51
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Szabó P, Daróczi TB, Tóth G, Zelkó R. In vitro and in silico investigation of electrospun terbinafine hydrochloride-loaded buccal nanofibrous sheets. J Pharm Biomed Anal 2016; 131:156-159. [DOI: 10.1016/j.jpba.2016.08.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 08/15/2016] [Accepted: 08/25/2016] [Indexed: 11/30/2022]
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52
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Rusu A, Hancu G, Tóth G, Vancea S, Toma F, Mare AD, Man A, Niţulescu GM, Uivarosi V. New silver complexes with levofloxacin: Synthesis, characterization and microbiological studies. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.07.035] [Citation(s) in RCA: 11] [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] [Indexed: 01/25/2023]
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53
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Könye R, Ress ÁE, Sólyomváry A, Tóth G, Darcsi A, Komjáti B, Horváth P, Noszál B, Molnár-Perl I, Béni S, Boldizsár I. Enzyme-hydrolyzed Fruit of Jurinea mollis: A Rich Source of (-)-(8R,8′R)-Arctigenin. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601101011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In Jurinea mollis fruit, the dibenzylbutyrolactone-type lignan glycoside arctiin and its aglycone arctigenin were determined for the first time using a combination of optimized enzymatic treatment and complementary spectrometric (HPLC-MS, GC-MS) and spectroscopic (CD and NMR) methods. Analysis of separated fruit parts, i.e., the fruit wall and embryo, demonstrated the specific accumulation of arctiin, since it was exclusively found in the embryo. Arctiin in the embryo samples (71.5 mg/g) was found to be quantitatively converted into arctigenin (50.7 mg/g) by endogenous enzymatic hydrolysis, resulting in one of the highest arctigenin-containing plant tissues reported to date and allowing the selective isolation of arctigenin by our recently reported three-step isolation method. The absolute configuration of the isolated arctigenin was determined to be (-)-(8 R,8′ R). Conformational analysis of arctigenin was also performed, resulting in three major low energy conformations.
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Affiliation(s)
- Rita Könye
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest 1085, Hungary
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest 1117, Hungary
| | - Ágnes Evelin Ress
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest 1117, Hungary
| | - Anna Sólyomváry
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest 1085, Hungary
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre utca 7, Budapest 1092, Hungary
| | - András Darcsi
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest 1085, Hungary
| | - Balázs Komjáti
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Gellért tér 4, Budapest 1111, Hungary
| | - Péter Horváth
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre utca 7, Budapest 1092, Hungary
| | - Béla Noszál
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre utca 7, Budapest 1092, Hungary
| | - Ibolya Molnár-Perl
- Department of Analytical Chemistry, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, Budapest 1117, Hungary
| | - Szabolcs Béni
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest 1085, Hungary
| | - Imre Boldizsár
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest 1117, Hungary
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54
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Könye R, Ress ÁE, Sólyomváry A, Tóth G, Darcsi A, Komjáti B, Horvith P, Noszál B, Moinir-Perl I, Béni S, Boldizsár I. Enzyme-hydrolyzed Fruit of Jurinea mollis: a Rich Source of (-)-(8R,8'R)-Arctigenin. Nat Prod Commun 2016; 11:1459-1462. [PMID: 30549599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
In Jurinea mollis fruit, the dibenzylbutyrolactone-type lignan glycoside arctiin and its aglycone arctigenin were determined for the first time using a combination of optimized enzymatic treatment and complementary spectrometric (HPLC-MS, GC-MS) and spectroscopic (CD and NMR) methods. Analysis of separated fruit parts, i.e., the fruit wall and embryo, demonstrated the specific accumulation of arctiin, since it was exclusively found in the embryo. Arctiin in the embryo samples (71.5 mg/g) was found to be quantitatively converted into arctigenin (50.7 mg/g) by endogenous enzymatic hydrolysis, resulting in one of the highest arctigenin-containing plant tissues reported to date and allowing the selective isolation of arctigenin by our recently reported three-step isolation method. The absolute configuration of the isolated arctigenin was determined to be (-)-(8R,8'R). Conformational analysis of arctigenin was also performed, resulting in three major low energy conformations.
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55
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Deme R, Schlich M, Mucsi Z, Karvaly G, Tóth G, Mátyus P. Versatile synthesis of novel tetrahydroquinolines as potentially active semicarbazide-sensitive amine oxidase (SSAO) inhibitors via tert-amino effect. ARKIVOC 2016. [DOI: 10.3998/ark.5550190.p009.692] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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56
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Szabó ZI, Szőcs L, Horváth P, Komjáti B, Nagy J, Jánoska Á, Muntean DL, Noszál B, Tóth G. Liquid chromatography with mass spectrometry enantioseparation of pomalidomide on cyclodextrin-bonded chiral stationary phases and the elucidation of the chiral recognition mechanisms by NMR spectroscopy and molecular modeling. J Sep Sci 2016; 39:2941-9. [PMID: 27279456 DOI: 10.1002/jssc.201600354] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 03/28/2016] [Revised: 05/30/2016] [Accepted: 05/30/2016] [Indexed: 01/04/2023]
Abstract
A sensitive and validated liquid chromatography with mass spectrometry method was developed for the enantioseparation of the racemic mixture of pomalidomide, a novel, second-generation immunomodulatory drug, using β-cyclodextrin-bonded stationary phases. Four cyclodextrin columns (β-, hydroxypropyl-β-, carboxymethyl-β-, and sulfobutyl-β-cyclodextrin) were screened and the effects of eluent composition, flow rate, temperature, and organic modifier on enantioseparation were studied. Optimized parameters, offering baseline separation (resolution = 2.70 ± 0.02) were the following: β-cyclodextrin stationary phase, thermostatted at 15°C, and mobile phase consisting of methanol/0.1% acetic acid 10:90 v/v, delivered with 0.8 mL/min flow rate. For the optimized parameter at multiple reaction monitoring mode 274.1-201.0 transition with 20 eV collision energy and 100 V fragmentor voltage the limit of detection and limit of quantitation were 0.75 and 2.00 ng/mL, respectively. Since enantiopure standards were not available, elution order was determined upon comparison of the circular dichroism signals of the separated pomalidomide enantiomers with that of enantiopure thalidomide. The mechanisms underlying the chiral discrimination between the enantiomers were also investigated. Pomalidomide-β-cyclodextrin inclusion complex was characterized using nuclear magnetic resonance spectroscopy and molecular modeling. The thermodynamic aspects of chiral separation were also studied.
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Affiliation(s)
- Zoltán-István Szabó
- Faculty of Pharmacy, University of Medicine and Pharmacy of Tîrgu Mureș, Romania
| | - Levente Szőcs
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Péter Horváth
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Balázs Komjáti
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - József Nagy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Ádám Jánoska
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | | | - Béla Noszál
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
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57
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Szöcs L, Orgován G, Tóth G, Kraszni M, Gergó L, Hosztafi S, Noszál B. Site- and species-specific hydrolysis rates of heroin. Eur J Pharm Sci 2016; 89:105-14. [PMID: 27130543 DOI: 10.1016/j.ejps.2016.04.028] [Citation(s) in RCA: 3] [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: 03/11/2016] [Revised: 04/15/2016] [Accepted: 04/24/2016] [Indexed: 10/21/2022]
Abstract
The hydroxide-catalyzed non-enzymatic, simultaneous and consecutive hydrolyses of diacetylmorphine (DAM, heroin) are quantified in terms of 10 site- and species-specific rate constants in connection with also 10 site- and species-specific acid-base equilibrium constants, comprising all the 12 coexisting species in solution. This characterization involves the major and minor decomposition pathways via 6-acetylmorphine and 3-acetylmorphine, respectively, and morphine, the final product. Hydrolysis has been found to be 18-120 times faster at site 3 than at site 6, depending on the status of the amino group and the rest of the molecule. Nitrogen protonation accelerates the hydrolysis 5-6 times at site 3 and slightly less at site 6. Hydrolysis rate constants are interpreted in terms of intramolecular inductive effects and the concomitant local electron densities. Hydrolysis fraction, a new physico-chemical parameter is introduced and determined to quantify the contribution of the individual microspecies to the overall hydrolysis. Hydrolysis fractions are depicted as a function of pH.
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Affiliation(s)
- Levente Szöcs
- Semmelweis University, Department of Pharmaceutical Chemistry, Research Group for Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes E. u. 9, H-1092 Budapest, Hungary
| | - Gábor Orgován
- Semmelweis University, Department of Pharmaceutical Chemistry, Research Group for Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes E. u. 9, H-1092 Budapest, Hungary
| | - Gergő Tóth
- Semmelweis University, Department of Pharmaceutical Chemistry, Research Group for Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes E. u. 9, H-1092 Budapest, Hungary
| | - Márta Kraszni
- Semmelweis University, Department of Pharmaceutical Chemistry, Research Group for Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes E. u. 9, H-1092 Budapest, Hungary
| | - Lajos Gergó
- Eötvös Loránd University, Faculty of Informatics, Department of Numerical Analysis, Hungary
| | - Sándor Hosztafi
- Semmelweis University, Department of Pharmaceutical Chemistry, Research Group for Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes E. u. 9, H-1092 Budapest, Hungary
| | - Béla Noszál
- Semmelweis University, Department of Pharmaceutical Chemistry, Research Group for Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes E. u. 9, H-1092 Budapest, Hungary.
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58
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Tóth G, Hermann T, Da Silva MR, Montanarella L. Heavy metals in agricultural soils of the European Union with implications for food safety. Environ Int 2016; 88:299-309. [PMID: 26851498 DOI: 10.1016/j.envint.2015.12.017] [Citation(s) in RCA: 537] [Impact Index Per Article: 67.1] [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: 10/16/2015] [Revised: 12/11/2015] [Accepted: 12/16/2015] [Indexed: 05/22/2023]
Abstract
Soil plays a central role in food safety as it determines the possible composition of food and feed at the root of the food chain. However, the quality of soil resources as defined by their potential impact on human health by propagation of harmful elements through the food chain has been poorly studied in Europe due to the lack of data of adequate detail and reliability. The European Union's first harmonized topsoil sampling and coherent analytical procedure produced trace element measurements from approximately 22,000 locations. This unique collection of information enables a reliable overview of the concentration of heavy metals, also referred to as metal(loid)s including As, Cd, Cr, Cu, Hg, Pb, Zn, Sb. Co, and Ni. In this article we propose that in some cases (e.g. Hg and Cd) the high concentrations of soil heavy metal attributed to human activity can be detected at a regional level. While the immense majority of European agricultural land can be considered adequately safe for food production, an estimated 6.24% or 137,000km(2) needs local assessment and eventual remediation action.
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Affiliation(s)
- G Tóth
- European Commission, Joint Research Centre, Institute for Environment and Sustainability, 21027 Ispra, Via E. Fermi 2749, Italy.
| | - T Hermann
- University of Pannonia, Georgikon Faculty, Department of Crop Production and Soil Science, Hungary
| | - M R Da Silva
- Food and Agricultural Organization of the United Nations, Italy
| | - L Montanarella
- European Commission, Joint Research Centre, Institute for Environment and Sustainability, 21027 Ispra, Via E. Fermi 2749, Italy
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59
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Csábi J, Martins A, Sinka I, Csorba A, Molnár J, Zupkó I, Tóth G, Tillekeratne LMV, Hunyadi A. Synthesis and in vitro evaluation of the antitumor potential and chemo-sensitizing activity of fluorinated ecdysteroid derivatives. Med Chem Commun 2016. [DOI: 10.1039/c6md00431h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efflux pumps, like the ABCB1 transporter, play an important role in the chemo-resistance of various tumors and particularly of cancer stem cells.
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Affiliation(s)
- J. Csábi
- Institute of Pharmacognosy
- University of Szeged
- 6720 Szeged
- Hungary
| | - A. Martins
- Department of Medical Microbiology and Immunobiology
- University of Szeged
- 6720 Szeged
- Hungary
| | - I. Sinka
- Department of Pharmacodynamics and Biopharmacy
- University of Szeged
- 6720 Szeged
- Hungary
| | - A. Csorba
- Institute of Pharmacognosy
- University of Szeged
- 6720 Szeged
- Hungary
| | - J. Molnár
- Department of Medical Microbiology and Immunobiology
- University of Szeged
- 6720 Szeged
- Hungary
| | - I. Zupkó
- Department of Pharmacodynamics and Biopharmacy
- University of Szeged
- 6720 Szeged
- Hungary
- Interdisciplinary Centre for Natural Products
| | - G. Tóth
- Institute of Pharmacognosy
- University of Szeged
- 6720 Szeged
- Hungary
- NMR group
| | - L. M. V. Tillekeratne
- Department of Medicinal and Biological Chemistry
- College of Pharmacy and Pharmaceutical Sciences
- MS 606
- University of Toledo
- Toledo
| | - A. Hunyadi
- Institute of Pharmacognosy
- University of Szeged
- 6720 Szeged
- Hungary
- Interdisciplinary Centre for Natural Products
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60
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Darcsi A, Szakács Z, Zsila F, Tóth G, Rácz Á, Béni S. NMR, CD and UV spectroscopic studies reveal uncommon binding modes of dapoxetine to native cyclodextrins. RSC Adv 2016. [DOI: 10.1039/c6ra22431h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Complex formation between the selective serotonin reuptake inhibitor drug (S)-dapoxetine (Dpx) and β-, γ-, and methylated γ-cyclodextrins (CyDs) was studied by complementary experimental techniques.
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Affiliation(s)
- András Darcsi
- Department of Pharmacognosy
- Semmelweis University
- Budapest
- Hungary
| | - Zoltán Szakács
- Spectroscopic Research Department
- Chemical Works of Gedeon Richter Plc
- Budapest
- Hungary
| | - Ferenc Zsila
- Biomolecular Self-Assembly Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- Budapest
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry
- Semmelweis University
- Budapest H-1092
- Hungary
| | - Ákos Rácz
- Department of Pharmaceutical Chemistry
- Semmelweis University
- Budapest H-1092
- Hungary
| | - Szabolcs Béni
- Department of Pharmacognosy
- Semmelweis University
- Budapest
- Hungary
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61
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Szabó ZI, Szőcs L, Muntean DL, NoszáL B, Tóth G. Chiral Separation of Uncharged Pomalidomide Enantiomers Using Carboxymethyl-β-Cyclodextrin: A Validated Capillary Electrophoretic Method. Chirality 2015; 28:199-203. [PMID: 26708721 DOI: 10.1002/chir.22563] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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: 09/15/2015] [Revised: 10/28/2015] [Accepted: 11/12/2015] [Indexed: 12/18/2022]
Abstract
The racemic mixture of pomalidomide (POM), a second-generation immunomodulatory uncharged drug, was separated into enantiomers by capillary zone electrophoresis for the first time. Seven different chargeable cyclodextrin (CD) derivatives were screened as complexing agents and chiral selectors, investigating the stability of the POM-CD inclusion complexes and their enantiodiscriminating capacities. Based on preliminary experiments, carboxymethyl-β-CD (CM-β-CD) was found to be the most effective chiral selector. Factors influencing enantioseparation were systematically optimized, using an orthogonal experimental design. Optimal parameters (background electrolyte [BGE]: 50 mM Tris-acetate buffer, pH 6.5, containing 15 mM CM-β-CD; capillary temperature: 20°C; voltage applied +15 kV) allowed baseline separation of POM enantiomers with a resolution as high as 4.87. The developed method was validated, in terms of sensitivity (limit of detection and limit of quantification), linearity, accuracy, repeatability, and intermediate precision.
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Affiliation(s)
- Zoltán-István Szabó
- Faculty of Pharmacy, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Levente Szőcs
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Daniela-Lucia Muntean
- Faculty of Pharmacy, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Béla NoszáL
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
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62
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Affiliation(s)
- Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Ádám Jánoska
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Zoltán-István Szabó
- Department of Drugs Industry and Pharmaceutical Management, University of Medicine and Pharmacy, Tîrgu Mures, Romania
| | - Gergely Völgyi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Gábor Orgován
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin Research & Development Ltd, Budapest, Hungary
| | - Béla Noszál
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
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63
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Sólyomváry A, Mervai Z, Tóth G, Ress ÁE, Noszál B, Molnár-Perl I, Baghy K, Kovalszky I, Boldizsár I. A simple and effective enrichment process of the antiproliferative lignan arctigenin based on the endogenous enzymatic hydrolysis of Serratula tinctoria and Arctium lappa fruits. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.09.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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64
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Tóth G, Barabás C, Tóth A, Kéry Á, Béni S, Boldizsár I, Varga E, Noszál B. Characterization of antioxidant phenolics in Syringa vulgaris L. flowers and fruits by HPLC-DAD-ESI-MS. Biomed Chromatogr 2015; 30:923-32. [PMID: 26433204 DOI: 10.1002/bmc.3630] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 07/23/2015] [Revised: 09/09/2015] [Accepted: 10/01/2015] [Indexed: 11/06/2022]
Abstract
In this study the polyphenolic composition of lilac flowers and fruits was determined for the first time. For the identification of compounds, accurate molecular masses and formulas, acquired by LC and ESI-TOF-MS and fragmentation pattern given by LC-ESI/MS/MS analyses, were used. Our chromatographic system in conjunction with tandem MS was found to be valuable in the rapid separation and determination of the multiple constituents in methanolic extracts of lilac flowers and fruits. Altogether 34 phenolics, comprising 18 secoiridoids, seven phenylpropanoids, four flavonoids and five low-molecular-weight phenols, were identified. As marker compounds two secoiridoids (oleuropein and nuzhenide), two phenylpropanoids (acteoside and echinacoside) and rutin were quantified by validated methods. As a result of quantitative analysis, it was confirmed that flowers contain significant amounts of phenylpropanoids (acteoside, 2.48%; echinacoside, 0.75%) and oleuropein (0.95%), while in fruits secoiridoid oleuropein (1.09%) and nuzhenide (0.42%) are the major secondary metabolites. The radical scavenging activities of the extracts and the constituents were investigated by DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS [2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid)] assays. Both extracts show remarkable antioxidant activities. Our results clearly show that lilac flowers and fruits are inexpensive, readily available natural sources of phenolic compounds with pharmacological and cosmetic applications. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University; Research Group of Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes Endre u 9, Budapest, 1092, Hungary
| | - Csenge Barabás
- Department of Pharmacognosy and Phytotherapy, University of Medicine and Pharmacy, 38 Gh. Marinescu, 540139, Targu Mures, Romania
| | - Anita Tóth
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest, 1085, Hungary
| | - Ágnes Kéry
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest, 1085, Hungary
| | - Szabolcs Béni
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest, 1085, Hungary
| | - Imre Boldizsár
- Institute of Biology, Department of Plant Anatomy, L. Eötvös University, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary
| | - Erzsébet Varga
- Department of Pharmacognosy and Phytotherapy, University of Medicine and Pharmacy, 38 Gh. Marinescu, 540139, Targu Mures, Romania
| | - Béla Noszál
- Department of Pharmaceutical Chemistry, Semmelweis University; Research Group of Drugs of Abuse and Doping Agents, Hungarian Academy of Sciences, Hőgyes Endre u 9, Budapest, 1092, Hungary
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65
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Budroni C, Vitagliano G, Colangelo G, Sewell RJ, Gühne O, Tóth G, Mitchell MW. Quantum Nondemolition Measurement Enables Macroscopic Leggett-Garg Tests. Phys Rev Lett 2015; 115:200403. [PMID: 26613423 DOI: 10.1103/physrevlett.115.200403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Indexed: 06/05/2023]
Abstract
We show how a test of macroscopic realism based on Leggett-Garg inequalities (LGIs) can be performed in a macroscopic system. Using a continuous-variable approach, we consider quantum nondemolition (QND) measurements applied to atomic ensembles undergoing magnetically driven coherent oscillation. We identify measurement schemes requiring only Gaussian states as inputs and giving a significant LGI violation with realistic experimental parameters and imperfections. The predicted violation is shown to be due to true quantum effects rather than to a classical invasivity of the measurement. Using QND measurements to tighten the "clumsiness loophole" forces the stubborn macrorealist to recreate quantum backaction in his or her account of measurement.
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Affiliation(s)
- C Budroni
- Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Str. 3, D-57068 Siegen, Germany
| | - G Vitagliano
- Department of Theoretical Physics, University of the Basque Country UPV/EHU, P.O. Box 644, E-48080 Bilbao, Spain
| | - G Colangelo
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - R J Sewell
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - O Gühne
- Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Str. 3, D-57068 Siegen, Germany
| | - G Tóth
- Department of Theoretical Physics, University of the Basque Country UPV/EHU, P.O. Box 644, E-48080 Bilbao, Spain
- IKERBASQUE, Basque Foundation for Science, E-48013 Bilbao, Spain
- Wigner Research Centre for Physics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest, Hungary
| | - M W Mitchell
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
- ICREA-Institució Catalana de Recerca i Estudis Avançats, 08015 Barcelona, Spain
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Sághy É, Payrits M, Helyes Z, Reglődi D, Bánki E, Tóth G, Couvineau A, Szőke É. Stimulatory effect of pituitary adenylate cyclase-activating polypeptide 6-38, M65 and vasoactive intestinal polypeptide 6-28 on trigeminal sensory neurons. Neuroscience 2015; 308:144-56. [PMID: 26321242 DOI: 10.1016/j.neuroscience.2015.08.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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: 04/07/2015] [Revised: 07/31/2015] [Accepted: 08/20/2015] [Indexed: 02/08/2023]
Abstract
Pituitary adenylate cyclase-activating polypeptide (PACAP) acts on G protein-coupled receptors: the specific PAC1 and VPAC1/VPAC2 receptors. PACAP6-38 was described as a potent PAC1/VPAC2 antagonist in several models, but recent studies reported its agonistic behaviors proposing novel receptorial mechanisms. Since PACAP in migraine is an important research tool, we investigated the effect of PACAP and its peptide fragments on trigeminal primary sensory neurons. Effect of the peptides was studied with ratiometric Ca-imaging technique using the fluorescent indicator fura-2 AM on primary cultures of rat and mouse trigeminal ganglia (TRGs) neurons. Specificity testing was performed on PAC1, VPAC1 and VPAC2 receptor-expressing cell lines with both fluorescent and radioactive Ca-uptake methods. Slowly increasing intracellular free calcium concentration [Ca(2+)]i was detected after PACAP1-38, PACAP1-27, vasoactive intestinal polypeptide (VIP) and the selective PAC1 receptor agonist maxadilan administration on TRG neurons, but interestingly, PACAP6-38, VIP6-28 and the PAC1 receptor antagonist M65 also caused similar activation. The VPAC2 receptor agonist BAY 55-9837 induced similar activation, while the VPAC1 receptor agonist Ala(11,22,28)VIP had no significant effect on [Ca(2+)]i. It was proven that the Ca(2+)-influx originated from intracellular stores using radioactive calcium-45 uptake experiment and Ca-free solution. On the specific receptor-expressing cell lines the antagonists inhibited the stimulating actions of the respective agonists, but had no effects by themselves. PACAP6-38, M65 and VIP6-28, which were described as antagonists in numerous studies in several model systems, act as agonists on TRG primary sensory neurons. Currently unknown receptors or splice variants linked to distinct signal transduction pathways might explain these differences.
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MESH Headings
- Animals
- CHO Cells
- Calcium/metabolism
- Cells, Cultured
- Cricetulus
- Humans
- Insect Proteins/pharmacology
- Mice
- Peptide Fragments/pharmacology
- Pituitary Adenylate Cyclase-Activating Polypeptide/pharmacology
- Rats, Wistar
- Receptors, Vasoactive Intestinal Peptide, Type II/antagonists & inhibitors
- Receptors, Vasoactive Intestinal Peptide, Type II/metabolism
- Receptors, Vasoactive Intestinal Polypeptide, Type I/agonists
- Receptors, Vasoactive Intestinal Polypeptide, Type I/metabolism
- Sensory Receptor Cells/drug effects
- Sensory Receptor Cells/physiology
- Sensory System Agents/pharmacology
- TRPV Cation Channels/metabolism
- Trigeminal Ganglion/drug effects
- Trigeminal Ganglion/physiology
- Vasoactive Intestinal Peptide/pharmacology
- Voltage-Sensitive Dye Imaging
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Affiliation(s)
- É Sághy
- Department of Pharmacology and Pharmacotherapy, MTA-PTE Chronic Pain Research Group, Szentágothai Research Center, University of Pécs, Pécs-7624, Szigeti Street 12, Hungary.
| | - M Payrits
- Department of Pharmacology and Pharmacotherapy, MTA-PTE Chronic Pain Research Group, Szentágothai Research Center, University of Pécs, Pécs-7624, Szigeti Street 12, Hungary.
| | - Zs Helyes
- Department of Pharmacology and Pharmacotherapy, MTA-PTE Chronic Pain Research Group, Szentágothai Research Center, University of Pécs, Pécs-7624, Szigeti Street 12, Hungary.
| | - D Reglődi
- Department of Anatomy, MTA-PTE "Lendület" PACAP Research Team, University of Pécs, Pécs-7624, Szigeti Street 12, Hungary.
| | - E Bánki
- Department of Anatomy, MTA-PTE "Lendület" PACAP Research Team, University of Pécs, Pécs-7624, Szigeti Street 12, Hungary.
| | - G Tóth
- Department of Medical Chemistry, University of Szeged, Szeged-6720, Dugonics Street 13, Hungary.
| | - A Couvineau
- UMR 1149 INSERM/Centre de Recherche sur l'Inflammation, Université Paris Diderot, Faculte de Medecine Paris 7 - Site Bichat, 16 Rue Henri Huchard, 75890 Paris Cedex 18, France.
| | - É Szőke
- Department of Pharmacology and Pharmacotherapy, MTA-PTE Chronic Pain Research Group, Szentágothai Research Center, University of Pécs, Pécs-7624, Szigeti Street 12, Hungary.
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Szabó ZI, Tóth G, Völgyi G, Komjáti B, Hancu G, Szente L, Sohajda T, Béni S, Muntean DL, Noszál B. Chiral separation of asenapine enantiomers by capillary electrophoresis and characterization of cyclodextrin complexes by NMR spectroscopy, mass spectrometry and molecular modeling. J Pharm Biomed Anal 2015; 117:398-404. [PMID: 26440287 DOI: 10.1016/j.jpba.2015.09.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [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: 07/28/2015] [Revised: 09/14/2015] [Accepted: 09/17/2015] [Indexed: 11/16/2022]
Abstract
The enantiomers of asenapine maleate (ASN), a novel antipsychotic against schizophrenia and mania with bipolar I disorder have been separated by cyclodextrin (CD) modified capillary zone electrophoresis for the first time. 15 different CDs were screened as complexing agents and chiral selectors, investigating the stability of the inclusion complexes and their enantiodiscriminating capacities. Although initially, none of the applied chiral selectors gave baseline separation, β-CD proved to be the most effective chiral selector. In order to improve resolution, an orthogonal experimental design was employed, altering the concentration of background electrolyte, organic modifier, pH, capillary temperature and applied voltage in a multivariate manner. The developed method (160 mM TRIS-acetate buffer pH 3.5, 7 mM β-CD, at 20 °C, applying 15 kV) was successful for baseline separation of ASN enantiomers (R(s)=2.40±0.04). Our method was validated according to ICH guidelines and proved to be sensitive, linear, accurate and precise for the chiral separation of ASN. Properties of the inclusion complexes, such as stoichiometry, atomic level intermolecular host-guest connections are proposed on the basis of ROESY NMR measurement, ESI-MS spectrometry and molecular modeling studies. It was found that the ASN-β-CD complex is of 1:1 composition, and either of the aromatic rings can be accommodated in the β-CD cavity.
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Affiliation(s)
- Zoltán-István Szabó
- Faculty of Pharmacy, University of Medicine and Pharmacy of Tîrgu Mureș, Romania
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Gergely Völgyi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Balázs Komjáti
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Gabriel Hancu
- Faculty of Pharmacy, University of Medicine and Pharmacy of Tîrgu Mureș, Romania
| | - Lajos Szente
- Cyclolab Cyclodextrin Research & Development Laboratory Ltd, Budapest, Hungary
| | - Tamás Sohajda
- Cyclolab Cyclodextrin Research & Development Laboratory Ltd, Budapest, Hungary
| | - Szabolcs Béni
- Department of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | | | - Béla Noszál
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary.
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68
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Pitkänen O, Lorite GS, Shi G, Rautio AR, Uusimäki A, Vajtai R, Tóth G, Kordás K. The Effect of Al Buffer Layer on the Catalytic Synthesis of Carbon Nanotube Forests. Top Catal 2015. [DOI: 10.1007/s11244-015-0479-5] [Citation(s) in RCA: 5] [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: 10/23/2022]
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69
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Sólyomváry A, Tóth G, Komjáti B, Horváth P, Kraszni M, Noszál B, Molnár-Perl I, Boldizsár I. Identification and isolation of new neolignan and sesquineolignan species: Their acid-catalyzed ring closure and specific accumulation in the fruit wall of Cirsium eriophorum (L.) Scop. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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70
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Mervai Z, Sólyomváry A, Tóth G, Noszál B, Molnár-Perl I, Baghy K, Kovalszky I, Boldizsár I. Endogenous enzyme-hydrolyzed fruit of Cirsium brachycephalum: Optimal source of the antiproliferative lignan trachelogenin regulating the Wnt/β-Catenin signaling pathway in the SW480 colon adenocarcinoma cell line. Fitoterapia 2015; 100:19-26. [DOI: 10.1016/j.fitote.2014.10.017] [Citation(s) in RCA: 15] [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: 09/08/2014] [Revised: 10/22/2014] [Accepted: 10/26/2014] [Indexed: 10/24/2022]
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71
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Riethmüller E, Tóth G, Alberti A, Végh K, Béni S, Balogh GT, Kéry A. [Occurence of diarylheptanoids in Corylus species native to Hungary]. Acta Pharm Hung 2015; 85:29-38. [PMID: 26137784] [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: 06/04/2023]
Abstract
Since the last decade naturally occurring diarylheptanoids have been in the focus of scientific interest due to their various. beneficial biological effects. Besides the outstanding importance of the curcuminoids isolated from members of the Curcuma genus (Zingiberaceae), several different diarylheptanoids identified in Alnus species (Betulaceae) have been proved to possess notable pharmacological effects. Chemoprotective, neuroprotective, hepatoprotective, antiviral, antibacterial, antiinflammatory and antioxidant activities suggest their potential role in clinical practice. The aim of our study was the phytochemical investigation of the Corylus (Betulaceae) species native to Hungary: the Common hazel (Corylus avellana L.), the Turkish hazel (Corylus colurna L.) and the Filbert (Corylus maxima Mill.) in order to characterise their phenolic-profile. Although these plants have been used in traditional medicine for long time, literature data regarding their phytochemical composition is limited to the flavonoid and hydroxycinnamic-acid derivatives of C. avellana leaves. No previous studies have been published reporting the presence of diarylheptanoid compounds in any of the Corylus species. Soxhlet extraction with solvents of increasing polarity was performed on the bark and leaves of the mentioned three Corylus species. The phenolic-profile of the methanolic and ethyl acetate extracts was investigated by HPLC-DAD-ESI-TOF-MS and HPLC-DAD-ESI-MS/MS methods. Altogether 37 different phenolic compounds were detected in the extracts: twenty diarylheptanoids (1-20), nine flavonols (21-29) and eight other phenolics: caffeic and quinic acid derivatives and flavanones (30-37). The main compounds of the extracts were identified as myricetin- quercetin- and kaempferol-3-O-rhanmosides.
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72
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Tóth B, Weynants M, Nemes A, Makó A, Bilas G, Tóth G. New generation of hydraulic pedotransfer functions for Europe. Eur J Soil Sci 2015; 66:226-238. [PMID: 25866465 PMCID: PMC4386477 DOI: 10.1111/ejss.12192] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 08/11/2014] [Indexed: 05/28/2023]
Abstract
A range of continental-scale soil datasets exists in Europe with different spatial representation and based on different principles. We developed comprehensive pedotransfer functions (PTFs) for applications principally on spatial datasets with continental coverage. The PTF development included the prediction of soil water retention at various matric potentials and prediction of parameters to characterize soil moisture retention and the hydraulic conductivity curve (MRC and HCC) of European soils. We developed PTFs with a hierarchical approach, determined by the input requirements. The PTFs were derived by using three statistical methods: (i) linear regression where there were quantitative input variables, (ii) a regression tree for qualitative, quantitative and mixed types of information and (iii) mean statistics of developer-defined soil groups (class PTF) when only qualitative input parameters were available. Data of the recently established European Hydropedological Data Inventory (EU-HYDI), which holds the most comprehensive geographical and thematic coverage of hydro-pedological data in Europe, were used to train and test the PTFs. The applied modelling techniques and the EU-HYDI allowed the development of hydraulic PTFs that are more reliable and applicable for a greater variety of input parameters than those previously available for Europe. Therefore the new set of PTFs offers tailored advanced tools for a wide range of applications in the continent.
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Affiliation(s)
- B Tóth
- University of Pannonia, Georgikon Faculty, Department of Crop Production and Soil ScienceDeák F. u. 16, Keszthely, 8360, Hungary
| | - M Weynants
- European Commission, Joint Research Centre (JRC), Institute for Environment and Sustainability (IES), Land Resource Management Unit, Via Enrico Fermi 274921027 Ispra VA, Italy
| | - A Nemes
- Bioforsk, Soil and EnvironmentFrederik A. Dahls vei 20, Ås, 1430, Norway
| | - A Makó
- Hungarian Academy of Sciences, Centre for Agricultural Research, Institute for Soil Sciences and Agricultural ChemistryHerman Ottó út 15, Budapest, 1022, Hungary
| | - G Bilas
- Aristotle University of Thessaloniki, School of Agriculture, Lab of Applied Soil Science, University Campus, UB 25954124, Thessaloniki, Greece
| | - G Tóth
- European Commission, Joint Research Centre (JRC), Institute for Environment and Sustainability (IES), Land Resource Management Unit, Via Enrico Fermi 274921027 Ispra VA, Italy
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73
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Budai KA, Mirzahosseini A, Tóth G. [The pharmacotherapy of obesity]. Acta Pharm Hung 2015; 85:3-17. [PMID: 26137782] [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: 06/04/2023]
Abstract
Obesity is considered the most concerning and blatantly visible--yet most neglected--public health problem by the WHO. The steadily increasing number of overweight and obese people has reached 2.3 billion and 700 million worldwide, respectively. Obesity is a complex condition, one that presents serious health risks with respect to type 2 diabetes, ischemic heart disease, and hypertension, therefore controlling the global obesity epidemic decreases not only health problems, but also expenditure. The underlying cause of obesity is a metabolic disorder of genetic, central nervous system or endocrine etiology that manifests in increased nutritional intake and/or decreased physical activity ultimately leading to excessive lipogenesis. The natural treatment of obesity, that is often advised, is comprised of healthy lifestyle choices, namely low-calorie diet and exercise. However, the pharmaceutic treatment of obesity is just as important; having a better compliance rate, anti-obesity drugs also improve quality of life and patient-care outcome concerning accompanying diseases. In most countries only one drug is currently available against obesity: orlistat, which is a specific and irreversible lipase inhibitor. One of the reasons for the scarce number of anti-obesity drugs is the complex pathomechanism involved in obesity. Interference with the intricate biochemical processes that govern alimentation may lead to widespread adverse effects. The advances of the field however, have prompted novel drug leads. In the past few years FDA has approved new drugs for the treatment of obesity, recently liraglutide in 2014. The approval of drug combinations, such as phentermine/topiramate and bupropion/naltrexone are also noteworthy, the components of which have been previously approved, but not necessarily for obesity as main indication. Furthermore, there are many anti-obesity drug candidates currently in clinical phase trials, with promisingly modest adverse effect profiles; hence the expansion of the anti-obesity agents in the near future can be foreseen. The present work summarizes the central and peripheral regulatory pathways of energy consumption, nutrition, and appetite. The possible drug targets, the currently available and novel anti-obesity agents, and the new trends in obesity research are also discussed.
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74
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Riethmüller E, Tóth G, Alberti Á, Végh K, Burlini I, Könczöl Á, Balogh GT, Kéry Á. First characterisation of flavonoid- and diarylheptanoid-type antioxidant phenolics in Corylus maxima by HPLC-DAD-ESI-MS. J Pharm Biomed Anal 2014; 107:159-67. [PMID: 25594894 DOI: 10.1016/j.jpba.2014.12.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [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: 09/10/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 11/28/2022]
Abstract
Corylus maxima Mill. (Betulaceae) leaves have been used in traditional medicine both internally and externally, nevertheless phytochemical exploration of the plant remains incomplete. In this study, the in vitro antioxidant activity and polyphenolic composition of the ethyl acetate and methanolic extracts of C. maxima leaves and bark are reported for the first time. The radical scavenging activities of the extracts were investigated by the ABTS and DPPH assays. All the extracts of C. maxima possessed notable antioxidant activity. By mean of a HPLC-DAD-ESI-TOF and a HPLC-DAD-ESI-MS/MS method, altogether twenty-two phenolics were tentatively characterised: one flavan derivative (1), seven flavonol derivatives (4, 6, 12, 13, 16, 20 and 21) and fourteen diarylheptanoids (2, 3, 5, 7-11, 14, 15, 17-19 and 22). The amount of the two main flavonoids - myricetin-3-O-rhamnoside (6) and quercetin-3-O-rhamnoside (13) - and two diarylheptanoids - oregonin (3) and hirsutenone (15) - in the extracts were determined by a validated HPLC-ESI-MS/MS method in multiple reaction monitoring (MRM) mode. Our results showed that C. maxima could be considered as a valuable source of pharmacologically important natural products that might contribute to the revaluation of the phytotherapeutical potential of the plant.
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Affiliation(s)
- Eszter Riethmüller
- Department of Pharmacognosy, Semmelweis University, Budapest H-1085, Hungary; Compound Profiling Laboratory, Gedeon Richter Plc., Budapest H-1475, Hungary.
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest H-1092, Hungary
| | - Ágnes Alberti
- Department of Pharmacognosy, Semmelweis University, Budapest H-1085, Hungary
| | - Krisztina Végh
- Department of Pharmacognosy, Semmelweis University, Budapest H-1085, Hungary
| | - Ilaria Burlini
- Faculty of Pharmacy, University of Ferrara, Ferrara I-44121, Italy
| | - Árpád Könczöl
- Compound Profiling Laboratory, Gedeon Richter Plc., Budapest H-1475, Hungary
| | - György Tibor Balogh
- Compound Profiling Laboratory, Gedeon Richter Plc., Budapest H-1475, Hungary
| | - Ágnes Kéry
- Department of Pharmacognosy, Semmelweis University, Budapest H-1085, Hungary
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Tóth G, Sólyomváry A, Boldizsár I, Noszál B. Characterization of enzyme-catalysed endogenous β-hydroxylation of phenylethanoid glycosides in Euphrasia rostkoviana Hayne at the molecular level. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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76
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Veres Z, Ditrói J, Tóth G, Mester T, Lakatos G. The efficiency of municipal wastewater treatment with the reconstructed activated sludge method. J WATER CHEM TECHNO+ 2014. [DOI: 10.3103/s1063455x14030072] [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: 11/30/2022]
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77
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Darcsi A, Tóth G, Kökösi J, Béni S. Structure elucidation of a process-related impurity of dapoxetine. J Pharm Biomed Anal 2014; 96:272-7. [PMID: 24793500 DOI: 10.1016/j.jpba.2014.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 02/18/2014] [Revised: 03/31/2014] [Accepted: 04/03/2014] [Indexed: 10/25/2022]
Abstract
Unknown by-product associated with the synthesis of dapoxetine was isolated. The structure elucidation of this new compound using accurate mass data and NMR spectroscopy is presented herein. The unambiguous resonance assignment concluded to the formation of a tricyclic compound 4-phenyl-2H,3H,4H-naphtho[1,2-b]pyran, a new impurity of dapoxetine which has never been reported previously. A proposed mechanism for the formation of the new carbon-carbon bond is discussed. For the separation of dapoxetine and the process-related impurities, a gradient HPLC method was developed.
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Affiliation(s)
- András Darcsi
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre Street 9, H-1092 Budapest, Hungary
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre Street 9, H-1092 Budapest, Hungary
| | - József Kökösi
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre Street 9, H-1092 Budapest, Hungary
| | - Szabolcs Béni
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre Street 9, H-1092 Budapest, Hungary.
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78
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Szabó B, Kállai N, Tóth G, Hetényi G, Zelkó R. Drug release profiles and microstructural characterization of cast and freeze dried vitamin B12 buccal films by positron annihilation lifetime spectroscopy. J Pharm Biomed Anal 2014; 89:83-7. [DOI: 10.1016/j.jpba.2013.10.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 10/16/2013] [Accepted: 10/20/2013] [Indexed: 11/30/2022]
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Flemming G, Tóth G, Gebauer C, Schuster V. Crohn’s Disease in a Patient with Juvenile Idiopathic Arthritis after Starting Etanercept Therapy – Causal Link or Only Temporal Coincidence? Klin Padiatr 2013; 225:350-1. [DOI: 10.1055/s-0033-1355391] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- G. Flemming
- Hospital for Children and Adolescents, University of Leipzig, Germany
| | - G. Tóth
- Hospital for Children and Adolescents, University of Leipzig, Germany
| | - C. Gebauer
- Hospital for Children and Adolescents, University of Leipzig, Germany
| | - V. Schuster
- Hospital for Children and Adolescents, University of Leipzig, Germany
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80
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Riethmüller E, Alberti A, Tóth G, Béni S, Ortolano F, Kéry A. Characterisation of diarylheptanoid- and flavonoid-type phenolics in Corylus avellana L. leaves and bark by HPLC/DAD-ESI/MS. Phytochem Anal 2013; 24:493-503. [PMID: 23839957 DOI: 10.1002/pca.2452] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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: 08/01/2012] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 06/02/2023]
Abstract
INTRODUCTION The leaves of Corylus avellana L. (common hazel, Betulaceae), a plant with a wide distribution in Europe, have been used in folk medicine for various diseases, but phytochemical exploration of C. avellana is still incomplete. To the best of our knowledge there is no previous report concerning diarylheptanoids in C. avellana, although these compounds show a frequent occurrence among Betulaceae plants. OBJECTIVE To improve existing online chromatographic methods for the investigation of the phenolic compounds in C. avellana leaves and bark, focusing on diarylheptanoid-type molecules. METHODS Dried and powdered leaves and bark of C. avellana were extracted with increasing polarity solvents (n-hexane, chloroform, ethyl acetate and methanol) in Soxhlet extractor apparatus. For the characterisation of the phenolic compounds in the ethyl acetate and methanolic extracts, UV spectral data, obtained by LC with a diode-array detector (DAD), accurate molecular mass and formula, acquired by LC and electrospray ionisation (ESI) with time-of-flight (TOF) MS and fragmentation pattern, given by LC-ESI/MS/MS analyses were used. Quantitation of the compounds was performed by LC-MS/MS. RESULTS In the methanolic and ethyl acetate extracts of C. avellana bark four flavonoid glycosides and a caffeoyl hexoside derivative were detected and characterised, while in C. avellana leaves, seven diarylheptanoid-type molecules were tentatively identified in addition to six flavonoid components. As far as we know this is the first study where the presence of diarylheptanoids in C. avellana is reported. CONCLUSION The improved HPLC/DAD-ESI/MS method was successfully utilised for the characterisation and quantitation of the phenolic compounds in C. avellana bark and leaves extracts.
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Tóth G, Baska F, Schretner A, Rácz Á, Noszál B. Site-specific basicities regulate molecular recognition in receptor binding: in silico docking of thyroid hormones. Eur Biophys J 2013; 42:721-30. [DOI: 10.1007/s00249-013-0921-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/09/2013] [Accepted: 07/16/2013] [Indexed: 12/20/2022]
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82
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Pitkänen O, Halonen N, Leino AR, Mäklin J, Dombovári Á, Lin JH, Tóth G, Kordás K. Low-Temperature Growth of Carbon Nanotubes on Bi- and Tri-metallic Catalyst Templates. Top Catal 2013. [DOI: 10.1007/s11244-013-0047-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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83
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Tóth G, Végh ÁZ, Beszédes Á, Schrettner L, Gergely T, Gyimóthy T. Adjusting effort estimation using micro-productivity profiles. Proc Estonian Acad Sci 2013. [DOI: 10.3176/proc.2013.1.08] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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84
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Mazák K, Tóth G, Kökösi J, Noszál B. Thyroxine lipophilicity is dominated by its zwitterionic microspecies. Eur J Pharm Sci 2012; 47:921-5. [DOI: 10.1016/j.ejps.2012.09.009] [Citation(s) in RCA: 11] [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] [Received: 08/03/2012] [Revised: 09/17/2012] [Accepted: 09/18/2012] [Indexed: 10/27/2022]
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85
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Váradi A, Horváth P, Kurtán T, Mándi A, Tóth G, Gergely A, Kökösi J. Synthesis and configurational assignment of 1,2-dihydroimidazo[5,1-b]quinazoline-3,9-diones: novel NMDA receptor antagonists. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.086] [Citation(s) in RCA: 10] [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: 12/16/2022]
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86
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Váradi A, Lévai D, Tóth G, Horváth P, Noszál B, Hosztafi S. Glucosides of morphine derivatives: synthesis and characterization. Monatsh Chem 2012. [DOI: 10.1007/s00706-012-0868-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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87
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Boldizsár I, Kraszni M, Tóth F, Tóth G, Sólyomváry A, Noszál B, Záray G, Molnár-Perl I. The role of harmonized, gas and liquid chromatography mass spectrometry in the discovery of the neolignan balanophonin in the fruit wall of Cirsium vulgare. J Chromatogr A 2012; 1264:143-7. [DOI: 10.1016/j.chroma.2012.09.073] [Citation(s) in RCA: 11] [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] [Received: 04/07/2012] [Revised: 07/25/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
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88
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Szentirmay AK, Király KP, Lenkey N, Lackó E, Al-Khrasani M, Friedmann T, Timár J, Gyarmati S, Tóth G, Fürst S, Riba P. Spinal interaction between the highly selective μ agonist DAMGO and several δ opioid receptor ligands in naive and morphine-tolerant mice. Brain Res Bull 2012; 90:66-71. [PMID: 22995282 DOI: 10.1016/j.brainresbull.2012.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 09/10/2012] [Indexed: 12/11/2022]
Abstract
Since the discovery of opioid receptor dimers their possible roles in opioid actions were intensively investigated. Here we suggest a mechanism that may involve the μ-δ opioid heterodimers. The exact role of δ opioid receptors in antinociception and in the development of opioid tolerance is still unclear. While receptor up-regulation can be observed during the development of opioid tolerance no μ receptor down-regulation could be detected within five days. In our present work we investigated how the selective δ opioid receptor agonists and antagonists influence the antinociceptive effect of the selective μ receptor agonist DAMGO in naïve and morphine-tolerant mice. We treated male NMRI mice with 200 μmol/kg subcutaneous (s.c.) morphine twice daily for three days. On the fourth day we measured the antinociceptive effect of DAMGO alone and combined with delta ligands: DPDPE, deltorphin II (agonists), TIPP and TICPψ (antagonists), respectively, administered intrathecally (i.t.) in mouse tail-flick test. In naive control mice none of the δ ligands caused significant changes in the antinociceptive action of DAMGO. The treatment with s.c. morphine resulted in approximately four-fold tolerance to i.t. DAMGO, i.e. the ED₅₀ value of DAMGO was four times as high as in naive mice. 500 and 1000 pmol/mouse of the δ₁ selective agonist DPDPE enhanced the tolerance to DAMGO while 1000 pmol/mouse of the δ₂ selective agonist deltorphin II did not influence the degree of tolerance. However, both δ antagonists TIPP and TICPψ potentiated the antinociceptive effect of i.t. DAMGO, thus they restored the potency of DAMGO to the control level. The inhibitory action of DPDPE against the antinociceptive effect of DAMGO could be antagonized by TIPP and TICPψ. We hypothesize that during the development of morphine tolerance the formation of μδ heterodimers may contribute to the spinal opioid tolerance. δ ligands may affect the dimer formation differently. Those, like DPDPE may facilitate the dimer formation hence inhibit the antinociceptive effect of DAMGO by causing virtual μ receptor down-regulation. Ligands that do not affect the dimer formation do not influence antinociception either but ligands with the presumed capability of disconnecting the dimers may decrease the spinal tolerance to DAMGO.
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Affiliation(s)
- A K Szentirmay
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad Tér 4, P.O. Box 370, H-1445 Budapest, Hungary
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89
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Kovács G, Petrovszki Z, Mallareddy J, Tóth G, Benedek G, Horváth G. Characterization of antinociceptive potency of endomorphin-2 derivatives with unnatural amino acids in rats. ACTA ACUST UNITED AC 2012; 99:353-63. [DOI: 10.1556/aphysiol.99.2012.3.12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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90
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Molnár J, Tóth G, Stéger V, Zsolnai A, Jánosi A, Mohr A, Szántó-Egész R, Tóth P, Micsinai A, Rátky J, Marincs F. Mitochondrial D-loop analysis reveals low diversity in Mangalica pigs and their relationship to historical specimens. J Anim Breed Genet 2012; 130:312-20. [PMID: 23855633 DOI: 10.1111/j.1439-0388.2012.01014.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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: 02/23/2012] [Accepted: 06/04/2012] [Indexed: 11/28/2022]
Abstract
The genetic relationship between 195 Mangalica and 79 non-Mangalica pigs was studied using mitochondrial D-loop SNP genotyping. Altogether, 35 polymorphic sites and 27 haplotypes were identified. Of the haplotypes, eight and 16 are Mangalica and non-Mangalica specific, respectively, while three contain both Mangalica and non-Mangalica individuals. Genetic distance values and phylogenetic analysis indicate that Mangalica individuals are very closely related, and five haplotypes represent approximately 92% of the Mangalica pigs involved in the study, thus determining the major maternal lineages. In contrast to previous microsatellite studies, individuals of Mangalica could not be distinguished as three separate breeds using mtDNA genotyping. Comparing modern and archaeological mtDNA sequences revealed that present day Mangalica is related to pigs that lived in the Carpathian basin where postulated ancestors of Mangalica also lived. This is the first DNA-based genetic evidence to support the described breeding history of Mangalica.
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91
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92
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Tóth G, Hosztafi S, Kovács Z, Noszál B. The site-specific basicity of thyroid hormones and their precursors as regulators of their biological functions. J Pharm Biomed Anal 2012; 61:156-64. [DOI: 10.1016/j.jpba.2011.11.020] [Citation(s) in RCA: 10] [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] [Received: 10/29/2011] [Revised: 11/18/2011] [Accepted: 11/20/2011] [Indexed: 10/14/2022]
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93
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Neumajer G, Sohajda T, Darcsi A, Tóth G, Szente L, Noszál B, Béni S. Chiral recognition of dapoxetine enantiomers with methylated-gamma-cyclodextrin: a validated capillary electrophoresis method. J Pharm Biomed Anal 2012; 62:42-7. [PMID: 22280959 DOI: 10.1016/j.jpba.2011.12.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 12/23/2011] [Accepted: 12/24/2011] [Indexed: 11/15/2022]
Abstract
The enantiomers of dapoxetine, a serotonin transporter inhibitor for the treatment of premature ejaculation have been separated by cyclodextrin modified capillary zone electrophoresis using uncoated fused-silica capillary. Over 20 cyclodextrins were screened as chiral selectors, investigating the stability of the inclusion complexes and enantioseparating properties. According to the preliminary experiments as chiral selector randomly methylated-γ-cyclodextrin was chosen. The basic chemical and instrumental parameters of enantioseparation as concentration of buffer, chiral selector and organic additive, pH, temperature and applied voltage were optimized afterwards using an orthogonal experimental design. Using this methodology not only the optimal parameter values for chiral separation (15 °C, +15 kV, 70 mM acetate, 20 v/v% MeOH, pH*=4.5, 3 mM methylated-γ-CyD) but also the significance order of factors on resolution was determined. Applying these parameters an optimal resolution of 7.01 was achieved. The optimized method was then validated according to the ICH guideline Q2 (R1) with regard to repeatability, linearity range, LOD, LOQ, accuracy and robustness.
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Affiliation(s)
- Gábor Neumajer
- Semmelweis University, Department of Pharmaceutical Chemistry, Hőgyes Endre u. 9, Budapest H-1092, Hungary
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94
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Telegdy G, Kádár K, Tóth G. Anxiolytic action of urocortin 3 fragments in mice. Behav Brain Res 2011; 222:295-8. [PMID: 21457730 DOI: 10.1016/j.bbr.2011.03.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 02/26/2011] [Accepted: 03/20/2011] [Indexed: 11/24/2022]
Abstract
In the present experiments, the anxiolytic action of Ucn 3 fragments were studied in an elevated plus maze in mice following icv administration in an attempt to identify the biologically active center of the molecule. Ucn 3, Ucn 3 (18-38), Ucn 3 (19-27), Ucn 3 (28-38), Ucn 3 (34-38), and Ucn 3 (36-38) but not Ucn 3 (34-36), demonstrated anxiolytic action by increasing the time the mice spent in open arms, and Ucn 3 and Ucn 3 (34-38) did so by increasing the number of entries into open arms. The shortest molecule which elicited anxiolytic effects was the tripeptide Ucn 3 (36-38), H-Ala-Gln-Ile-NH(2). The results indicate that the total sequence of Ucn 3 is not necessary for the anxiolytic action of Ucn 3. Establishment the smallest active sequence of Ucn 3 will allow the synthesis of analogs or mimetics for anxiolytic action.
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Affiliation(s)
- G Telegdy
- University of Szeged, Faculty of Medicine, Department of Pathophysiology, Semmelweis 1, Szeged, Hungary.
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95
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Tanaka M, Kádár K, Tóth G, Telegdy G. Antidepressant-like effects of urocortin 3 fragments. Brain Res Bull 2011; 84:414-8. [PMID: 21295118 DOI: 10.1016/j.brainresbull.2011.01.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 12/14/2010] [Accepted: 01/24/2011] [Indexed: 10/18/2022]
Abstract
Urocortin 3 (Ucn 3) and various Ucn 3 fragments were tested with regard to antidepressive action in a modified forced swimming test following icv administration to mice. The fragment Ucn 3 (34-36) proved ineffective, whereas Ucn 3 (18-38), Ucn 3 (19-27), Ucn 3 (28-38), Ucn 3 (34-38), and Ucn 3 (36-38) demonstrated antidepressive-like action by shortening the immobility time and increasing the climbing and swimming times. The shortest molecule which elicited most of the antidepressive effects was the tripeptide Ucn 3 (36-38), H-Ala-Gln-Ile-NH(2). The results indicate that the total sequence of Ucn 3 is not necessary for the antidepressive action of Ucn 3. Furthermore, the antidepressant actions of Unc3 (19-27) and Ucn 3 (36-38) can be blocked by the CRF2 receptor antagonist Astressin 2β. Establishment of the smallest active sequence of the molecule may allow the synthesis of analogs or mimetics for antidepressive drugs.
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Affiliation(s)
- M Tanaka
- Department of Pathophysiology, Faculty of Medicine, University of Szeged, Semmelweis 1, Szeged, Hungary
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96
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Kukkola J, Jansson E, Popov A, Lappalainen J, Mäklin J, Halonen N, Tóth G, Shchukarev A, Mikkola JP, Jantunen H, Kordás K, Hast J, Hassinen T, Sunnari A, Jokinen K, Haverinen H, Sliz R, Jabbour G, Fabritius T, Myllylä R, Vasiliev A, Zaretskiy N. Novel Printed Nanostructured Gas Sensors. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.proeng.2011.12.220] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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97
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Tóth G, Wieczorek W, Gross D, Krischek R, Schwemmer C, Weinfurter H. Permutationally invariant quantum tomography. Phys Rev Lett 2010; 105:250403. [PMID: 21231565 DOI: 10.1103/physrevlett.105.250403] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Revised: 08/30/2010] [Indexed: 05/30/2023]
Abstract
We present a scalable method for the tomography of large multiqubit quantum registers. It acquires information about the permutationally invariant part of the density operator, which is a good approximation to the true state in many relevant cases. Our method gives the best measurement strategy to minimize the experimental effort as well as the uncertainties of the reconstructed density matrix. We apply our method to the experimental tomography of a photonic four-qubit symmetric Dicke state.
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Affiliation(s)
- G Tóth
- Department of Theoretical Physics, The University of the Basque Country, P.O. Box 644, E-48080 Bilbao, Spain
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98
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Csiky B, Nyul Z, Tóth G, Wittmann I, Melegh B, Rauh M, Rascher W, Sulyok E. L-Carnitine Supplementation and Adipokines in Patients with End-Stage Renal Disease on Regular Hemodialysis. Exp Clin Endocrinol Diabetes 2010; 118:735-40. [DOI: 10.1055/s-0030-1261912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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99
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Glocer A, Tóth G, Ma Y, Gombosi T, Zhang JC, Kistler LM. Multifluid Block-Adaptive-Tree Solar wind Roe-type Upwind Scheme: Magnetospheric composition and dynamics during geomagnetic storms-Initial results. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009ja014418] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - G. Tóth
- Department of Atmospheric Oceanic and Space Science; University of Michigan; Ann Arbor Michigan USA
| | - Y. Ma
- Institute of Geophysics and Planetary Physics; UCLA; Los Angeles California USA
| | - T. Gombosi
- Department of Atmospheric Oceanic and Space Science; University of Michigan; Ann Arbor Michigan USA
| | - J.-C. Zhang
- Space Science Center; University of New Hampshire; Durham New Hampshire USA
| | - L. M. Kistler
- Space Science Center; University of New Hampshire; Durham New Hampshire USA
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100
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Kiss M, Ekk I, Tóth G, Szabó S, Nowinszky L. Common effect of geomagnetism and change of moon phases on light-trap catches of fall webworm moth (Hyphantria cunea Drury). ACTA ACUST UNITED AC 2009. [DOI: 10.1111/j.1439-0418.1981.tb04496.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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