco-2 Intestinal Epithelial Cells. Pharmaceutics 2021; 13:pharmaceutics13020157. [PMID: 33504045 PMCID: PMC7911713 DOI: 10.3390/pharmaceutics13020157] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 01/07/2023] Open
Abstract
Cyclodextrins are widely used excipients for increasing water-solubility, delivery and bioavailability of lipophilic drugs. By using fluorescent cyclodextrin derivatives, we showed previously that cyclodextrins are able to enter Caco-2 intestinal cells by endocytosis, but the influence of different fluorescent labeling on the same cyclodextrin derivative has not been studied. The consequences of the cellular internalization of cyclodextrins have not been revealed yet either. The aims of this study were to compare the cellular internalization of fluorescein- and rhodamine-labeled (2-hydroxypropyl)-, (HPBCD) and randommethyl-β-cyclodextrins (RAMEB) and to investigate the intracellular effects of these derivatives on Caco-2 cells. Stimulation of the NF-kappa B pathway and autophagy and localization of these derivatives in lysosomes were tested. The endocytosis of these derivatives was examined by fluorescence microscopy and flow cytometry. Both fluorescein- and rhodamine-labeled derivatives entered the cells, therefore the type of the fluorescent labeling did not influence their internalization. Cyclodextrin pretreatment did not activate the translocation of the p65 subunit of the NF-kappa B heterodimer into the cell nuclei from the cytoplasm. After HPBCD or RAMEB treatment, formation of the autophagosomes did not increase compared to the control sample and at the same time these derivatives could be detected in lysosomes after internalization.
Collapse
Affiliation(s)
- Ágnes Rusznyák
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Milo Malanga
- Cyclolab Cyclodextrin R & D Laboratory Ltd., Illatos St. 7, H-1097 Budapest, Hungary; (M.M.); (É.F.); (L.S.)
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin R & D Laboratory Ltd., Illatos St. 7, H-1097 Budapest, Hungary; (M.M.); (É.F.); (L.S.)
| | - Lajos Szente
- Cyclolab Cyclodextrin R & D Laboratory Ltd., Illatos St. 7, H-1097 Budapest, Hungary; (M.M.); (É.F.); (L.S.)
| | - Judit Váradi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
| | - Gábor Vasvári
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Ádám Haimhoffer
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Pálma Fehér
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
| | - Zoltán Ujhelyi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
| | - Béla Nagy Jr.
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (B.N.J.); (Z.F.)
| | - Zsolt Fejes
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (B.N.J.); (Z.F.)
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; (Á.R.); (J.V.); (I.B.); (M.V.); (G.V.); (Á.H.); (P.F.); (Z.U.)
- Correspondence: ; Tel.: +36-52/411-717/54505
| |
Collapse
|
8
|
Nagy NZ, Varga Z, Mihály J, Domján A, Fenyvesi É, Kiss É. Highly Enhanced Curcumin Delivery Applying Association Type Nanostructures of Block Copolymers, Cyclodextrins and Polycyclodextrins. Polymers (Basel) 2020; 12:polym12092167. [PMID: 32971985 PMCID: PMC7570166 DOI: 10.3390/polym12092167] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/12/2020] [Accepted: 09/16/2020] [Indexed: 12/12/2022] Open
Abstract
The limited bioavailability of the highly hydrophobic natural compound, curcumin with wide range of beneficial bioactivity is still a challenge. Self-association type systems of polyethylene oxide-polypropylene oxide-polyethylene oxide block copolymers (Pluronic) were applied to enhance the aqueous solubility of curcumin. Comparison of four Pluronics (94, 105, 127,108) with different compositions led to the conclusion that solubilization capacity is maximum for Pluronic 105 with intermediate polarity (hydrophilic/lipophilic balance (HLB) = 15) possessing the optimum balance between capacity of hydrophobic core of the micelle and hydrophilic stabilizing shell of the associate. Curcumin concentration in aqueous solution was managed to increase 105 times up to 1-3 g/L applying Pluronic at 0.01 mol/L. Formation of a host-guest complex of cyclodextrin as another way of increasing the curcumin solubility was also tested. Comparing the(2-hydroxypropyl)-α, β and γ cyclodextrins (CD) with 6, 7 and 8 sugar units and their polymers (poly-α-CD, poly-β-CD, poly-γ-CD) the γ-CD with the largest cavity found to be the most effective in curcumin encapsulation approaching the g/L range of concentration. The polymer type of the CDs presented prolonged and pH dependent release of curcumin in the gastrointestinal (GI) system modelled by simulated liquids. This retarding effect of polyCD was also shown and can be used for tuning in the combined system of Pluronic micelle and polyCD where the curcumin release was slower than from the micelle.
Collapse
Affiliation(s)
- Nóra Zsuzsanna Nagy
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Budapest 112, PO Box 32, H-1518 Budapest, Hungary;
| | - Zoltán Varga
- Biological Nanochemistry Research Group, Institute of Materials and EnvironmentalChemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary; (Z.V.); (J.M.)
| | - Judith Mihály
- Biological Nanochemistry Research Group, Institute of Materials and EnvironmentalChemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary; (Z.V.); (J.M.)
| | - Attila Domján
- NMR Research Laboratory, Instrumentation Center, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary;
| | - Éva Fenyvesi
- CycloLab Cyclodextrin Research and Development Laboratory Ltd., Illatos út 7, H-1097 Budapest, Hungary;
| | - Éva Kiss
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Budapest 112, PO Box 32, H-1518 Budapest, Hungary;
- Correspondence:
| |
Collapse
|
9
|
Fenyvesi É, Barkács K, Gruiz K, Varga E, Kenyeres I, Záray G, Szente L. Removal of hazardous micropollutants from treated wastewater using cyclodextrin bead polymer - A pilot demonstration case. J Hazard Mater 2020; 383:121181. [PMID: 31541954 DOI: 10.1016/j.jhazmat.2019.121181] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 08/29/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Increasing amount of micropollutants such as drugs, cosmetics and nutritional supplements detected in surface waters represents increasing risk to humans and to the whole environment. These hazardous materials deriving mostly from wastewaters often cannot be effectively removed by conventional water treatment technologies due to their persistence. Some of the innovative technologies use specific sorbents for their removal. Cyclodextrin-based sorbents have already proved to be efficient in laboratory-scale experiments, but no pilot-plant scale demonstration has been performed so far. We are the first who applied this sorption-technology as a tertiary treatment in a pilot-plant scale operating, biomachine-type municipal wastewater treatment plant. As a result of the treatment 7 of 9 typical micropollutants (estradiol, ethinyl estradiol, estriol, diclofenac, ibuprofen, bisphenol A and cholesterol) were removed with >80% efficiency from effluent (reducing their concentration from ∼5 μg/L to <0.001-1 μg/L). GC-MS analysis of water samples showed that many of the micropollutants were removed from the water within a short time, demonstrating the high potential of the applied cyclodextrin-based sorbent in micropollutant removal. The effect-based testing also confirmed the efficiency. There was a correlation between sorption efficacies and binding constants of micropollutant/cyclodextrin inclusion complexes, showing that among others also inclusion complex formation of pollutants with cyclodextrin played important role in sorption mechanism.
Collapse
Affiliation(s)
- Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd., Budapest, Hungary.
| | - Katalin Barkács
- Cooperation Research Center of Environmental Sciences, Eötvös Loránd University, Budapest, Hungary
| | - Katalin Gruiz
- Budapest University of Technology and Economics, Budapest, Hungary
| | - Erzsébet Varga
- CycloLab Cyclodextrin R&D Laboratory Ltd., Budapest, Hungary
| | | | - Gyula Záray
- Cooperation Research Center of Environmental Sciences, Eötvös Loránd University, Budapest, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin R&D Laboratory Ltd., Budapest, Hungary
| |
Collapse
|
10
|
Trencsényi G, Kis A, Szabó JP, Ráti Á, Csige K, Fenyvesi É, Szente L, Malanga M, Méhes G, Emri M, Kertész I, Vecsernyés M, Fenyvesi F, Hajdu I. In vivo preclinical evaluation of the new 68Ga-labeled beta-cyclodextrin in prostaglandin E2 (PGE2) positive tumor model using positron emission tomography. Int J Pharm 2020; 576:118954. [PMID: 31935470 DOI: 10.1016/j.ijpharm.2019.118954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 12/11/2019] [Indexed: 01/05/2023]
Abstract
The cyclooxygenase-2 (COX-2)/prostaglandin E2 (PGE2) pathway plays an important role in tumor development and formation of metastases. It was earlier reported that cyclodextrin derivatives have a high affinity to form complexes with PGE2. Based on these results radiolabeled cyclodextrins - as new radiopharmaceuticals - may open a new pathway in the in vivo imaging and diagnosis of PGE2 positive tumors. The aims of this study were to synthetize the PGE2 specific 68Ga-labeled NODAGA-randomly methylated beta-cyclodextrin (68Ga-NODAGA-RAMEB) and investigate its tumor-targeting properties. NODAGA-RAMEB was labeled with Gallium-68 (68Ga), and the radiochemical purity (RCP%), partition coefficient (logP values), and in vitro-in vivo stability of 68Ga-NODAGA-RAMEB were determined. After intravenous injection of 68Ga-NODAGA-RAMEB the accumulation in organs and tissues was monitored in vivo by positron emission tomography (PET) and ex vivo by gamma counter in BxPC-3 and PancTu-1 tumor-bearing CB17 SCID mice. The RCP% of the newly synthesized 68Ga-NODAGA-RAMEB was higher than 98%. The molar activity was 15.34 ± 1.93 GBq/μmol. The logP of 68Ga labeled NODAGA-RAMEB was - 3.63 ± 0.04. Biodistribution studies showed high accumulation of 68Ga-NODAGA-RAMEB in PGE2 positive BxPC-3 tumors; approximately 15-20-fold higher radiotracer uptake was observed, than that of the background. 68Ga-labeled RAMEB is a promising radiotracer in PET diagnostics of PGE2 positive tumors.
Collapse
Affiliation(s)
- György Trencsényi
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary.
| | - Adrienn Kis
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Judit P Szabó
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Ágnes Ráti
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Katalin Csige
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097, Illatos St. 7, Budapest, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097, Illatos St. 7, Budapest, Hungary
| | - Milo Malanga
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097, Illatos St. 7, Budapest, Hungary
| | - Gábor Méhes
- Department of Pathology, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Miklós Emri
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - István Kertész
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - István Hajdu
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| |
Collapse
|
11
|
Váradi J, Hermenean A, Gesztelyi R, Jeney V, Balogh E, Majoros L, Malanga M, Fenyvesi É, Szente L, Bácskay I, Vecsernyés M, Fehér P, Ujhelyi Z, Vasvári G, Árvai I, Rusznyák Á, Balta C, Herman H, Fenyvesi F. Pharmacokinetic Properties of Fluorescently Labelled Hydroxypropyl-Beta-Cyclodextrin. Biomolecules 2019; 9:biom9100509. [PMID: 31546989 PMCID: PMC6843445 DOI: 10.3390/biom9100509] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/09/2019] [Accepted: 09/15/2019] [Indexed: 12/19/2022] Open
Abstract
2-Hydroxypropyl-beta-cyclodextrin (HPBCD) is utilized in the formulation of pharmaceutical products and recently orphan designation was granted for the treatment of Niemann–Pick disease, type C. The exact mechanism of HPBCD action and side effects are not completely explained. We used fluorescently labelled hydroxypropyl-beta-cyclodextrin (FITC-HPBCD) to study its pharmacokinetic parameters in mice and compare with native HPBCD data. We found that FITC-HPBCD has fast distribution and elimination, similar to HPBCD. Interestingly animals could be divided into two groups, where the pharmacokinetic parameters followed or did not follow the two-compartment, first-order kinetic model. Tissue distribution studies revealed, that a significant amount of FITC-HPBCD could be detected in kidneys after 60 min treatment, due to its renal excretion. Ex vivo fluorescent imaging showed that fluorescence could be measured in lung, liver, brain and spleen after 30 min of treatment. To model the interaction and cellular distribution of FITC-HPBCD in the wall of blood vessels, we treated human umbilical vein endothelial cells (HUVECs) with FITC-HPBCD and demonstrated for the first time that this compound could be detected in the cytoplasm in small vesicles after 30 min of treatment. FITC-HPBCD has similar pharmacokinetic to HPBCD and can provide new information to the detailed mechanism of action of HPBCD.
Collapse
Affiliation(s)
- Judit Váradi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Anca Hermenean
- Department of Histology, Faculty of Medicine, 'Vasile Goldiș' Western University of Arad, 86 Rebreanu Street, 310414 Arad, Romania
- Department of Biochemistry and Molecular Biology, University of Bucharest, Splaiul Independenței Street, no. 91-95, 050095, sector 5, Bucharest, Romania
| | - Rudolf Gesztelyi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Viktória Jeney
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, 4012 Debrecen, Hungary
| | - Enikő Balogh
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, 4012 Debrecen, Hungary
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Milo Malanga
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097 Illatos St. 7., Budapest, Hungary
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097 Illatos St. 7., Budapest, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097 Illatos St. 7., Budapest, Hungary
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Pálma Fehér
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Zoltán Ujhelyi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Gábor Vasvári
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
- University of Debrecen, Doctoral School of Pharmaceutical Sciences, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - István Árvai
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Ágnes Rusznyák
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
- University of Debrecen, Doctoral School of Pharmaceutical Sciences, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Cornel Balta
- Department of Histology, Faculty of Medicine, 'Vasile Goldiș' Western University of Arad, 86 Rebreanu Street, 310414 Arad, Romania
| | - Hildegard Herman
- Department of Histology, Faculty of Medicine, 'Vasile Goldiș' Western University of Arad, 86 Rebreanu Street, 310414 Arad, Romania
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary.
| |
Collapse
|
12
|
Fraix A, Kirejev V, Malanga M, Fenyvesi É, Béni S, Ericson MB, Sortino S. Cover Feature: A Three‐Color Fluorescent Supramolecular Nanoassembly of Phototherapeutics Activable by Two‐Photon Excitation with Near‐Infrared Light (Chem. Eur. J. 29/2019). Chemistry 2019. [DOI: 10.1002/chem.201901550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Aurore Fraix
- Laboratory of PhotochemistryDepartment of Drug SciencesUniversity of Catania Viale Andrea Doria, 6 95125 Catania Italy
| | - Vladimir Kirejev
- Biomedical Photonics GroupDepartment of Chemistry and Molecular BiologyUniversity of Gothenburg 405 30 Göteborg Sweden
| | - Milo Malanga
- CycloLabCyclodextrin R&D Ltd. Budapest 1097 Illatos út 7 Hungary
| | - Éva Fenyvesi
- CycloLabCyclodextrin R&D Ltd. Budapest 1097 Illatos út 7 Hungary
| | - Szabolcs Béni
- Department of PharmacognosySemmelweis University Budapest 1085 Üllői út 26 Hungary
| | - Marica B. Ericson
- Biomedical Photonics GroupDepartment of Chemistry and Molecular BiologyUniversity of Gothenburg 405 30 Göteborg Sweden
| | - Salvatore Sortino
- Laboratory of PhotochemistryDepartment of Drug SciencesUniversity of Catania Viale Andrea Doria, 6 95125 Catania Italy
| |
Collapse
|
13
|
Benkovics G, Bálint M, Fenyvesi É, Varga E, Béni S, Yannakopoulou K, Malanga M. Homo- and hetero-difunctionalized β-cyclodextrins: Short direct synthesis in gram scale and analysis of regiochemistry. Beilstein J Org Chem 2019; 15:710-720. [PMID: 30992718 PMCID: PMC6444459 DOI: 10.3762/bjoc.15.66] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 02/28/2019] [Indexed: 11/23/2022] Open
Abstract
The regioselective difunctionalization of cyclodextrins (CDs) leading to derivatives amenable to further transformations is a daunting task due to challenging purification and unambiguous characterization of the obtained regioisomers with similar physicochemical properties. The primary-side homo-difunctionalization of β-CD can lead to three regioisomers, while the hetero-difunctionalization can generate three pairs of pseudoenantiomers. Previously, approaches with several synthetic steps, expensive reagents, high purification demands and low yields of the products have been employed. Herein we present direct, short and efficient primary-side difunctionalization strategies featuring reproducibility, ease of product purification, scalability of the reactions and versatility of the substituents introduced. Specifically, the prepared ditosylated β-CDs were separated using preparative reversed-phase column chromatography and their structures were elucidated by NMR experiments. Azidation led to the corresponding pure diazido regioisomers. Direct monotosylation of 6-monoazido-β-CD or monoazidation of the single regioisomers 6A,6X-ditosyl-β-CDs afforded hetero-difunctionalized 6A-monoazido-6X-tosyl-β-CDs in significant yields. Overall, the single regioisomers, 6A,6X-ditosyl-, 6A,6X-diazido- and 6A-monoazido-6X-monotosyl-β-CD were prepared in one or two steps and purified in multigram scale thus opening the way towards further selective and orthogonal functionalizations of β-CD hosts.
Collapse
Affiliation(s)
- Gábor Benkovics
- CycloLab, Cyclodextrin Research and Development Laboratory Ltd., llatos út 7, Budapest, H-1097, Hungary
| | - Mihály Bálint
- CycloLab, Cyclodextrin Research and Development Laboratory Ltd., llatos út 7, Budapest, H-1097, Hungary
| | - Éva Fenyvesi
- CycloLab, Cyclodextrin Research and Development Laboratory Ltd., llatos út 7, Budapest, H-1097, Hungary
| | - Erzsébet Varga
- CycloLab, Cyclodextrin Research and Development Laboratory Ltd., llatos út 7, Budapest, H-1097, Hungary
| | - Szabolcs Béni
- Department of Pharmacognosy, Semmelweis University, Budapest, H-1085 Üllői út 26, Hungary
| | - Konstantina Yannakopoulou
- Institute of Nanoscience and Nanotechnology National Center for Scientific Research "Demokritos", Patr. Gregoriou E & 27 Neapoleos str., Aghia Paraskevi Attikis 15341, Greece
| | - Milo Malanga
- CycloLab, Cyclodextrin Research and Development Laboratory Ltd., llatos út 7, Budapest, H-1097, Hungary
| |
Collapse
|
14
|
Hajdu I, Angyal J, Szikra D, Kertész I, Malanga M, Fenyvesi É, Szente L, Vecsernyés M, Bácskay I, Váradi J, Fehér P, Ujhelyi Z, Vasvári G, Rusznyák Á, Trencsényi G, Fenyvesi F. Radiochemical synthesis and preclinical evaluation of 68Ga-labeled NODAGA-hydroxypropyl-beta-cyclodextrin (68Ga-NODAGA-HPBCD). Eur J Pharm Sci 2019; 128:202-208. [DOI: 10.1016/j.ejps.2018.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/29/2018] [Accepted: 12/01/2018] [Indexed: 11/29/2022]
|
15
|
Popielec A, Agnes M, Yannakopoulou K, Fenyvesi É, Loftsson T. Effect of β- and γ-cyclodextrins and their methylated derivatives on the degradation rate of benzylpenicillin. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0816-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
16
|
Abstract
Cyclodextrin complexes of fragrances, antimicrobial agents, dyes, insecticides, UV-filters can be incorporated into polymers (packaging films, trays, containers) either to ensure the slow release or a homogeneous distribution of the complexed substances. This way the propagation of microorganisms on surface of enwrapped products is decelerated, or the product is made more attractive by slowly released fragrances, protected against UV-light-induced deterioration, oxidation, etc. Incorporating empty cyclodextrins into the packaging material an aroma barrier packaging is produced, which decelerates the loss of the aroma from the packaged food, prevents the penetration of undesired volatile pollutants from the environment, like components of exhaust gases, cigarette smoke, and reduces the migration of plasticizers, residual solvents and monomers, etc. Applying cyclodextrins in active packaging allows to preserve the quality of food and ensures a longer shelf-life for the packaged items.
Collapse
Affiliation(s)
- Lajos Szente
- CycloLab Cyclodextrin R & D Laboratory Ltd., H-1097 Budapest, Hungary.
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R & D Laboratory Ltd., H-1097 Budapest, Hungary.
| |
Collapse
|
17
|
Popielec A, Agnes M, Yannakopoulou K, Fenyvesi É, Loftsson T. Self-assembled cyclodextrin-based nanoparticles for meropenem stabilization. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.02.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
18
|
Morin-Crini N, Winterton P, Fourmentin S, Wilson LD, Fenyvesi É, Crini G. Water-insoluble β-cyclodextrin–epichlorohydrin polymers for removal of pollutants from aqueous solutions by sorption processes using batch studies: A review of inclusion mechanisms. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.07.004] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
19
|
Crini G, Fourmentin S, Fenyvesi É, Torri G, Fourmentin M, Morin-Crini N. Fundamentals and Applications of Cyclodextrins. Environmental Chemistry for a Sustainable World 2018. [DOI: 10.1007/978-3-319-76159-6_1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
20
|
Benkovics G, Malanga M, Fenyvesi É. The ‘Visualized’ macrocycles: Chemistry and application of fluorophore tagged cyclodextrins. Int J Pharm 2017; 531:689-700. [DOI: 10.1016/j.ijpharm.2017.04.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 04/06/2017] [Accepted: 04/16/2017] [Indexed: 12/22/2022]
|
21
|
Thomsen H, Benkovics G, Fenyvesi É, Farewell A, Malanga M, Ericson MB. Delivery of cyclodextrin polymers to bacterial biofilms — An exploratory study using rhodamine labelled cyclodextrins and multiphoton microscopy. Int J Pharm 2017; 531:650-657. [DOI: 10.1016/j.ijpharm.2017.06.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 05/29/2017] [Accepted: 06/03/2017] [Indexed: 01/07/2023]
|
22
|
Stjern L, Voittonen S, Weldemichel R, Thuresson S, Agnes M, Benkovics G, Fenyvesi É, Malanga M, Yannakopoulou K, Feiler A, Valetti S. Cyclodextrin-mesoporous silica particle composites for controlled antibiotic release. A proof of concept toward colon targeting. Int J Pharm 2017; 531:595-605. [DOI: 10.1016/j.ijpharm.2017.05.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/24/2017] [Accepted: 05/25/2017] [Indexed: 11/16/2022]
|
23
|
Benkovics G, Afonso D, Darcsi A, Béni S, Conoci S, Fenyvesi É, Szente L, Malanga M, Sortino S. Novel β-cyclodextrin-eosin conjugates. Beilstein J Org Chem 2017; 13:543-551. [PMID: 28405233 PMCID: PMC5372748 DOI: 10.3762/bjoc.13.52] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 02/23/2017] [Indexed: 01/08/2023] Open
Abstract
Eosin B (EoB) and eosin Y (EoY), two xanthene dye derivatives with photosensitizing ability were prepared in high purity through an improved synthetic route. The dyes were grafted to a 6-monoamino-β-cyclodextrin scaffold under mild reaction conditions through a stable amide linkage using the coupling agent 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride. The molecular conjugates, well soluble in aqueous medium, were extensively characterized by 1D and 2D NMR spectroscopy and mass spectrometry. Preliminary spectroscopic investigations showed that the β-cyclodextrin–EoY conjugate retains both the fluorescence properties and the capability to photogenerate singlet oxygen of the unbound chromophore. In contrast, the corresponding β-cyclodextrin–EoB conjugate did not show either relevant emission or photosensitizing activity probably due to aggregation in aqueous medium, which precludes any response to light excitation.
Collapse
Affiliation(s)
- Gábor Benkovics
- CycloLab, Cyclodextrin R&D Ltd, Budapest, H-1097 Illatos út 7, Hungary; Department of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavová 8, 128 43, Prague 2, Czech Republic
| | - Damien Afonso
- Laboratory of Photochemistry, Department of Drug Sciences, University of Catania, I-95125 Viale A. Doria 6, Italy
| | - András Darcsi
- Department of Pharmacognosy, Semmelweis University, H-1085 Üllői út 26, Hungary
| | - Szabolcs Béni
- Department of Pharmacognosy, Semmelweis University, H-1085 Üllői út 26, Hungary
| | - Sabrina Conoci
- STMicroelectronics, Stradale Primosole 50, I-95121, Catania, Italy
| | - Éva Fenyvesi
- CycloLab, Cyclodextrin R&D Ltd, Budapest, H-1097 Illatos út 7, Hungary
| | - Lajos Szente
- CycloLab, Cyclodextrin R&D Ltd, Budapest, H-1097 Illatos út 7, Hungary
| | - Milo Malanga
- CycloLab, Cyclodextrin R&D Ltd, Budapest, H-1097 Illatos út 7, Hungary
| | - Salvatore Sortino
- Laboratory of Photochemistry, Department of Drug Sciences, University of Catania, I-95125 Viale A. Doria 6, Italy
| |
Collapse
|
24
|
Abstract
Cyclodextrins are tasteless, odorless, nondigestible, noncaloric, noncariogenic saccharides, which reduce the digestion of carbohydrates and lipids. They have low glycemic index and decrease the glycemic index of the food. They are either non- or only partly digestible by the enzymes of the human gastrointestinal (GI) tract and fermented by the gut microflora. Based on these properties, cyclodextrins are dietary fibers useful for controlling the body weight and blood lipid profile. They are prebiotics, improve the intestinal microflora by selective proliferation of bifidobacteria. These antiobesity and anti-diabetic effects make them bioactive food supplements and nutraceuticals. In this review, these features are evaluated for α-, β- and γ-cyclodextrins, which are the cyclodextrin variants approved by authorities for food applications. The mechanisms behind these effects are reviewed together with the applications as solubilizers, stabilizers of dietary lipids, such as unsaturated fatty acids, phytosterols, vitamins, flavonoids, carotenoids and other nutraceuticals. The recent applications of cyclodextrins for reducing unwanted components, such as trans-fats, allergens, mycotoxins, acrylamides, bitter compounds, as well as in smart active packaging of foods are also overviewed.
Collapse
Affiliation(s)
- É Fenyvesi
- a CycloLab Cyclodextrin Research & Development Laboratory, Ltd. , Budapest , Hungary
| | - M Vikmon
- a CycloLab Cyclodextrin Research & Development Laboratory, Ltd. , Budapest , Hungary
| | - L Szente
- a CycloLab Cyclodextrin Research & Development Laboratory, Ltd. , Budapest , Hungary
| |
Collapse
|
25
|
Aykaç A, Noiray M, Malanga M, Agostoni V, Casas-Solvas JM, Fenyvesi É, Gref R, Vargas-Berenguel A. A non-covalent "click chemistry" strategy to efficiently coat highly porous MOF nanoparticles with a stable polymeric shell. Biochim Biophys Acta Gen Subj 2017; 1861:1606-1616. [PMID: 28137620 DOI: 10.1016/j.bbagen.2017.01.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/13/2017] [Accepted: 01/16/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Metal-organic framework nanoparticles (nanoMOFs) are biodegradable highly porous materials with a remarkable ability to load therapeutic agents with a wide range of physico-chemical properties. Engineering the nanoMOFs surface may provide nanoparticles with higher stability, controlled release, and targeting abilities. Designing postsynthetic, non-covalent self-assembling shells for nanoMOFs is especially appealing due to their simplicity, versatility, absence of toxic byproducts and minimum impact on the original host-guest ability. METHODS In this study, several β-cyclodextrin-based monomers and polymers appended with mannose or rhodamine were randomly phosphorylated, and tested as self-assembling coating building blocks for iron trimesate MIL-100(Fe) nanoMOFs. The shell formation and stability were studied by isothermal titration calorimetry (ITC), spectrofluorometry and confocal imaging. The effect of the coating on tritium-labeled AZT-PT drug release was estimated by scintillation counting. RESULTS Shell formation was conveniently achieved by soaking the nanoparticles in self-assembling agent aqueous solutions. The grafted phosphate moieties enabled a firm anchorage of the coating to the nanoMOFs. Coating stability was directly related to the density of grafted phosphate groups, and did not alter nanoMOFs morphology or drug release kinetics. CONCLUSION An easy, fast and reproducible non-covalent functionalization of MIL-100(Fe) nanoMOFs surface based on the interaction between phosphate groups appended to β-cyclodextrin derivatives and iron(III) atoms is presented. GENERAL SIGNIFICANCE This study proved that discrete and polymeric phosphate β-cyclodextrin derivatives can conform non-covalent shells on iron(III)-based nanoMOFs. The flexibility of the β-cyclodextrin to be decorated with different motifs open the way towards nanoMOFs modifications for drug delivery, catalysis, separation, imaging and sensing. This article is part of a Special Issue entitled "Recent Advances in Bionanomaterials" Guest Editors: Dr. Marie-Louise Saboungi and Dr. Samuel D. Bader.
Collapse
Affiliation(s)
- Ahmet Aykaç
- Departamento de Química y Física, Universidad de Almería, 04120 Almería, Spain.
| | - Magali Noiray
- Faculté de Pharmacie, UMR 8612 CNRS Université Paris-Sud, Châtenay-Malabry, France.
| | - Milo Malanga
- CycloLab, Cyclodextrin R&D Ltd., Budapest, Hungary.
| | - Valentina Agostoni
- Faculté de Pharmacie, UMR 8612 CNRS Université Paris-Sud, Châtenay-Malabry, France.
| | | | - Éva Fenyvesi
- CycloLab, Cyclodextrin R&D Ltd., Budapest, Hungary.
| | - Ruxandra Gref
- ISMO, Université Paris -Sud, Université Paris Saclay, Orsay, France.
| | | |
Collapse
|
26
|
Agócs TZ, Puskás I, Varga E, Molnár M, Fenyvesi É. Stabilization of nanosized titanium dioxide by cyclodextrin polymers and its photocatalytic effect on the degradation of wastewater pollutants. Beilstein J Org Chem 2016; 12:2873-2882. [PMID: 28144360 PMCID: PMC5238591 DOI: 10.3762/bjoc.12.286] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/19/2016] [Indexed: 11/23/2022] Open
Abstract
Advanced oxidation processes (AOPs) are considered highly competitive water treatment technologies for the removal of organic pollutants. Among AOP techniques, photocatalysis has recently been the most widely studied. Our aims were to investigate how the dispersion of nanosized titanium dioxide (nanoTiO2) applied in photodegradation-based procedures can be stabilized with cyclodextrins in order to obtain a new, more efficient photocatalyst for the purification of waters polluted by xenobiotics applying UV irradiation. During our work, on the one hand, we studied the behavior and stability of nanoTiO2 in cyclodextrin solutions. On the other hand, we used various monomer and polymer cyclodextrin derivatives, and assessed the options for nanoTiO2 stabilization in the presence of various salts and tap water on the basis of turbidity tests. The physical stability of nanoTiO2 dispersions is diminished in the presence of the salts found in tap water (and occurring also in surface waters and ground water) and they are precipitated immediately. This colloidal instability can be improved by cyclodextrin derivatives. Based on the results of our studies we have selected carboxymethyl β-cyclodextrin polymer (CMBCD-P) for stabilization of nanoTiO2 dispersions. The photocatalytic degradation of methylene blue and ibuprofen as model organic pollutants in various media (distilled water, NaCl solution and tap water) has been studied using nanoTiO2 as catalyst stabilized by CMBCD-P. CMBCD-P itself showed a catalytic effect on the UV degradation of methylene blue. In addition to enhancing the colloid stability of nanoTiO2 CMBCD-P showed also synergistic effects in catalyzing the photodecomposition process of the dye. On the other hand, ibuprofen as a model pharmaceutical, a pollutant of emerging concern (EP), was protected by CMBCD-P against the photocatalytic degradation showing that inclusion complex formation can result in opposite effects depending on the structure of the host–guest complex.
Collapse
Affiliation(s)
- Tamás Zoltán Agócs
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary; Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szent Gellért tér 4, Budapest, 1111, Hungary
| | - István Puskás
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - Erzsébet Varga
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - Mónika Molnár
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szent Gellért tér 4, Budapest, 1111, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| |
Collapse
|
27
|
Fejős I, Varga E, Benkovics G, Darcsi A, Malanga M, Fenyvesi É, Sohajda T, Szente L, Béni S. Comparative evaluation of the chiral recognition potential of single-isomer sulfated beta-cyclodextrin synthesis intermediates in non-aqueous capillary electrophoresis. J Chromatogr A 2016; 1467:454-462. [DOI: 10.1016/j.chroma.2016.07.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/08/2016] [Accepted: 07/14/2016] [Indexed: 10/21/2022]
|
28
|
Malanga M, Szemán J, Fenyvesi É, Puskás I, Csabai K, Gyémánt G, Fenyvesi F, Szente L. "Back to the Future": A New Look at Hydroxypropyl Beta-Cyclodextrins. J Pharm Sci 2016; 105:2921-2931. [PMID: 27317368 DOI: 10.1016/j.xphs.2016.04.034] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/29/2016] [Accepted: 04/29/2016] [Indexed: 12/14/2022]
Abstract
Since the discovery about 30 years ago (2-hydroxypropyl) beta-cyclodextrin, a highly soluble derivative of beta-cyclodextrin, has become an approved excipient of drug formulations included both in the United States and European Pharmacopoeias. It is recommended to use as solubilizer and stabilizer for oral and parenteral formulations. Recently, its pharmacological activity has been recognized in various diseases. The increasing applications require a closer look to the structure-activity relationship. As (2-hydroxypropyl) beta-cyclodextrin (HPBCD) is always a mixture of isomers with various degrees and pattern of hydroxypropylation, no wonder that the products of different manufacturers are often different. Several HPBCDs were compared applying a battery of analytical tools including thin layer chromatography, high performance liquid chromatography (HPLC), HPLC-mass spectrometry (MS), and matrix-assisted laser desorption MS. We studied how the average degree of substitution affects the aggregation behavior, the toxicity, and the solubilizing effect on poorly soluble drugs. We found that the products with low average degree of substitution are more prone to aggregation. The samples studied are nontoxic to Caco-2 cells and have low hemolytic activity. The solubility enhancement of poorly soluble drugs decreases or increases with increasing degree of substitution or shows a maximum curve depending on the properties of the guest.
Collapse
Affiliation(s)
- Milo Malanga
- CycloLab Cyclodextrin Research & Development Ltd, Budapest, Hungary H-1097
| | - Julianna Szemán
- CycloLab Cyclodextrin Research & Development Ltd, Budapest, Hungary H-1097
| | - Éva Fenyvesi
- CycloLab Cyclodextrin Research & Development Ltd, Budapest, Hungary H-1097.
| | - István Puskás
- CycloLab Cyclodextrin Research & Development Ltd, Budapest, Hungary H-1097
| | - Katalin Csabai
- CycloLab Cyclodextrin Research & Development Ltd, Budapest, Hungary H-1097
| | - Gyöngyi Gyémánt
- Inorganic and Analytical Chemistry, Faculty of Sciences and Technology, University of Debrecen, Hungary, H-4032
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin Research & Development Ltd, Budapest, Hungary H-1097
| |
Collapse
|
29
|
Popielec A, Fenyvesi É, Yannakopoulou K, Loftsson T. Effect of cyclodextrins on the degradation rate of benzylpenicillin. Pharmazie 2016; 71:68-75. [PMID: 27004370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The effect of cyclodextrin (CD) inclusion complexes on the degradation of benzylpenicillin in aqueous solutions was investigated at several different pH values and 37°C. The effects of neutral as well as both positively and negatively charged CDs were evaluated; all together 13 different CDs. Kinetic studies with HPβCD and RMβCD at pH ranging from 1.2 to 9.6 showed that CDs have stabilizing effect on the β-lactam ring in aqueous acidic media but generally accelerated the hydrolytic cleavage of the β-lactam ring in neutral and basic media. At physiologic pH (pH 7.4) quaternary ammonium CD derivatives (i.e., positively charged CD derivatives) have the highest catalytic effect, resulting in 6- to 18-fold enhancement of hydrolysis rate, while both the neutral methylated CDs had much less effect, resulting in 2- to 3-fold enhancement, and the negatively charged CD derivatives, resulting in only about 1.1- to 1.2-fold enhancement in the hydrolytic cleavage of the β-lactam ring. Addition of water-soluble polymers to the aqueous reaction media containing CDs was shown to decrease the catalyzing effects of CDs on the β-lactam hydrolysis.
Collapse
|
30
|
Réti-Nagy K, Malanga M, Fenyvesi É, Szente L, Vámosi G, Váradi J, Bácskay I, Fehér P, Ujhelyi Z, Róka E, Vecsernyés M, Balogh G, Vasvári G, Fenyvesi F. Endocytosis of fluorescent cyclodextrins by intestinal Caco-2 cells and its role in paclitaxel drug delivery. Int J Pharm 2015; 496:509-17. [DOI: 10.1016/j.ijpharm.2015.10.049] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/14/2015] [Accepted: 10/16/2015] [Indexed: 12/22/2022]
|
31
|
Jurecska L, Dobosy P, Barkács K, Fenyvesi É, Záray G. Reprint of "Characterization of cyclodextrin containing nanofilters for removal of pharmaceutical residues". J Pharm Biomed Anal 2015; 106:124-8. [PMID: 25638693 DOI: 10.1016/j.jpba.2015.01.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 05/07/2014] [Accepted: 05/09/2014] [Indexed: 11/30/2022]
Abstract
Due to the increasing amount of persistent organic pollutants (POPs) in general and pharmaceutical residues in particular in municipal wastewater, the efficiency of water treatment technologies should be improved. Following the biological treatment of wastewater nanofiltration offers a possible way for the removal of POPs. In this study β-cyclodextrin containing nanofilters having different chemical composition and thickness (1.5-3.5 mm) were investigated. For their characterization, their adsorption capacity was determined applying ibuprofen containing model solution and total organic carbon (TOC) analyzer. It could be established that the regeneration of nanofilters with ethanol and the application of inorganic additives (NaCl, NaHCO3, NH4HCO3) increased the adsorption capacity of nanofilters. The best results were achieved with chemical composition of 30 m/m% β-cyclodextrin polymer beads and 70 m/m% ultra-high molecular weight polyethylene in the presence of 1 2mmol ammonium hydrogen carbonate/nanofilter.
Collapse
Affiliation(s)
- Laura Jurecska
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Péter Dobosy
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Katalin Barkács
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin Research & Development Laboratory Ltd., Illatos út 7, H-1097 Budapest, Hungary
| | - Gyula Záray
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary.
| |
Collapse
|
32
|
Rajnavölgyi É, Laczik R, Kun V, Szente L, Fenyvesi É. Effects of RAMEA-complexed polyunsaturated fatty acids on the response of human dendritic cells to inflammatory signals. Beilstein J Org Chem 2014; 10:3152-60. [PMID: 25670984 PMCID: PMC4311633 DOI: 10.3762/bjoc.10.332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 12/11/2014] [Indexed: 12/12/2022] Open
Abstract
The n-3 fatty acids are not produced by mammals, although they are essential for hormone synthesis and maintenance of cell membrane structure and integrity. They have recently been shown to inhibit inflammatory reactions and also emerged as potential treatment options for inflammatory diseases, such as rheumatoid arthritis, asthma and inflammatory bowel diseases. Dendritic cells (DC) play a central role in the regulation of both innate and adaptive immunity and upon inflammatory signals they produce various soluble factors among them cytokines and chemokines that act as inflammatory or regulatory mediators. In this study we monitored the effects of α-linoleic acid, eicosapentaenoic acid and docosahexaenoic acid solubilized in a dimethyl sulfoxide (DMSO)/ethanol 1:1 mixture or as complexed by randomly methylated α-cyclodextrin (RAMEA) on the inflammatory response of human monocyte-derived dendritic cells (moDC). The use of RAMEA for enhancing aqueous solubility of n-3 fatty acids has the unambiguous advantage over applying RAMEB (the β-cyclodextrin analog), since there is no interaction with cell membrane cholesterol. In vitro differentiated moDC were left untreated or were stimulated by bacterial lipopolysaccharide and polyinosinic:polycytidylic acid, mimicking bacterial and viral infections, respectively. The response of unstimulated and activated moDC to n-3 fatty acid treatment was tested by measuring the cell surface expression of CD1a used as a phenotypic and CD83 as an activation marker of inflammatory moDC differentiation and activation by using flow cytometry. Monocyte-derived DC activation was also monitored by the secretion level of the pro- and anti-inflammatory cytokines IL-1β, TNF-α, IL-6, IL-10 and IL-12, respectively. We found that RAMEA-complexed n-3 fatty acids reduced the expression of CD1a protein in both LPS and Poly(I:C) stimulated moDC significantly, but most efficiently by eicosapentaenic acid, while no significant change in the expression of CD83 protein was observed. The production of IL-6 by LPS-activated moDC was also reduced significantly when eicosapentaenic acid was added as a RAMEA complex as compared to its DMSO-solubilized form or to the other two n-3 fatty acids either complexed or not. Based on these results n-3 fatty acids solubilized by RAMEA provide with a new tool for optimizing the anti-inflammatory effects of n-3 fatty acids exerted on human moDC and mediated through the GP120 receptor without interfering with the cell membrane structure.
Collapse
Affiliation(s)
- Éva Rajnavölgyi
- Department of Immunology, University of Debrecen, Egyetem tér 1, Debrecen 4032, Hungary
| | - Renáta Laczik
- Department of Immunology, University of Debrecen, Egyetem tér 1, Debrecen 4032, Hungary
| | - Viktor Kun
- Department of Immunology, University of Debrecen, Egyetem tér 1, Debrecen 4032, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin Research & Development Laboratory Ltd., Illatos út 7, Budapest 1097, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin Research & Development Laboratory Ltd., Illatos út 7, Budapest 1097, Hungary
| |
Collapse
|
33
|
Malanga M, Bálint M, Puskás I, Tuza K, Sohajda T, Jicsinszky L, Szente L, Fenyvesi É. Synthetic strategies for the fluorescent labeling of epichlorohydrin-branched cyclodextrin polymers. Beilstein J Org Chem 2014; 10:3007-18. [PMID: 25670971 PMCID: PMC4311710 DOI: 10.3762/bjoc.10.319] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/28/2014] [Indexed: 11/23/2022] Open
Abstract
The fluorescent tagging of cyclodextrin derivatives enlarges their spectroscopic properties thus generating chemosensors, biological tools for visualization and sophisticated photoresponsive devices. Cyclodextrin polymers, due to the cooperative interactions, exhibit additional properties compared to their monomeric counterpart. These macromolecules can be prepared either in well water-soluble form or as gels of high swelling. Two versatile synthetic strategies for introducing a fluorescent tag (rhodamine, fluorescein, nitrobenzofuran or coumarin) into the water-soluble epichlorohydrin branched cyclodextrin polymers were worked out and compared. The fluorescent labeling was realized in three steps: 1) building in azido moieties, 2) transforming the azido groups into amino groups and 3) coupling the proper fluorescent compound to the amino groups. The other strategy started by functionalization of the monomer prior to the branching. Either the fluorescent-labeled monomer or the intermediate azido derivative of the monomer was branched. Further tuning of the properties of the polymer was achieved via branching of the methylated cyclodextrin derivative. The key intermediates and the fluorescent final products were characterized by various spectroscopic techniques and capillary electrophoresis. The applied synthetic routes were evaluated based on the molecular weight, cyclodextrin content of the products and the efficiency of labeling.
Collapse
Affiliation(s)
- Milo Malanga
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - Mihály Bálint
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - István Puskás
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - Kata Tuza
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - Tamás Sohajda
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - László Jicsinszky
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin Research and Development Laboratory Ltd, Illatos 7, Budapest, H-1097 Hungary
| |
Collapse
|
34
|
Vecsernyés M, Fenyvesi F, Bácskay I, Deli MA, Szente L, Fenyvesi É. Cyclodextrins, blood-brain barrier, and treatment of neurological diseases. Arch Med Res 2014; 45:711-29. [PMID: 25482528 DOI: 10.1016/j.arcmed.2014.11.020] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 11/24/2014] [Indexed: 12/20/2022]
Abstract
Biological barriers are the main defense systems of the homeostasis of the organism and protected organs. The blood-brain barrier (BBB), formed by the endothelial cells of brain capillaries, not only provides nutrients and protection to the central nervous system but also restricts the entry of drugs, emphasizing its importance in the treatment of neurological diseases. Cyclodextrins are increasingly used in human pharmacotherapy. Due to their favorable profile to form hydrophilic inclusion complexes with poorly soluble active pharmaceutical ingredients, they are present as excipients in many marketed drugs. Application of cyclodextrins is widespread in formulations for oral, parenteral, nasal, pulmonary, and skin delivery of drugs. Experimental and clinical data suggest that cyclodextrins can be used not only as excipients for centrally acting marketed drugs like antiepileptics, but also as active pharmaceutical ingredients to treat neurological diseases. Hydroxypropyl-β-cyclodextrin received orphan drug designation for the treatment of Niemann-Pick type C disease. In addition to this rare lysosomal storage disease with neurological symptoms, experimental research revealed the potential therapeutic use of cyclodextrins and cyclodextrin nanoparticles in neurodegenerative diseases, stroke, neuroinfections and brain tumors. In this context, the biological effects of cyclodextrins, their interaction with plasma membranes and extraction of different lipids are highly relevant at the level of the BBB.
Collapse
Affiliation(s)
- Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
| | - Mária A Deli
- Department of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin Research and Development Laboratory Ltd., Budapest, Hungary
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin Research and Development Laboratory Ltd., Budapest, Hungary
| |
Collapse
|
35
|
Tuza K, Jicsinszky L, Sohajda T, Puskás I, Fenyvesi É. Synthesis of modified cyclic and acyclic dextrins and comparison of their complexation ability. Beilstein J Org Chem 2014; 10:2836-43. [PMID: 25550750 PMCID: PMC4273282 DOI: 10.3762/bjoc.10.301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/14/2014] [Indexed: 11/23/2022] Open
Abstract
We compared the complex forming ability of α-, β- and γ-cyclodextrins (α-CD, β-CD and γ-CD) with their open ring analogs. In addition to the native cyclodextrins also modified cyclodextrins and the corresponding maltooligomers, functionalized with neutral 2-hydroxypropyl moieties, were synthesized. A new synthetic route was worked out via bromination, benzylation, deacetylation and debenzylation to obtain the 2-hydroxypropyl maltooligomer counterparts. The complexation properties of non-modified and modified cyclic and acyclic dextrins were studied and compared by photon correlation spectroscopy (PCS) and capillary electrophoresis (CE) using model guest compounds. In some cases cyclodextrins and their open-ring analogs (acyclodextrins) show similar complexation abilities, while with other guests considerably different behavior was observed depending on the molecular dimensions and chemical characteristics of the guests. This was explained by the enhanced flexibility of the non-closed rings. Even the signs of enantiorecognition were observed for the chloropheniramine/hydroxypropyl maltohexaose system. Further studies are planned to help the deeper understanding of the interactions.
Collapse
Affiliation(s)
- Kata Tuza
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - László Jicsinszky
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
- Dipartimento di Scienza e Tecnologia del Farmaco, Universitá di Torino, via P. Giuria 9, Turin, 10125, Italy
| | - Tamás Sohajda
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - István Puskás
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd, Illatos út 7, Budapest, 1097, Hungary
| |
Collapse
|
36
|
Nagy ZM, Molnár M, Fekete-Kertész I, Molnár-Perl I, Fenyvesi É, Gruiz K. Removal of emerging micropollutants from water using cyclodextrin. Sci Total Environ 2014; 485-486:711-719. [PMID: 24775808 DOI: 10.1016/j.scitotenv.2014.04.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 04/01/2014] [Accepted: 04/01/2014] [Indexed: 04/15/2023]
Abstract
Small scale laboratory experiment series were performed to study the suitability of a cyclodextrin-based sorbent (ß-cyclodextrin bead polymer, BCDP) for modelling the removal of micropollutants from drinking water and purified waste water using simulated inflow test solutions containing target analytes (ibuprofen, naproxen, ketoprofen, bisphenol-A, diclofenac, β-estradiol, ethinylestradiol, estriol, cholesterol at 2-6 μg/L level). This work was focused on the preliminary evaluation of BCDP as a sorbent in two different model systems (filtration and fluidization) applied for risk reduction of emerging micropollutants. For comparison different filter systems combined with various sorbents (commercial filter and activated carbon) were applied and evaluated in the filtration experiment series. The spiked test solution (inflow) and the treated outflows were characterized by an integrated methodology including chemical analytical methods gas chromatography-tandem mass spectrometry (GC-MS/MS) and various environmental toxicity tests to determine the efficiency and selectivity of the applied sorbents. Under experimental conditions the cyclodextrin-based filters used for purification of drinking water in most cases were able to absorb more than 90% of the bisphenol-A and of the estrogenic compounds. Both the analytical chemistry and toxicity results showed efficient elimination of these pollutants. Especially the toxicity of the filtrate decreased considerably. Laboratory experiment modelling post-purification of waste water was also performed applying fluidization technology by ß-cyclodextrin bead polymer. The BCDP removed efficiently from the spiked test solution most of the micropollutants, especially the bisphenol-A (94%) and the hormones (87-99%) The results confirmed that the BCDP-containing sorbents provide a good solution to water quality problems and they are able to decrease the load and risk posed by micropollutants to the water systems.
Collapse
Affiliation(s)
- Zsuzsanna Magdolna Nagy
- Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary.
| | - Mónika Molnár
- Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary
| | - Ildikó Fekete-Kertész
- Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary
| | - Ibolya Molnár-Perl
- Cooperative Research Center for Environmental Sciences, Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin R&D Laboratory Ltd., Illatos út 7., H-1097 Budapest, Hungary
| | - Katalin Gruiz
- Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary
| |
Collapse
|
37
|
Jurecska L, Dobosy P, Barkács K, Fenyvesi É, Záray G. Characterization of cyclodextrin containing nanofilters for removal of pharmaceutical residues. J Pharm Biomed Anal 2014; 98:90-3. [PMID: 24893212 DOI: 10.1016/j.jpba.2014.05.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 05/07/2014] [Accepted: 05/09/2014] [Indexed: 10/25/2022]
Abstract
Due to the increasing amount of persistent organic pollutants (POPs) in general and pharmaceutical residues in particular in municipal wastewater, the efficiency of water treatment technologies should be improved. Following the biological treatment of wastewater nanofiltration offers a possible way for the removal of POPs. In this study β-cyclodextrin containing nanofilters having different chemical composition and thickness (1.5-3.5mm) were investigated. For their characterization, their adsorption capacity was determined applying ibuprofen containing model solution and total organic carbon (TOC) analyzer. It could be established that the regeneration of nanofilters with ethanol and the application of inorganic additives (NaCl, NaHCO3, NH4HCO3) increased the adsorption capacity of nanofilters. The best results were achieved with chemical composition of 30m/m% β-cyclodextrin polymer beads and 70m/m% ultra-high molecular weight polyethylene in the presence of 12mmol ammonium hydrogen carbonate/nanofilter.
Collapse
Affiliation(s)
- Laura Jurecska
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Péter Dobosy
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Katalin Barkács
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Éva Fenyvesi
- CycloLab Cyclodextrin Research & Development Laboratory Ltd., Illatos út 7, H-1097 Budapest, Hungary
| | - Gyula Záray
- Eötvös Loránd University, Laboratory of Environmental Chemistry and Bioanalytics, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary.
| |
Collapse
|
38
|
Fenyvesi É, Szemán J, Csabai K, Malanga M, Szente L. Methyl-Beta-Cyclodextrins: The Role of Number and Types of Substituents in Solubilizing Power. J Pharm Sci 2014; 103:1443-52. [DOI: 10.1002/jps.23917] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/05/2014] [Accepted: 02/06/2014] [Indexed: 12/19/2022]
|
39
|
Szente L, Puskás I, Csabai K, Fenyvesi É. Supramolecular Proteoglycan Aggregate Mimics: Cyclodextrin-Assisted Biodegradable Polymer Assemblies for Electrostatic-Driven Drug Delivery. Chem Asian J 2014; 9:1365-72. [DOI: 10.1002/asia.201301391] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/14/2013] [Indexed: 11/09/2022]
|
40
|
Fenyvesi F, Réti-Nagy K, Bacsó Z, Gutay-Tóth Z, Malanga M, Fenyvesi É, Szente L, Váradi J, Ujhelyi Z, Fehér P, Szabó G, Vecsernyés M, Bácskay I. Fluorescently labeled methyl-beta-cyclodextrin enters intestinal epithelial Caco-2 cells by fluid-phase endocytosis. PLoS One 2014; 9:e84856. [PMID: 24416301 PMCID: PMC3885658 DOI: 10.1371/journal.pone.0084856] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 11/19/2013] [Indexed: 11/22/2022] Open
Abstract
Cyclodextrins are widely used excipients for increasing the bioavailability of poorly water-soluble drugs. Their effect on drug absorption in the gastrointestinal tract is explained by their solubility- and permeability-enhancement. The aims of this study were to investigate penetration properties of fluorescently labeled randomly methylated-beta-cyclodextrin (FITC-RAMEB) on Caco-2 cell layer and examine the cellular entry of cyclodextrins on intestinal cells. The permeability of FITC-RAMEB through Caco-2 monolayers was very limited. Using this compound in 0.05 mM concentration the permeability coefficient was 3.35±1.29×10(-8) cm/s and its permeability did not change in the presence of 5 mM randomly methylated-beta-cyclodextrin. Despite of the low permeability, cellular accumulation of FITC-RAMEB in cytoplasmic vesicles was significant and showed strong time and concentration dependence, similar to the characteristics of the macropinocytosis marker Lucifer Yellow. The internalization process was fully inhibited at 0°C and it was drastically reduced at 37°C applying rottlerin, an inhibitor of macropinocytosis. Notably, FITC-RAMEB colocalized with the early endosome organizer Rab5a. These results have revealed that FITC-RAMEB is able to enter intestinal epithelial cells by fluid-phase endocytosis from the apical side. This mechanism can be an additional process which helps to overcome the intestinal barrier and contributes to the bioavailability enhancement of cyclodextrins.
Collapse
Affiliation(s)
- Ferenc Fenyvesi
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| | - Katalin Réti-Nagy
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| | - Zsolt Bacsó
- Department of Biophysics and Cell Biology, University of Debrecen, Debrecen, Hungary
| | - Zsuzsanna Gutay-Tóth
- Department of Biophysics and Cell Biology, University of Debrecen, Debrecen, Hungary
| | - Milo Malanga
- Cyclolab Cyclodextrin R&D Laboratory Ltd., Budapest, Hungary
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin R&D Laboratory Ltd., Budapest, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin R&D Laboratory Ltd., Budapest, Hungary
| | - Judit Váradi
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| | - Zoltán Ujhelyi
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| | - Pálma Fehér
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| | - Gábor Szabó
- Department of Biophysics and Cell Biology, University of Debrecen, Debrecen, Hungary
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, Hungary
| |
Collapse
|
41
|
Andersen E, Rácz I, Erös A, Bánhegyi G, Fenyvesi É, Takács E. Development of synthetic and natural mineral based adsorptive and filter media containing cyclodextrin moieties. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1757-899x/47/1/012038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
42
|
Puskás I, Czifra TC, Fenyvesi É, Szente L. Aggregation behavior of cyclodextrin and cholesterol in simulated human cerebrospinal fluid. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.bcdf.2013.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
43
|
Nagy ZM, Gruiz K, Molnár M, Fenyvesi É. Comparative evaluation of microbial and chemical methods for assessing 4-chlorophenol biodegradation in soil. Per Pol Chem Eng 2013. [DOI: 10.3311/ppch.2167] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
| | - Katalin Gruiz
- Department of Applied Biotechnology and Food Science
| | - Mónika Molnár
- Department of Applied Biotechnology and Food Science
| | | |
Collapse
|
44
|
Fekete-Kertész I, Molnár M, Atkári Á, Gruiz K, Fenyvesi É. Hydrogen peroxide oxidation for in situ remediation of trichloroethylene – from the laboratory to the field. Per Pol Chem Eng 2013. [DOI: 10.3311/ppch.2169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
45
|
Kandoth N, Malanga M, Fraix A, Jicsinszky L, Fenyvesi É, Parisi T, Colao I, Sciortino MT, Sortino S. A Host-Guest Supramolecular Complex with Photoregulated Delivery of Nitric Oxide and Fluorescence Imaging Capacity in Cancer Cells. Chem Asian J 2012; 7:2888-94. [DOI: 10.1002/asia.201200640] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 08/13/2012] [Indexed: 01/08/2023]
|
46
|
Fenyvesi F, Kiss T, Fenyvesi É, Szente L, Veszelka S, Deli MA, Váradi J, Fehér P, Ujhelyi Z, Tósaki Á, Vecsernyés M, Bácskay I. Randomly methylated β‐cyclodextrin derivatives enhance taxol permeability through human intestinal epithelial Caco‐2 cell monolayer. J Pharm Sci 2011; 100:4734-44. [DOI: 10.1002/jps.22666] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 03/23/2011] [Accepted: 05/25/2011] [Indexed: 11/10/2022]
|
47
|
|
48
|
Kiss T, Fenyvesi F, Bácskay I, Váradi J, Fenyvesi É, Iványi R, Szente L, Tósaki Á, Vecsernyés M. Evaluation of the cytotoxicity of β-cyclodextrin derivatives: Evidence for the role of cholesterol extraction. Eur J Pharm Sci 2010; 40:376-80. [DOI: 10.1016/j.ejps.2010.04.014] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 01/11/2010] [Accepted: 04/22/2010] [Indexed: 10/19/2022]
|
49
|
|
50
|
Balogh K, Szaniszló N, H-Otta K, Fenyvesi É. Can cyclodextrins really improve the selectivity of extraction of BTEX compounds? J INCL PHENOM MACRO 2007. [DOI: 10.1007/s10847-006-9234-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|