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Gnecchi-Ruscone GA, Szécsényi-Nagy A, Koncz I, Csiky G, Rácz Z, Rohrlach AB, Brandt G, Rohland N, Csáky V, Cheronet O, Szeifert B, Rácz TÁ, Benedek A, Bernert Z, Berta N, Czifra S, Dani J, Farkas Z, Hága T, Hajdu T, Jászberényi M, Kisjuhász V, Kolozsi B, Major P, Marcsik A, Kovacsóczy BN, Balogh C, Lezsák GM, Ódor JG, Szelekovszky M, Szeniczey T, Tárnoki J, Tóth Z, Tutkovics EK, Mende BG, Geary P, Pohl W, Vida T, Pinhasi R, Reich D, Hofmanová Z, Jeong C, Krause J. Ancient genomes reveal origin and rapid trans-Eurasian migration of 7 th century Avar elites. Cell 2022; 185:1402-1413.e21. [PMID: 35366416 PMCID: PMC9042794 DOI: 10.1016/j.cell.2022.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/28/2022] [Accepted: 03/04/2022] [Indexed: 12/12/2022]
Abstract
The Avars settled the Carpathian Basin in 567/68 CE, establishing an empire lasting over 200 years. Who they were and where they came from is highly debated. Contemporaries have disagreed about whether they were, as they claimed, the direct successors of the Mongolian Steppe Rouran empire that was destroyed by the Turks in ∼550 CE. Here, we analyze new genome-wide data from 66 pre-Avar and Avar-period Carpathian Basin individuals, including the 8 richest Avar-period burials and further elite sites from Avar's empire core region. Our results provide support for a rapid long-distance trans-Eurasian migration of Avar-period elites. These individuals carried Northeast Asian ancestry matching the profile of preceding Mongolian Steppe populations, particularly a genome available from the Rouran period. Some of the later elite individuals carried an additional non-local ancestry component broadly matching the steppe, which could point to a later migration or reflect greater genetic diversity within the initial migrant population.
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Affiliation(s)
| | - Anna Szécsényi-Nagy
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, 1097 Budapest, Hungary
| | - István Koncz
- Institute of Archaeological Sciences, ELTE Eötvös Loránd University, 1088 Budapest, Hungary
| | - Gergely Csiky
- Institute of Archaeology, Research Centre for the Humanities, Eötvös Loránd Research Network, 1097 Budapest, Hungary
| | - Zsófia Rácz
- Institute of Archaeological Sciences, ELTE Eötvös Loránd University, 1088 Budapest, Hungary
| | - A B Rohrlach
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany; ARC Centre of Excellence for Mathematical and Statistical Frontiers, School of Mathematical Sciences, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Guido Brandt
- Max Planck Institute for the Science of Human History, 07745 Jena, Germany
| | - Nadin Rohland
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Veronika Csáky
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, 1097 Budapest, Hungary
| | - Olivia Cheronet
- Department of Evolutionary Anthropology, University of Vienna, 1030 Vienna, Austria
| | - Bea Szeifert
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, 1097 Budapest, Hungary
| | | | | | | | | | | | | | | | | | - Tamás Hajdu
- Dept. of Biological Anthropology, Eötvös Loránd University (ELTE), 1117 Budapest, Hungary
| | | | | | | | | | - Antónia Marcsik
- Dept. of Biological Anthropology, Szeged University, 6701 Szeged, Hungary
| | | | - Csilla Balogh
- Department of Art History, Istanbul Medeniyet University, 34720 Istanbul, Turkey
| | - Gabriella M Lezsák
- Research Centre for the Humanities, Eötvös Loránd Research Network, 1097 Budapest, Hungary
| | | | | | - Tamás Szeniczey
- Dept. of Biological Anthropology, Eötvös Loránd University (ELTE), 1117 Budapest, Hungary
| | | | | | | | - Balázs G Mende
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, 1097 Budapest, Hungary
| | - Patrick Geary
- Institute for Advanced Study, Princeton, NJ 08540, USA
| | - Walter Pohl
- Institute for Medieval Research, Austrian Academy of Sciences, 1020 Vienna, Austria; Institute of Austrian Historical Research, University of Vienna, 1010 Vienna, Austria
| | - Tivadar Vida
- Institute of Archaeological Sciences, ELTE Eötvös Loránd University, 1088 Budapest, Hungary
| | - Ron Pinhasi
- Department of Evolutionary Anthropology, University of Vienna, 1030 Vienna, Austria
| | - David Reich
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Human Evolutionary Biology, Cambridge, MA 02138, USA; Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Zuzana Hofmanová
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany; Department of Archaeology and Museology, Faculty of Arts, Masaryk University, 60200 Brno, Czech Republic
| | - Choongwon Jeong
- School of Biological Sciences, Seoul National University, 08826 Seoul, Republic of Korea.
| | - Johannes Krause
- Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany.
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Benedek T, Ferent I, Benedek A, Cernica D, Nita C, Puiu A, Itu L, Rapaka S, Puneet S, Benedek IS. P1434 Evolution of coronary wall shear stress following implantation of bioabsorbable vascular scaffolds - first results of a 1-year follow-up pilot study. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
This research has been funded by the research grant PlaqueImage, contract number 26/01.09.2016, SMIS code 103544, Project funded by the European Union
Aims
Coronary shear stress (CSS) has been recently recognized to play a significant role in coronary plaque progression and vulnerabilisation. However, the evolution of CSS after implantation of different types of coronary stents is still under investigation. The aim of this study was to assess the evolution of the CSS along the coronary lesions following implantation of bioabsorbable vascular scaffolds (BVS), to determine the impact of BVS on coronary flow haemodynamics.
Methods and results
This was a single center prospective pilot study which enrolled 15 patients (aged 58.35 +/- 7.79 years, 13 males) with coronary artery disease undergoing BVS implantation in a major epicardial vessel. In all patients, angio CT scanning (Siemens Somatom Sensation scanner, Erlangen, Germany) was performed prior to the BVS implantation and repeated after 12 months. Lumen information was extracted from the vessels of interest and coronary rest hemodynamics, including CSS, were calculated using a computational fluid dynamics solver. All shear stress calculations were performed at baseline and repeated after 1 year. Average CSS was determined proximally, distally, and at the level of the minimal lumen area (MLA). Average CSS along the stented segment significantly decreased after BVS implantation, from 2.87 +/- 1.64 Pa at baseline to 1.9 +/- 0.49 at 1 year (p = 0.0001). Maximum CSS along the segment also exhibited a significant decrease, from 11.78 +/- 10.06 Pa to 6.35 +/- 3.08 Pa (p = 0.0009). Proximally to the MLA, CSS significantly decreased after BVS implantation, from 3.39 +/- 1.93 Pa at baseline to 1.91 +/- 0.68 Pa at 1 year (p <0.0001). However, this decrease in CSS was not significant distally to the MLA (1.3 +/- 0.72 Pa vs 1.59 +/- 0.65 Pa, p = 0.9).
Conclusions
Implantation of BVS leads to a significant decrease of CSS after 1 year, especially within coronary segments located proximally to the stenosis. This underlines the role of BVS in re-establishing a physiological pattern of coronary flow in diseased coronary vessels. The feature (mentioned herein) is not commercially available. Due to regulatory reasons its future availability cannot be guaranteed.
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Affiliation(s)
- T Benedek
- University of Medicine of Targu Mures, Center of Advanced Research in Multimodal Cardiac Imaging Cardiomed, Targu Mures, Romania
| | - I Ferent
- University of Medicine of Targu Mures, Center of Advanced Research in Multimodal Cardiac Imaging Cardiomed, Targu Mures, Romania
| | - A Benedek
- University of Medicine of Targu Mures, Center of Advanced Research in Multimodal Cardiac Imaging Cardiomed, Targu Mures, Romania
| | - D Cernica
- University of Medicine of Targu Mures, Center of Advanced Research in Multimodal Cardiac Imaging Cardiomed, Targu Mures, Romania
| | - C Nita
- Siemens SRL, Corporate Technology, Brasov, Romania
| | - A Puiu
- Siemens SRL, Corporate Technology, Brasov, Romania
| | - L Itu
- Siemens SRL, Corporate Technology, Brasov, Romania
| | - S Rapaka
- Digital Services, Digital Technology & Innovation, Siemens Healthineers, Princeton, United States of America
| | - S Puneet
- Digital Services, Digital Technology & Innovation, Siemens Healthineers, Princeton, United States of America
| | - I S Benedek
- University of Medicine of Targu Mures, Center of Advanced Research in Multimodal Cardiac Imaging Cardiomed, Targu Mures, Romania
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Mester A, Benedek T, Opincariu D, Benedek A, Ratiu M, Hodas R, Cernica D, Kovacs I, Rat N, Chitu M, Benedek I. P1437 Integrated ST segment elevation score as a new predictor of the myocardial scar extent determined with LGE-CMR at 1-month follow-up after STEMI. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Funded by the research grant PlaqueImage, contract number 26/01.09.2016, SMIS code 103544, by the European Union and the Government of Romania
Background
The inflammatory response in the acute phase of a myocardial infarction, as well as in later phases contributes to the healing process of the infarcted myocardium and the left ventricular remodeling. Restoration and improvement of LV function highly depends on the magnitude of scar formation. Late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) imaging has been validated for an accurate determination of the myocardial scar size and transmurality. The recovery of ST segment elevation is a liable marker of vessel patency following PCI.
Purpose
The aim of the study was to validate a new integrated score of ST segment elevation score (ISSTE) as a new predictor of the myocardial scar tissue size, in relation with increased inflammatory biomarkers, with the extent of myocardial fibrosis at one month, assessed with LGE-CMR, after STEMI.
Methods
We included 65 patients with STEMI who underwent urgent revascularization with PCI in the first 12 hours from the onset of symptoms. The ISSTE was determined by summing the ST segment elevation in all registered ECG leads at presentation (ISSTE-1) and at 2 hours (ISSTE-2) after primary PCI. Blood samples were also collected at baseline and day-5 for determination of serum hs-CRP levels. At 1-month follow-up all patients under LGE-CMR (1.5T scanner) for evaluation of the myocardial scar extent (volume, percentage, transmurality).
Results
ISSTE-2 was significantly correlated with day-5 hs-CRP serum levels (r = 0.546, 95%CI: 0.030-0.832, p = 0.037), although no significant correlations were noted with baseline hs-CRP levels (r= 0.238, p = 0.407). There were no significant correlations between ISSTE-1 score and the myocardial scar percentage (r = 0.241, p = 0.11) or high transmurality volume (r = 0.194, p = 0.21), while ISSTE-2 significantly correlated with myocardial scar mass (r = 0.406, 95%CI: 0.107-0.637 p = 0.007) and high transmurality volume (r = 0.344, 95%CI: 0.0320-0.596, p = 0.0273). The restoration of the ST segment, reflected by the difference between ISSTE-1 and ISSTE -2 is correlated with the infarct size mass (r = 0.336, 95%CI: 0.0307 -0.584, p = 0.027).
Conclusion
The magnitude of ST segment elevation determined at 2 hours after PCI was associated with the inflammatory response at day 5 after STEMI and it may serve as a predictor for the extent of the myocardial scar tissue determined with LGE-CMR at 1 month following STEMI. The ISSTE-1 score calculated at presentation does not reflect extent of the affected myocardial tissue following PCI.
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Affiliation(s)
- A Mester
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - T Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - D Opincariu
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - A Benedek
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - M Ratiu
- Cardiomed Center of Advanced Research in Multimodality Cardiac Imaging, Targu-Mures, Romania
| | - R Hodas
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - D Cernica
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - I Kovacs
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - N Rat
- Cardiomed Center of Advanced Research in Multimodality Cardiac Imaging, Targu-Mures, Romania
| | - M Chitu
- Cardiomed Center of Advanced Research in Multimodality Cardiac Imaging, Targu-Mures, Romania
| | - I Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
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Mester A, Benedek T, Ratiu M, Morariu M, Benedek A, Hodas R, Opincariu D, Rat N, Chitu M, Benedek I. 490Persistently increased inflammatory status in the first days post MI is associated with larger myocardial scar, higher transmurality extent and deterioration of ventricular function at 1 month. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez123.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- A Mester
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - T Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - M Ratiu
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - M Morariu
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - A Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - R Hodas
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - D Opincariu
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - N Rat
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - M Chitu
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - I Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
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Benedek A, Pölöskei I, Ozohanics O, Vékey K, Vértessy BG. The Stl repressor from Staphylococcus aureus is an efficient inhibitor of the eukaryotic fruitfly dUTPase. FEBS Open Bio 2017; 8:158-167. [PMID: 29435406 PMCID: PMC5794464 DOI: 10.1002/2211-5463.12302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 05/15/2017] [Revised: 06/25/2017] [Accepted: 06/30/2017] [Indexed: 11/17/2022] Open
Abstract
DNA metabolism and repair is vital for the maintenance of genome integrity. Specific proteinaceous inhibitors of key factors in this process have high potential for deciphering pathways of DNA metabolism and repair. The dUTPase enzyme family is responsible for guarding against erroneous uracil incorporation into DNA. Here, we investigate whether the staphylococcal Stl repressor may interact with not only bacterial but also eukaryotic dUTPase. We provide experimental evidence for the formation of a strong complex between Stl and Drosophila melanogasterdUTPase. We also find that dUTPase activity is strongly diminished in this complex. Our results suggest that the dUTPase protein sequences involved in binding to Stl are at least partially conserved through evolution from bacteria to eukaryotes.
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Affiliation(s)
- András Benedek
- Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary.,Department of Applied Biotechnology Budapest University of Technology and Economics Hungary
| | - István Pölöskei
- Department of Applied Biotechnology Budapest University of Technology and Economics Hungary
| | - Olivér Ozohanics
- Institute of Organic Chemistry Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Károly Vékey
- Institute of Organic Chemistry Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Beáta G Vértessy
- Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary.,Department of Applied Biotechnology Budapest University of Technology and Economics Hungary
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6
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Depuydt J, Baeyens A, Barnard S, Beinke C, Benedek A, Beukes P, Buraczewska I, Darroudi F, De Sanctis S, Dominguez I, Monteiro Gil O, Hadjidekova V, Kis E, Kulka U, Lista F, Lumniczky K, M’kacher R, Moquet J, Obreja D, Oestreicher U, Pajic J, Pastor N, Popova L, Regalbuto E, Ricoul M, Sabatier L, Slabbert J, Sommer S, Testa A, Thierens H, Wojcik A, Vral A. O42. Realizing the European Network of Biological Dosimetry ‘RENEB’: Results of 2 intercomparison exercises for the micronucleus assay. Phys Med 2016. [DOI: 10.1016/j.ejmp.2016.07.050] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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7
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Benedek A, Horváth A, Hirmondó R, Ozohanics O, Békési A, Módos K, Révész Á, Vékey K, Nagy GN, Vértessy BG. Potential steps in the evolution of a fused trimeric all-β dUTPase involve a catalytically competent fused dimeric intermediate. FEBS J 2016; 283:3268-86. [PMID: 27380921 DOI: 10.1111/febs.13800] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 07/25/2015] [Revised: 06/08/2016] [Accepted: 07/04/2016] [Indexed: 12/15/2022]
Abstract
Deoxyuridine 5'-triphosphate nucleotidohydrolase (dUTPase) is essential for genome integrity. Interestingly, this enzyme from Drosophila virilis has an unusual form, as three monomer repeats are merged with short linker sequences, yielding a fused trimer-like dUTPase fold. Unlike homotrimeric dUTPases that are encoded by a single repeat dut gene copy, the three repeats of the D. virilis dut gene are not identical due to several point mutations. We investigated the potential evolutionary pathway that led to the emergence of this extant fused trimeric dUTPase in D. virilis. The herein proposed scenario involves two sequential gene duplications followed by sequence divergence amongst the dut repeats. This pathway thus requires the existence of a transient two-repeat-containing fused dimeric dUTPase intermediate. We identified the corresponding ancestral dUTPase single repeat enzyme together with its tandem repeat evolutionary intermediate and characterized their enzymatic function and structural stability. We additionally engineered and characterized artificial single or tandem repeat constructs from the extant enzyme form to investigate the influence of the emergent residue alterations on the formation of a functional assembly. The observed severely impaired stability and catalytic activity of these latter constructs provide a plausible explanation for evolutionary persistence of the extant fused trimeric D. virilis dUTPase form. For the ancestral homotrimeric and the fused dimeric intermediate forms, we observed strong catalytic and structural competence, verifying viability of the proposed evolutionary pathway. We conclude that the progression along the herein described evolutionary trajectory is determined by the retained potential of the enzyme for its conserved three-fold structural symmetry.
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Affiliation(s)
- András Benedek
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary. .,Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Hungary.
| | - András Horváth
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Rita Hirmondó
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Olivér Ozohanics
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Angéla Békési
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Károly Módos
- Institute of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Ágnes Révész
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Károly Vékey
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Gergely N Nagy
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary. .,Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Hungary.
| | - Beáta G Vértessy
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary. .,Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Hungary.
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8
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Slama A, Barta M, Schillab L, Mitterbauer A, Benedek A, Hoetzenecker K, Scheed A, Lang G, Matilla J, Taghavi S, Jaksch P, Klepetko W, Aigner C. F-129PHYSIOLOGICAL ASSESSMENT AND CLINICAL OUTCOMES OF EX-VIVO PERFUSED MARGINAL DONOR LUNGS. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.129] [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: 11/14/2022] Open
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9
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Róna G, Pálinkás HL, Borsos M, Horváth A, Scheer I, Benedek A, Nagy GN, Zagyva I, Vértessy BG. NLS copy-number variation governs efficiency of nuclear import - case study on dUTPases. FEBS J 2014; 281:5463-78. [DOI: 10.1111/febs.13086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 09/10/2014] [Accepted: 09/29/2014] [Indexed: 12/11/2022]
Affiliation(s)
- Gergely Róna
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
- Department of Applied Biotechnology and Food Sciences; Budapest University of Technology and Economics; Hungary
| | - Hajnalka L. Pálinkás
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
- Doctoral School of Multidisciplinary Medical Science; University of Szeged; Hungary
| | - Máté Borsos
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - András Horváth
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - Ildikó Scheer
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
- Department of Applied Biotechnology and Food Sciences; Budapest University of Technology and Economics; Hungary
| | - András Benedek
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
- Department of Applied Biotechnology and Food Sciences; Budapest University of Technology and Economics; Hungary
| | - Gergely N. Nagy
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
- Department of Applied Biotechnology and Food Sciences; Budapest University of Technology and Economics; Hungary
| | - Imre Zagyva
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - Beáta G. Vértessy
- Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
- Department of Applied Biotechnology and Food Sciences; Budapest University of Technology and Economics; Hungary
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11
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Gigler G, Móricz K, ágoston M, Simó A, Albert M, Benedek A, Kapus G, Kertész S, Vegh M, Barkóczy J, Markó B, Szabó G, Matucz É, Gacsályi I, Lévay G, Hársing LG, Szénási G. Neuroprotective and anticonvulsant effects of EGIS-8332, a non-competitive AMPA receptor antagonist, in a range of animal models. Br J Pharmacol 2007; 152:151-60. [PMID: 17603549 PMCID: PMC1978282 DOI: 10.1038/sj.bjp.0707362] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE Blockade of AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptors is a good treatment option for a variety of central nervous system disorders. The present study evaluated the neuroprotective and anticonvulsant effects of EGIS-8332, a non-competitive AMPA receptor antagonist, as a potential drug candidate. EXPERIMENTAL APPROACH AMPA antagonist effects of EGIS-8332 were measured using patch-clamp techniques. Neuroprotective and anticonvulsant effects of EGIS-8332 were evaluated in various experimental models, relative to those of GYKI 53405. KEY RESULTS EGIS-8332 inhibited AMPA currents in rat cerebellar Purkinje cells and inhibited the AMPA- and quisqualate-induced excitotoxicity in primary cultures of telencephalon neurons (IC(50)=5.1-9.0 microM), in vitro. Good anticonvulsant actions were obtained in maximal electroshock-, sound- and chemically-induced seizures (range of ED(50)=1.4-14.0 mg kg(-1) i.p.) in mice. Four days after transient global cerebral ischaemia, EGIS-8332 decreased neuronal loss in the hippocampal CA1 area in gerbils and rats. EGIS-8332 dose-dependently reduced cerebral infarct size after permanent middle cerebral artery occlusion in mice and rats (minimum effective dose=3 mg kg(-1) i.p.). Side effects of EGIS-8332 emerged much above its pharmacologically active doses. A tendency for better efficacy of GYKI 53405 than that of EGIS-8332 was observed in anticonvulsant tests that reached statistical significance in few cases, while the contrary was perceived in cerebral ischaemia tests. CONCLUSIONS AND IMPLICATIONS EGIS-8332 seems suitable for further development for the treatment of epilepsy, ischaemia and stroke based on its efficacy in a variety of experimental disease models, and on its low side effect potential.
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Affiliation(s)
- G Gigler
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - K Móricz
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - M ágoston
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - A Simó
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - M Albert
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - A Benedek
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - G Kapus
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - S Kertész
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - M Vegh
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - J Barkóczy
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - B Markó
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - G Szabó
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - É Matucz
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - I Gacsályi
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - G Lévay
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - L G Hársing
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
| | - G Szénási
- Division of Preclinical Research, EGIS Pharmaceuticals PLC Budapest, Hungary
- Author for correspondence:
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Kovács GG, Andó RD, Adori C, Kirilly E, Benedek A, Palkovits M, Bagdy G. Single dose of MDMA causes extensive decrement of serotoninergic fibre density without blockage of the fast axonal transport in Dark Agouti rat brain and spinal cord. Neuropathol Appl Neurobiol 2007; 33:193-203. [PMID: 17359360 DOI: 10.1111/j.1365-2990.2006.00790.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Prolonged neurotoxicity of the recreational drug, MDMA (3,4-methylenedioxymethamphetamine) on serotoninergic axon terminals has been suggested. The effect of a single (15 mg/kg) dose of intraperitoneally administered MDMA on serotoninergic fibre density, defined by tryptophan hydroxylase (TpH) and serotonin transporter (5-HTT) immunoreactivity, has been evaluated in the spinal cord and brain areas in Dark Agouti rats, 7 and 180 days after MDMA applications. Immunostaining for amyloid precursor protein (APP) has been performed to examine possible defects of the fast axonal transport, and 5-HTT mRNA expressions were quantified in neurones of medullary raphe nuclei. Seven days after MDMA treatment, a substantial decrease in the density of TpH-immunoreactive fibres was detectable in the frontal cortex, the caudate-putamen, the CA1 region of the hippocampus, and marked decreases were found in the spinal cord. These changes in TpH density showed a high correlation with 5-HTT densities. In contrast, APP-immunoreactive axonal bulbs were not detected in any of the brain regions studied. Seven days after MDMA administrations, significantly elevated 5-HTT mRNA expressions were found in the raphe pallidus and obscurus. Our results suggest that a single dose of MDMA elicits widespread depletion of TpH and 5-HTT immunoreactivity in serotoninergic axons without morphological sign of the blockage of the fast anterograde axonal transport. Our results do not support the notion of MDMA-induced axotomy of serotoninergic neurones. The up-regulation of 5-HTT mRNA expressions 1 week after MDMA injections might indicate the potential recovery of the serotonin system.
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Affiliation(s)
- G G Kovács
- Department of Neuropathology, National Institute of Psychiatry and Neurology, Budapest, Hungary
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Kim CJ, Hamielec AE, Benedek A. Characterization of Dextrans by Size Exclusion Chromatography Using DRI/LALLSP Detector System. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918208066906] [Citation(s) in RCA: 10] [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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14
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Kim CJ, Hamielec AE, Benedek A. Characterization of Nonionic Polyacrylamides by Aqueous Size Exclusion Chromatography Using a DRI/LALLSP Detector System. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918208067587] [Citation(s) in RCA: 7] [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: 10/23/2022]
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Affiliation(s)
- A Benedek
- DEPARTMENT OF MATHEMATICS, UNIVERSITY OF CHICAGO
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Curteanu G, Benedek A. [Tumors of the small intestine. Anatomico-clinical considerations in 4 cases]. Rev Pediatr Obstet Ginecol Pediatr 1989; 38:53-60. [PMID: 2505361] [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: 01/01/2023]
Abstract
The present paper concerns with the problem of small intestine tumours in children, describing certain particularities. There were three lymphoblastic lymphomas and a cavernous hemangioma. Stress is laid on the rare incidence, the prevalent age, selective localization morpho-clinical forms, diagnostic difficulties, evolutive accidents and therapeutical conditions.
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Segal N, Spineanu R, Spineanu L, Benedek A. [A case of anophthalmos]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Ser Oftalmol 1988; 32:137-41. [PMID: 2972011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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18
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Curteanu G, Spineanu R, Burdescu N, Benedek A. [Genital tumors in children]. Rev Pediatr Obstet Ginecol Pediatr 1986; 35:65-71. [PMID: 3088707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Curteanu G, Dragu V, Breban V, Benedek A. [Hepatocellular adenoma]. Rev Pediatr Obstet Ginecol Pediatr 1985; 34:357-61. [PMID: 3006208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Abstract
Vegetative mycelia and spores of the investigated high- and low-producer strains of Streptomyces griseus bound significant amounts (4%) of streptomycin, which could be removed by increasing ionic strength. The release of antibiotic from the spores was easier when the spores were germinating. This phenomenon is considered to play an ecological role. We suppose that the streptomycin released during the germination process may protect the young hyphae from the different bacteria growing in the microenvironment of the Streptomyces spores.
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Curteanu G, Krisár Z, Mikes AM, Dragu I, Andrei I, Benedek A. [2 cases of mediastinal tumors in newborn infants]. Rev Pediatr Obstet Ginecol Pediatr 1982; 31:25-33. [PMID: 6808640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Costa A, Benedek A, Vancsik O, Mikeş AM, Domşa M, Baciu M. [Experience of the Oradea Children's Hospital in the intra-vitam etiological diagnosis of Pneumocystis carinii pneumonia]. Rev Pediatr Obstet Ginecol Pediatr 1980; 29:51-57. [PMID: 6770441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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24
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Curteanu G, Spineanu R, Benedek A. [Clinico-pathological observations on 3 cases of mesenteric cysts]. Rev Pediatr Obstet Ginecol Pediatr 1979; 28:159-65. [PMID: 120585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Boeriu E, Curteanu G, Benedek A, Dragu V. [Xanthogranulomatous pyelonephritis in children]. Rev Pediatr Obstet Ginecol Pediatr 1978; 27:63-8. [PMID: 418480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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26
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Curteanu G, Dragu V, Moţ E, Benedek A. [Menetrier's gastritis]. Rev Pediatr Obstet Ginecol Pediatr 1977; 26:131-6. [PMID: 406659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Curteanu G, Spineanu R, Bembea M, Benedek A. [A case of generalized amyloidosis in a child]. Rev Pediatr Obstet Ginecol Pediatr 1976; 25:211-8. [PMID: 825942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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