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Louail A, de Tena IB, Rojas R, Casals N. XIth Cajal conference: New frontiers in neuron-glial plasticity in health and disease. Eur J Neurosci 2023; 57:1447-1465. [PMID: 36918296 DOI: 10.1111/ejn.15960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 03/16/2023]
Affiliation(s)
- A Louail
- Achucarro Basque Center for Neuroscience, Science Park of the University of the Basque Country (UPV/EHU), Leioa, Spain.,Laboratory of Stem Cells and Regenerative Medicine, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, Barcelona, Spain.,Creatio - Production and Validation Center of Advanced Therapies, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain.,Fundació Recerca Clinic Barcelona-August Pi i Sunyer Biomedical Research Institute (FRCB-IDIBAPS), Barcelona, Spain
| | - I Bengoetxea de Tena
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - R Rojas
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
| | - N Casals
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
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2
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Rojas R, Buenrostro-Figueroa J, Martinez-Avila G. An insight into the main chemical constituents, extraction methods, and
functional properties of essential oils from Moringa plants: a mini-review. Food Res 2022. [DOI: 10.26656/fr.2017.6(5).557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Moringa plants are recognized as multipurpose plant material due to their high content of
bioactive constituents such as phenolic compounds, proteins, and essential oils, among
others. This mini-review provided interesting and innovative information collected from
the Scopus, Science Direct, and Google Scholar databases on the main chemical
constituents of essential oils extracted from different moringa plants. In addition, it
highlighted the different conventional and non-conventional techniques applied in the
extraction of essential oils from different parts of moringa plants, and the functional
properties of these essential oils are reviewed. Thus, this overview offers, for the first
time, a compilation of published information on these topics, which may be useful in food
and pharmaceutical products.
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Cazzaniga C, Odagiu P, Depero E, Molina Bueno L, Andreev YM, Banerjee D, Bernhard J, Burtsev VE, Charitonidis N, Chumakov AG, Cooke D, Crivelli P, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Girod S, Gninenko SN, Hösgen M, Kachanov VA, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Kolosov VN, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Shchukin D, Sieber H, Tikhomirov VO, Tlisova IV, Tlisov DA, Toropin AN, Trifonov AY, Vasilishin BI, Arenas GV, Volkov PV, Volkov VY, Ulloa P. Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel. Eur Phys J C Part Fields 2021; 81:959. [PMID: 34790033 PMCID: PMC8557162 DOI: 10.1140/epjc/s10052-021-09705-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 09/30/2021] [Indexed: 05/28/2023]
Abstract
We report the results of a search for a new vector boson ( A ' ) decaying into two dark matter particles χ 1 χ 2 of different mass. The heavier χ 2 particle subsequently decays to χ 1 and an off-shell Dark Photon A ' ∗ → e + e - . For a sufficiently large mass splitting, this model can explain in terms of new physics the recently confirmed discrepancy observed in the muon anomalous magnetic moment at Fermilab. Remarkably, it also predicts the observed yield of thermal dark matter relic abundance. A detailed Monte-Carlo simulation was used to determine the signal yield and detection efficiency for this channel in the NA64 setup. The results were obtained re-analyzing the previous NA64 searches for an invisible decay A ' → χ χ ¯ and axion-like or pseudo-scalar particles a → γ γ . With this method, we exclude a significant portion of the parameter space justifying the muon g-2 anomaly and being compatible with the observed dark matter relic density for A ' masses from 2 m e up to 390 MeV and mixing parameter ε between 3 × 10 - 5 and 2 × 10 - 2 .
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Affiliation(s)
- C. Cazzaniga
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - P. Odagiu
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Institute of Physics, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - E. Depero
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - L. Molina Bueno
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Instituto de Fisica Corpuscular (CSIC/UV), Carrer del Catedrátic José Beltrán Martinez, 2, 46980 Paterna, Valencia Spain
| | | | - D. Banerjee
- CERN, EN-EA, 1211 Geneva 23, Switzerland
- University of Illinois at Urbana Champaign, Urbana, IL 61801-3080 USA
| | | | - V. E. Burtsev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | | | - A. G. Chumakov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - D. Cooke
- UCL Departement of Physics and Astronomy, University College London, Gower St., London, WC1E 6BT UK
| | - P. Crivelli
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - S. V. Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - R. R. Dusaev
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - T. Enik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A. Feshchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V. N. Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A. Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S. G. Gerassimov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - S. Girod
- CERN, EN-EA, 1211 Geneva 23, Switzerland
| | | | - M. Hösgen
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - V. A. Kachanov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | | | - G. Kekelidze
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B. Ketzer
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | | | | | - V. N. Kolosov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - I. V. Konorov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - S. G. Kovalenko
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
- Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile
| | - V. A. Kramarenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | | | - N. V. Krasnikov
- Institute for Nuclear Research, 117312 Moscow, Russia
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S. V. Kuleshov
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
- Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile
| | - V. E. Lyubovitskij
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile
- Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile
| | - V. Lysan
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V. A. Matveev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Yu. V. Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | | | - V. A. Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - B. Radics
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - R. Rojas
- Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile
| | - A. Rubbia
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - V. D. Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - D. Shchukin
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - H. Sieber
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - I. V. Tlisova
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - D. A. Tlisov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A. N. Toropin
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A. Yu. Trifonov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | | | | | - P. V. Volkov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - V. Yu. Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - P. Ulloa
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
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4
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Aranda F, García R, Guarda FJ, Nilo F, Cruz JP, Callejas C, Balcells ME, González G, Rojas R, Villanueva P. Rathke's cleft cyst infections and pituitary abscesses: case series and review of the literature. Pituitary 2021; 24:374-383. [PMID: 33433887 DOI: 10.1007/s11102-020-01115-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/28/2020] [Indexed: 01/22/2023]
Abstract
PURPOSE Pituitary abscesses (PAs) are a rare clinical entity which may arise from normal pituitary tissue or underlying lesions within the gland. Rathke's cleft cysts (RCCs) are not commonly associated with the development of PA. METHODS Retrospective chart review of three patients with PAs within RCCs at a single university center and review of the literature. RESULTS Three cases are reported. The first case presented with fever and headache and a history of prior surgery due to RCC and a recent respiratory tract infection. The second case had a history of recent skin infections and presented with sudden onset headache and hypopituitarism. In the third case, chronic visual field impairment prompted an ophthalmologic evaluation resulting in a diagnosis of an adenoma and an infected RCC. In all three cases, an endoscopic endonasal approach was performed to drain infected tissue and allowed microbiological identification of gram-positive cocci, followed by treatment with antibiotics for at least three weeks. Cases in the literature are scarce and the diagnosis is usually made intraoperatively due to non-specific manifestations and imaging. PAs arising from underlying pituitary lesions are less common than primary PAs. Differential diagnosis should include pituitary apoplexy, hypophysitis and other cystic lesions. CONCLUSION PAs occurring in RCCs are infrequent. Clinical manifestations are commonly subacute, without septic symptoms. Imaging is usually non-specific. Preoperative diagnosis is infrequent and a broad differential diagnosis should be considered. Empirical antimicrobial therapy should be initiated and adjusted after obtaining cultures to reduce the rate of recurrence and improve clinical outcomes.
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Affiliation(s)
- F Aranda
- Neurosurgery Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - R García
- Endocrinology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - F J Guarda
- Endocrinology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Pituitary Tumor Program, Red de Salud UC-CHRISTUS, Santiago, Chile
- Center for Translational Endocrinology (CETREN), School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - F Nilo
- Endocrinology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Pituitary Tumor Program, Red de Salud UC-CHRISTUS, Santiago, Chile
- Center for Translational Endocrinology (CETREN), School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - J P Cruz
- Pituitary Tumor Program, Red de Salud UC-CHRISTUS, Santiago, Chile
- Radiology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C Callejas
- Pituitary Tumor Program, Red de Salud UC-CHRISTUS, Santiago, Chile
- Otorhinolaryngology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - M E Balcells
- Department of Infectious Diseases, School of Medicine, PontificiaUniversidad Católica de Chile, Santiago, Chile
| | - G González
- Endocrinology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Center for Translational Endocrinology (CETREN), School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - R Rojas
- Neurosurgery Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P Villanueva
- Neurosurgery Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
- Pituitary Tumor Program, Red de Salud UC-CHRISTUS, Santiago, Chile.
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5
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Andreev YM, Banerjee D, Bernhard J, Burtsev VE, Chumakov AG, Cooke D, Crivelli P, Depero E, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Charitonidis N, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Gninenko SN, Hösgen M, Kachanov VA, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Kolosov VN, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Molina Bueno L, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Sieber H, Shchukin D, Tikhomirov VO, Tlisova I, Toropin AN, Trifonov AY, Vasilishin BI, Volkov PV, Volkov VY. Constraints on New Physics in Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector. Phys Rev Lett 2021; 126:211802. [PMID: 34114842 DOI: 10.1103/physrevlett.126.211802] [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] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
We performed a search for a new generic X boson, which could be a scalar (S), pseudoscalar (P), vector (V), or an axial vector (A) particle produced in the 100 GeV electron scattering off nuclei, e^{-}Z→e^{-}ZX, followed by its invisible decay in the NA64 experiment at CERN. No evidence for such a process was found in the full NA64 dataset of 2.84×10^{11} electrons on target. We place new bounds on the S, P, V, A coupling strengths to electrons, and set constraints on their contributions to the electron anomalous magnetic moment a_{e}, |Δa_{X}|≲10^{-15}-10^{-13} for the X mass region 1 MeV≲m_{X}≲1 GeV. These results are an order of magnitude more sensitive compared to the current accuracy on a_{e} from the electron g-2 experiments and recent high-precision determination of the fine structure constant.
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Affiliation(s)
- Yu M Andreev
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - D Banerjee
- CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland
| | - J Bernhard
- CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland
| | - V E Burtsev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A G Chumakov
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - D Cooke
- UCL Departement of Physics and Astronomy, University College London, Gower Street London WC1E 6BT, United Kingdom
| | - P Crivelli
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - E Depero
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A V Dermenev
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - S V Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - R R Dusaev
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - T Enik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - N Charitonidis
- CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland
| | - A Feshchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V N Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S G Gerassimov
- Technische Universität München, Physik Department, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - S N Gninenko
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - M Hösgen
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | - V A Kachanov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - A E Karneyeu
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - G Kekelidze
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | | | - M M Kirsanov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - V N Kolosov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - I V Konorov
- Technische Universität München, Physik Department, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - S G Kovalenko
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
| | - V A Kramarenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - L V Kravchuk
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - N V Krasnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - S V Kuleshov
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
- SAPHIR Millennium Institute of ANID, 7591538 Santiago, Chile
| | - V E Lyubovitskij
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - V Lysan
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V A Matveev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Yu V Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - L Molina Bueno
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | | | - V A Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - B Radics
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - R Rojas
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - A Rubbia
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - V D Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - H Sieber
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - D Shchukin
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - V O Tikhomirov
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - I Tlisova
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A N Toropin
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A Yu Trifonov
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | | | - P V Volkov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - V Yu Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
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6
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Depero E, Andreev YM, Banerjee D, Bernhard J, Burtsev VE, Charitonidis N, Chumakov AG, Cooke D, Crivelli P, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Girod S, Gninenko SN, Hösgen M, Kachanov VA, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Kolosov VN, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Bueno LM, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Shchukin D, Sieber H, Tikhomirov VO, Tlisova VI, Tlisov DA, Toropin AN, Trifonov AY, Vasilishin BI, Arenas GV, Volkov PV, Volkov VY, Ulloa P. Hunting down the X17 boson at the CERN SPS. Eur Phys J C Part Fields 2020; 80:1159. [PMID: 33343226 PMCID: PMC7738366 DOI: 10.1140/epjc/s10052-020-08725-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/01/2020] [Indexed: 06/01/2023]
Abstract
Recently, the ATOMKI experiment has reported new evidence for the excess of e + e - events with a mass ∼ 17 MeV in the nuclear transitions of 4 He, that they previously observed in measurements with 8 Be. These observations could be explained by the existence of a new vector X 17 boson. So far, the search for the decay X 17 → e + e - with the NA64 experiment at the CERN SPS gave negative results. Here, we present a new technique that could be implemented in NA64 aiming to improve the sensitivity and to cover the remaining X 17 parameter space. If a signal-like event is detected, an unambiguous observation is achieved by reconstructing the invariant mass of the X 17 decay with the proposed method. To reach this goal an optimization of the X 17 production target, as well as an efficient and accurate reconstruction of two close decay tracks, is required. A dedicated analysis of the available experimental data making use of the trackers information is presented. This method provides independent confirmation of the NA64 published results [1], validating the tracking procedure. The detailed Monte Carlo study of the proposed setup and the background estimate show that the goal of the proposed search is feasible.
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Affiliation(s)
| | - E. Depero
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - D. Banerjee
- CERN, EN-EA, 1211 Geneva 23, Switzerland
- University of Illinois at Urbana Champaign, Urbana, IL 61801-3080 USA
| | | | - V. E. Burtsev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | | | - A. G. Chumakov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - D. Cooke
- UCL Department of Physics and Astronomy, University College London, Gower St., London, WC1E 6BT UK
| | - P. Crivelli
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - S. V. Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - R. R. Dusaev
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - T. Enik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A. Feshchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V. N. Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A. Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S. G. Gerassimov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - S. Girod
- CERN, EN-EA, 1211 Geneva 23, Switzerland
| | | | - M. Hösgen
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | - V. A. Kachanov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | | | - G. Kekelidze
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B. Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | | | | | - V. N. Kolosov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - I. V. Konorov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - S. G. Kovalenko
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
| | - V. A. Kramarenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | | | - N. V. Krasnikov
- Institute for Nuclear Research, 117312 Moscow, Russia
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S. V. Kuleshov
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
| | - V. E. Lyubovitskij
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile
| | - V. Lysan
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V. A. Matveev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Yu. V. Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - L. Molina Bueno
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - V. A. Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - B. Radics
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - R. Rojas
- Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile
| | - A. Rubbia
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - V. D. Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - D. Shchukin
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - H. Sieber
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - vI. Tlisova
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - D. A. Tlisov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A. N. Toropin
- Institute for Nuclear Research, 117312 Moscow, Russia
| | | | | | | | - P. V. Volkov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - V. Yu. Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - P. Ulloa
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
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7
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Banerjee D, Bernhard J, Burtsev VE, Chumakov AG, Cooke D, Crivelli P, Depero E, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Charitonidis N, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Gninenko SN, Hösgen M, Jeckel M, Kachanov VA, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Kolosov VN, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Molina Bueno L, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Sieber H, Shchukin D, Tikhomirov VO, Tlisova I, Tlisov DA, Toropin AN, Trifonov AY, Vasilishin BI, Vasquez Arenas G, Volkov PV, Volkov VY, Ulloa P. Search for Axionlike and Scalar Particles with the NA64 Experiment. Phys Rev Lett 2020; 125:081801. [PMID: 32909809 DOI: 10.1103/physrevlett.125.081801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
We carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the Primakoff effect in interactions of hard bremsstrahlung photons generated by 100 GeV electrons in the NA64 active dump with virtual photons provided by the nuclei of the dump. The a(s) would penetrate the downstream HCAL module, serving as a shield, and would be observed either through their a(s)→γγ decay in the rest of the HCAL detector, or as events with a large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing of the a(s) parameter space, including those from generic axion models, inaccessible to previous experiments. No evidence of such processes has been found from the analysis of the data corresponding to 2.84×10^{11} electrons on target, allowing us to set new limits on the a(s)γγ-coupling strength for a(s) masses below 55 MeV.
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Affiliation(s)
- D Banerjee
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
- University of Illinois at Urbana Champaign, Urbana, Illinois 61801-3080, USA
| | - J Bernhard
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - V E Burtsev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A G Chumakov
- Tomsk State Pedagogical University, Tomsk 634061, Russia
| | - D Cooke
- UCL Departement of Physics and Astronomy, University College London, Gower St., London WC1E 6BT, United Kingdom
| | - P Crivelli
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - E Depero
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A V Dermenev
- Institute for Nuclear Research, Moscow 117312, Russia
| | - S V Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), Protvino 142281, Russia
| | - R R Dusaev
- Tomsk Polytechnic University, Tomsk 634050, Russia
| | - T Enik
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - N Charitonidis
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - A Feshchenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - V N Frolov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S G Gerassimov
- Technische Universität München, Physik Department, Garching 85748, Germany
- P.N. Lebedev Physical Institute, Moscow 119991, Russia
| | - S N Gninenko
- Institute for Nuclear Research, Moscow 117312, Russia
| | - M Hösgen
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, Bonn 53115, Germany
| | - M Jeckel
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - V A Kachanov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), Protvino 142281, Russia
| | - A E Karneyeu
- Institute for Nuclear Research, Moscow 117312, Russia
| | - G Kekelidze
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - B Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, Bonn 53115, Germany
| | | | - M M Kirsanov
- Institute for Nuclear Research, Moscow 117312, Russia
| | - V N Kolosov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), Protvino 142281, Russia
| | - I V Konorov
- Technische Universität München, Physik Department, Garching 85748, Germany
- P.N. Lebedev Physical Institute, Moscow 119991, Russia
| | - S G Kovalenko
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
| | - V A Kramarenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | - L V Kravchuk
- Institute for Nuclear Research, Moscow 117312, Russia
| | - N V Krasnikov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- Institute for Nuclear Research, Moscow 117312, Russia
| | - S V Kuleshov
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
| | - V E Lyubovitskij
- Tomsk State Pedagogical University, Tomsk 634061, Russia
- Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
| | - V Lysan
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - V A Matveev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - Yu V Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), Protvino 142281, Russia
| | - L Molina Bueno
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | | | - V A Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), Protvino 142281, Russia
| | - B Radics
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - R Rojas
- Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
| | - A Rubbia
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - V D Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), Protvino 142281, Russia
| | - H Sieber
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - D Shchukin
- P.N. Lebedev Physical Institute, Moscow 119991, Russia
| | | | - I Tlisova
- Institute for Nuclear Research, Moscow 117312, Russia
| | - D A Tlisov
- Institute for Nuclear Research, Moscow 117312, Russia
| | - A N Toropin
- Institute for Nuclear Research, Moscow 117312, Russia
| | - A Yu Trifonov
- Tomsk State Pedagogical University, Tomsk 634061, Russia
| | | | - G Vasquez Arenas
- Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
| | - P V Volkov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | - V Yu Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | - P Ulloa
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
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González-Pacheco BE, Delaye L, Ochoa D, Rojas R, Silva-Rosales L. Changes in the G N/G Cof the M segment show positive selection and recombination of one aggressive isolate and two mild isolates of tomato spotted wilt virus. Virus Genes 2020; 56:217-227. [PMID: 31894468 DOI: 10.1007/s11262-019-01723-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/24/2019] [Accepted: 12/12/2019] [Indexed: 11/25/2022]
Abstract
We isolated and compared three tomato spotted wilt virus (TSWV) isolates from lettuce (TSWV-Let), pepper (TSWV-Pep), and tomato (TSWV-Tom) from central Mexico to determine their ability to infect a set of eighteen differential plant species from seven families. TWSV-Let was an aggressive isolate with the ability to infect up to 52% of the differential plants, including maize, under greenhouse conditions. The nucleotide (nt) sequences of the three isolates are more than 90% similar in the M and S RNA segments. In the M segment of the TSWV-Let isolate, we detected nt changes in their intergenic region (IGR) and, in the Gc gene, a region containing a recombination site, as well as a synapomorphy associated with one of three sites under positive selection with a change in one aa residue (a cysteine-to-valine mutation). We speculate on the association of these features in the Gc gene with host selection, adaptation, aggressiveness, and ability to infect maize plants.
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Affiliation(s)
- B E González-Pacheco
- Depto de Ing. Genética, Cinvestav Unidad Irapuato, Km. 9.6 Lib. Nte. Carr. Irapuato-León, 36821, Irapuato, Gto., Mexico
| | - L Delaye
- Depto de Ing. Genética, Cinvestav Unidad Irapuato, Km. 9.6 Lib. Nte. Carr. Irapuato-León, 36821, Irapuato, Gto., Mexico
| | - D Ochoa
- Instituto de Fitosanidad, Colegio de Postgraduados, Carretera México-Texcoco, Km 36.5. Montecillos, Mpio. Texcoco, 56230, Edo. Mex., D.F., Mexico
| | - R Rojas
- Instituto de Fitosanidad, Colegio de Postgraduados, Carretera México-Texcoco, Km 36.5. Montecillos, Mpio. Texcoco, 56230, Edo. Mex., D.F., Mexico
| | - L Silva-Rosales
- Depto de Ing. Genética, Cinvestav Unidad Irapuato, Km. 9.6 Lib. Nte. Carr. Irapuato-León, 36821, Irapuato, Gto., Mexico.
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Rojas R. Artificial intelligence vs human intelligence: will radiologists be needed in the future? Radiología (English Edition) 2020. [DOI: 10.1016/j.rxeng.2019.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chang YM, Kuhn AL, Porbandarwala N, Rojas R, Ivanovic V, Bhadelia RA. Unilateral Nonvisualization of a Transverse Dural Sinus on Phase-Contrast MRV: Frequency and Differentiation from Sinus Thrombosis on Noncontrast MRI. AJNR Am J Neuroradiol 2020; 41:115-121. [PMID: 31924604 DOI: 10.3174/ajnr.a6337] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/11/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND PURPOSE Unilateral decreased/nonvisualization of a transverse dural sinus on MRV poses a diagnostic dilemma when gadolinium administration is contraindicated. We determined the frequency of unilateral decreased/nonvisualization of the transverse dural sinus and the performance of pregadolinium MR imaging sequences in diagnosing transverse sinus thrombosis in the presence of unilateral decreased/nonvisualization on phase-contrast MRV. MATERIALS AND METHODS We conducted a retrospective review of consecutive 3D phase-contrast MRV (VENC, 30 cm/s) and routine brain imaging (noncontrast sagittal T1, axial T2, FLAIR, DWI, GRE, and postgadolinium 3D-MPRAGE images) performed during a 3-year period for a total of 208 patients. Nonvisualization of a transverse dural sinus was defined as ≥50% nonvisualization of the transverse sinus caliber versus the contralateral side on MRV. Noncontrast imaging findings were considered abnormal when hyperintense signal was present on T2, FLAIR, T1, and DWI, and there were T2* blooming artifacts on GRE and DWI. Postgadolinium 3D-MPRAGE was used to confirm the diagnosis of transverse sinus thrombosis. RESULTS Nonvisualization of a transverse dural sinus was observed in 72/208 (34.6%) patients on MRV; 56/72 (77.8%) were without transverse sinus thrombosis, and 16/72 (22.2%) patients had transverse dural sinus thrombosis. Nonvisualization of a transverse dural sinus was seen in 56/192 (29.2%) patients without transverse sinus thrombosis and 16/16 (100%) with transverse sinus thrombosis. Abnormal findings on DWI (transverse sinus hyperintense signal or T2* blooming artifact) are 93.8% sensitive and 100.0% specific for transverse sinus thrombosis. Other noncontrast MR imaging sequences ranged from 56.3%-68.8% sensitive and 91.1%-100.0% specific. CONCLUSIONS Nonvisualization of a transverse dural sinus is a frequent phenomenon on phase-contrast MRV. DWI can be effectively used to exclude sinus thrombosis when nonvisualization of a transverse dural sinus is a diagnostic conundrum on phase-contrast MRV and contrast-enhanced studies are contraindicated.
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Affiliation(s)
- Y-M Chang
- From the Division of Neuroradiology, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
| | - A L Kuhn
- From the Division of Neuroradiology, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - N Porbandarwala
- From the Division of Neuroradiology, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - R Rojas
- From the Division of Neuroradiology, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - V Ivanovic
- From the Division of Neuroradiology, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - R A Bhadelia
- From the Division of Neuroradiology, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
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11
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Chacon-Lozsan FJ, Rojas R, Rodriguez M. P4558Hemodynamic management of resistant hypertension. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0949] [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: 11/13/2022] Open
Abstract
Abstract
Background
Hypertension is the most prevalent chronic disease worldwide and is is related with high probability of cardiac disease, kidney disease and cerebrovascular events. Blood pressure measurement was used in the last decades to diagnose and guide antihypertensive therapy; however blood pressure is the result of interaction of more complex hemodynamic parameters previously reserved to experimental studies or critical care patients management using invasive methods. Since 1996 few studies has proposed the use of hemodynamic parameters to classify and guide hypertension therapy with good results.
Purpose
The present study purpose was to measure hemodynamic parameters in patients with non-controlled resistant hypertension and use it to guide pharmacologic treatment in order to archive control blood pressure values according to the European Society of Cardiology guidelines.
Methods
A total of 84 patients between 32 and 95 years old diagnosed with non-controlled primary resistant hypertension were recruited and after previous therapy washout hemodynamic parameters were measured using noninvasive methods: preload by central venous pressure (CVP) using inferior vena cava diameter, cardiac index and systemic vascular resistance using Lyljestrand & Zander modified formula. Patients were classified in 3 basic groups depending on which parameter was above normal value: hyperdynamic (HD) for high cardiac index >3.5 L/min/m2, fluid overload (FO) for CVP >8cmH2O and high systemic vascular resistance index (HSVRi) >2500 dynes/sec/m2/cm–5, also 3 combined groups were a patient had 2 simultaneous hemodynamic alterations (HD+FO, HD+HSVRi and FO+HSRVi), according to this classification pharmacotherapy was guided indicating Bisoprolol in HD group, Amlodipine to HSVR patients and Hydrochlorothiazide to FO patients, in combined groups, combined therapy was given. Patients were observed for 6 months period taking as primary endpoint blood pressure control, acute cardiovascular events and hypotension.
Results
A significant reduction of hemodynamic parameters and blood pressure was observed since the first month of treatment obtaining a 100% hemodynamic and blood pressure goals in all patients at the third month of therapy without hypotension or acute cardiovascular event during this period, the HD+FO group reach goals at the 6th month of treatment without reported complications.
Conclusions
In this preliminary studied we observed that hemodynamic guided high blood pressure control may be a useful tool to a better understanding, classifications and treatment in patients with resistant hypertension; however a larger outcome studies to confirm this hypothesis.
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Affiliation(s)
- F J Chacon-Lozsan
- Central University of Venezuela (UCV), Caracas, Venezuela (Bolivarian Republic of)
| | - R Rojas
- Central University of Venezuela (UCV), Caracas, Venezuela (Bolivarian Republic of)
| | - M Rodriguez
- Central University of Venezuela (UCV), Caracas, Venezuela (Bolivarian Republic of)
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Balmaceda C, Espinoza M, Rojas R. PND9 BUDGET IMPACT ANALYSIS OF CLADRIBINE COMPARED TO THE CURRENT COVERAGE SCHEME IN CHILE TO TREAT PATIENTS WITH HIGHLY ACTIVE RELAPSING REMITTING MULTIPLE SCLEROSIS. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.339] [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: 11/16/2022]
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Hincapie A, Machnicki G, Julian G, Gilardino R, Soares C, Costa L, Tang B, Rojas R. PNS57 REAL WORLD EVIDENCE LANDSCAPE IN LATIN AMERICA HEALTH CARE DECISION MAKING: EXPLORING UNDERSTANDING, ACCEPTABILITY AND USE. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Rojas R, Walbaum M. CR4 ESTIMATION OF THE ECONOMIC AND HEALTH EFFECTS OF CHRONIC KIDNEY DISEASE IN CHILEAN POPULATION OLDER THAN 60 YEARS OLD. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Banerjee D, Burtsev VE, Chumakov AG, Cooke D, Crivelli P, Depero E, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Charitonidis N, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Gninenko SN, Hösgen M, Jeckel M, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Molina Bueno L, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Shchukin D, Tikhomirov VO, Tlisova I, Tlisov DA, Toropin AN, Trifonov AY, Vasilishin BI, Vasquez Arenas G, Volkov PV, Volkov VY, Ulloa P. Dark Matter Search in Missing Energy Events with NA64. Phys Rev Lett 2019; 123:121801. [PMID: 31633975 DOI: 10.1103/physrevlett.123.121801] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Indexed: 06/10/2023]
Abstract
A search for sub-GeV dark matter production mediated by a new vector boson A^{'}, called a dark photon, is performed by the NA64 experiment in missing energy events from 100 GeV electron interactions in an active beam dump at the CERN SPS. From the analysis of the data collected in the years 2016, 2017, and 2018 with 2.84×10^{11} electrons on target no evidence of such a process has been found. The most stringent constraints on the A^{'} mixing strength with photons and the parameter space for the scalar and fermionic dark matter in the mass range ≲0.2 GeV are derived, thus demonstrating the power of the active beam dump approach for the dark matter search.
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Affiliation(s)
- D Banerjee
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
- University of Illinois at Urbana Champaign, Urbana, 61801-3080 Illinois, USA
| | - V E Burtsev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A G Chumakov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - D Cooke
- Department of Physics and Astronomy, University College London, Gower St., London WC1E 6BT, United Kingdom
| | - P Crivelli
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - E Depero
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A V Dermenev
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - S V Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia
| | - R R Dusaev
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - T Enik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - N Charitonidis
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - A Feshchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V N Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S G Gerassimov
- Technische Universität München, Physik Department, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - S N Gninenko
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - M Hösgen
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | - M Jeckel
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - A E Karneyeu
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - G Kekelidze
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | | | - M M Kirsanov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - I V Konorov
- Technische Universität München, Physik Department, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - S G Kovalenko
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - V A Kramarenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - L V Kravchuk
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - N V Krasnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - S V Kuleshov
- Departamento de Ciencias Fıisicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
| | - V E Lyubovitskij
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - V Lysan
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V A Matveev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - Yu V Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia
| | - L Molina Bueno
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | | | - V A Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia
| | - B Radics
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - R Rojas
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - A Rubbia
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - V D Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia
| | - D Shchukin
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - V O Tikhomirov
- P.N. Lebedev Physical Institute, Moscow, Russia, 119 991 Moscow, Russia
| | - I Tlisova
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - D A Tlisov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A N Toropin
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A Yu Trifonov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - B I Vasilishin
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - G Vasquez Arenas
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - P V Volkov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - V Yu Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - P Ulloa
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
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Martínez I, Morales-Verdejo C, Karam A, González T, Coll DS, Rojas R, Rodríguez BE. Ethylene polymerization by binuclear chromium complex with tetrakis(pyrazolyl-methyl)benzene ligand. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02857-1] [Citation(s) in RCA: 2] [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: 10/26/2022]
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Wilbur M, Borah B, Moriarty J, Rojas R, Dowdy S, Stone R, Sinno A, Wethington S, Fader A. Predictors of 30-, 60-, and 90-day hospital readmissions after ovarian cancer cytoreductive surgery: A nationwide readmissions database study. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Vargas C, Balmaceda C, Rodríguez F, Rojas R, Giglio A, Espinoza MA. Economic evaluation of sunitinib versus pazopanib and best supportive care for the treatment of metastatic renal cell carcinoma in Chile: cost-effectiveness analysis and a mixed treatment comparison. Expert Rev Pharmacoecon Outcomes Res 2019; 19:609-617. [PMID: 30758237 DOI: 10.1080/14737167.2019.1580572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Background: Sunitinib and Pazopanib are two metastatic renal cell carcinoma (MRCC) treatment alternatives, however the health system in Chile does not consider coverage for any. The cost-effectiveness versus relevant comparator was assessed to support evidence-based decision making. Methods: A four health states Markov model was built: first, second line treatments, BSC and death. Benefits were measured in QALYs, and efficacy estimates were obtained from an indirect treatment comparison. A 10-year time horizon and a 3% undifferentiated discount rate were considered. Deterministic and probabilistic sensitivity analyses were performed. Results: The costs of treating MRCC with Sunitinib were higher than Pazopanib and BSC. When comparing Sunitinib versus Pazopanib, the incremental benefit is small favoring Sunitinib (0.03 QALYs). The base case scenario shows an average ICER of PA versus BSC of US$62,327.11/QALY and of US$85,885/QALY for Sunitinib versus Pazopanib. The ICER was most sensitive to the OS relative to BSC, where evidence was associated to important bias. Conclusions: Sunitinib or Pazopanib can be considered cost-effective if a 3 GDP per-capita threshold is assumed. The decision between SU or PA is highly sensitive to the price of the drugs, rather than the outcomes. Therefore, the decision might be made based on cost-minimization exercise.
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Affiliation(s)
- C Vargas
- Unidad de Evaluación de Tecnologías en Salud, Centro de Investigación Clínica, Faculty of Medicine, Pontificia Universidad Católica de Chile , Santiago , Chile.,Centre of Health Economics Research and Evaluation (CHERE), University of Technology Sydney , Sydney , Australia
| | - C Balmaceda
- Unidad de Evaluación de Tecnologías en Salud, Centro de Investigación Clínica, Faculty of Medicine, Pontificia Universidad Católica de Chile , Santiago , Chile
| | - F Rodríguez
- Faculty of Medicine, Universidad San Sebastián , Santiago , Chile
| | - R Rojas
- Unidad de Evaluación de Tecnologías en Salud, Centro de Investigación Clínica, Faculty of Medicine, Pontificia Universidad Católica de Chile , Santiago , Chile
| | - A Giglio
- Programa de Medicina Interna, Complejo Asistencial Sótero del Río , Santiago , Chile
| | - M A Espinoza
- Unidad de Evaluación de Tecnologías en Salud, Centro de Investigación Clínica, Faculty of Medicine, Pontificia Universidad Católica de Chile , Santiago , Chile.,Departamento de Salud Pública, Pontificia Universidad Católica de Chile , Santiago , Chile
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Saucedo-Pompa S, Torres-Castillo J, Castro-López C, Rojas R, Sánchez-Alejo E, Ngangyo-Heya M, Martínez-Ávila G. Moringa plants: Bioactive compounds and promising applications in food products. Food Res Int 2018; 111:438-450. [DOI: 10.1016/j.foodres.2018.05.062] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 05/01/2018] [Accepted: 05/24/2018] [Indexed: 02/06/2023]
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Banerjee D, Burtsev VE, Chumakov AG, Cooke D, Crivelli P, Depero E, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Charitonidis N, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Gninenko SN, Hösgen M, Jeckel M, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Tikhomirov VO, Tlisov DA, Toropin AN, Trifonov AY, Vasilishin BI, Vasquez Arenas G, Volkov PV, Volkov V, Ulloa P. Search for a Hypothetical 16.7 MeV Gauge Boson and Dark Photons in the NA64 Experiment at CERN. Phys Rev Lett 2018; 120:231802. [PMID: 29932721 DOI: 10.1103/physrevlett.120.231802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Indexed: 06/08/2023]
Abstract
We report the first results on a direct search for a new 16.7 MeV boson (X) which could explain the anomalous excess of e^{+}e^{-} pairs observed in the excited ^{8}Be^{*} nucleus decays. Because of its coupling to electrons, the X could be produced in the bremsstrahlung reaction e^{-}Z→e^{-}ZX by a 100 GeV e^{-} beam incident on an active target in the NA64 experiment at the CERN Super Proton Synchrotron and observed through the subsequent decay into a e^{+}e^{-} pair. With 5.4×10^{10} electrons on target, no evidence for such decays was found, allowing us to set first limits on the X-e^{-} coupling in the range 1.3×10^{-4}≲ε_{e}≲4.2×10^{-4} excluding part of the allowed parameter space. We also set new bounds on the mixing strength of photons with dark photons (A^{'}) from nonobservation of the decay A^{'}→e^{+}e^{-} of the bremsstrahlung A^{'} with a mass ≲23 MeV.
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Affiliation(s)
- D Banerjee
- University of Illinois at Urbana Champaign, Urbana, 61801-3080 Illinois, USA
| | - V E Burtsev
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - A G Chumakov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - D Cooke
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - P Crivelli
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - E Depero
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A V Dermenev
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - S V Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - R R Dusaev
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - T Enik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - N Charitonidis
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - A Feshchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V N Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S G Gerassimov
- P.N. Lebedev Physics Institute, 119 991 Moscow, Russia
- Technische Universität München, Physik Department, 85748 Garching, Germany
| | - S N Gninenko
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - M Hösgen
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | - M Jeckel
- CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland
| | - A E Karneyeu
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - G Kekelidze
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany
| | | | - M M Kirsanov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - I V Konorov
- P.N. Lebedev Physics Institute, 119 991 Moscow, Russia
- Technische Universität München, Physik Department, 85748 Garching, Germany
| | - S G Kovalenko
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - V A Kramarenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - L V Kravchuk
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - N V Krasnikov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - S V Kuleshov
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - V E Lyubovitskij
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - V Lysan
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V A Matveev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Yu V Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | | | - V A Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | - B Radics
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - R Rojas
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - A Rubbia
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - V D Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center "Kurchatov Institute" (IHEP), 142281 Protvino, Russia
| | | | - D A Tlisov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A N Toropin
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A Yu Trifonov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - B I Vasilishin
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
| | - G Vasquez Arenas
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
| | - P V Volkov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - V Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - P Ulloa
- Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile
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Chang YM, Kim G, Peri N, Papavassiliou E, Rojas R, Bhadelia RA. Diagnostic Utility of Increased STIR Signal in the Posterior Atlanto-Occipital and Atlantoaxial Membrane Complex on MRI in Acute C1-C2 Fracture. AJNR Am J Neuroradiol 2017; 38:1820-1825. [PMID: 28684454 DOI: 10.3174/ajnr.a5284] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 05/04/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Acute C1-C2 fractures are difficult to detect on MR imaging due to a paucity of associated bone marrow edema. The purpose of this study was to determine the diagnostic utility of increased STIR signal in the posterior atlanto-occipital and atlantoaxial membrane complex (PAOAAM) in the detection of acute C1-C2 fractures on MR imaging. MATERIALS AND METHODS Eighty-seven patients with C1-C2 fractures, 87 with no fractures, and 87 with other cervical fractures with acute injury who had both CT and MR imaging within 24 hours were included. All MR images were reviewed by 2 neuroradiologists for the presence of increased STIR signal in the PAOAAM and interspinous ligaments at other cervical levels. Sensitivity and specificity of increased signal within the PAOAAM for the presence of a C1-C2 fracture were assessed. RESULTS Increased PAOAAM STIR signal was seen in 81/87 patients with C1-C2 fractures, 6/87 patients with no fractures, and 51/87 patients with other cervical fractures with 93.1% sensitivity versus those with no fractures, other cervical fractures, and all controls. Specificity was 93.1% versus those with no fractures, 41.4% versus those with other cervical fractures, and 67.2% versus all controls for the detection of acute C1-C2 fractures. Isolated increased PAOAAM STIR signal without increased signal in other cervical interspinous ligaments showed 89.7% sensitivity versus all controls. Specificity was 95.3% versus those with no fractures, 83.7% versus those with other cervical fractures, and 91.4% versus all controls. CONCLUSIONS Increased PAOAAM signal on STIR is a highly sensitive indicator of an acute C1-C2 fracture on MR imaging. Furthermore, increased PAOAAM STIR signal as an isolated finding is highly specific for the presence of a C1-C2 fracture, making it a useful sign on MR imaging when CT is either unavailable or the findings are equivocal.
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Affiliation(s)
- Y-M Chang
- From the Departments of Radiology (Y.-M.C., G.K., N.P., R.R., R.A.B.)
| | - G Kim
- From the Departments of Radiology (Y.-M.C., G.K., N.P., R.R., R.A.B.)
| | - N Peri
- From the Departments of Radiology (Y.-M.C., G.K., N.P., R.R., R.A.B.)
| | - E Papavassiliou
- Neurosurgery (E.P.), Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - R Rojas
- From the Departments of Radiology (Y.-M.C., G.K., N.P., R.R., R.A.B.)
| | - R A Bhadelia
- From the Departments of Radiology (Y.-M.C., G.K., N.P., R.R., R.A.B.)
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García-Noblejas A, Cannata-Ortiz J, Conde E, González Barca E, Gutiérrez N, Rojas R, Vidal MJ, Ramírez MJ, Jiménez-Ubieto A, García-Ruiz JC, Sancho JM, López A, Ríos Rull P, Novelli S, Albo C, Debén G, López-Guillermo A, Nicolás C, González de Villambrosia S, Mercadal S, Martín García-Sancho A, Arranz R. Autologous stem cell transplantation (ASCT) in patients with mantle cell lymphoma: a retrospective study of the Spanish lymphoma group (GELTAMO). Ann Hematol 2017; 96:1323-1330. [PMID: 28536895 DOI: 10.1007/s00277-017-2998-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/10/2017] [Indexed: 01/21/2023]
Abstract
Guidelines recommend autologous stem cell transplantation (ASCT) consolidation in first complete or partial response after regimens including rituximab (R) and high-dose AraC (HDAC), but its use beyond that response is questioned. We present a retrospective analysis of 268 patients with MCL who received ASCT. With a median follow-up for survival patients of 54 months, progression-free survival and overall survival for the whole series were 38 and 74 months, respectively, and for patients transplanted in first CR 49 and 97 months, respectively. Patients without CR before transplant were analyzed separately, those who achieved CR after transplantation had better PFS (48 vs 0.03 months, p < 0.001) and OS (92 vs 16 months, p < 0.001) than the remaining. In univariate analysis, first CR at transplant (p = 0.01) and prior rituximab (p = 0.02) were the variables associated with PFS. For OS, the same variables resulted significant (p = 0.03 and p < 0.001, respectively). In multivariate analysis, only the status at transplant (first CR) remained significant. This retrospective study concludes that ASCT consolidation in first CR induces high survival rates. In other stages of disease, the need of ASCT as consolidation may be questioned.
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Affiliation(s)
- A García-Noblejas
- Hospital Universitario La Princesa, Diego de Leon, 62, 28006, Madrid, Spain
| | - J Cannata-Ortiz
- Hospital Universitario La Princesa, Diego de Leon, 62, 28006, Madrid, Spain
| | - E Conde
- HU Marqués de Valdecilla, Santander, Spain
| | | | | | - R Rojas
- HU Reina Sofía, Córdoba, Spain
| | | | | | | | | | - J M Sancho
- H. Germans Trias i Pujol, Barcelona, Spain
| | - A López
- HU Vall d'Hebron, Barcelona, Spain
| | - P Ríos Rull
- HU Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | | | - C Albo
- H Xeral-Cíes, Madrid, Spain
| | | | | | - C Nicolás
- HU Central de Asturias, Oviedo, Spain
| | | | - S Mercadal
- Instituto Catalán de Oncología, Barcelona, Spain
| | | | - R Arranz
- Hospital Universitario La Princesa, Diego de Leon, 62, 28006, Madrid, Spain.
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Rojas R. Orthognathic surgery in the obstructive sleep apnoea patient. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.170] [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: 11/17/2022]
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González-Castro A, Azcune O, Peñasco Y, Rodríguez JC, Domínguez MJ, Rojas R. [Opinion of professionals in an intensive care unit on the limitations of therapeutic effort]. ACTA ACUST UNITED AC 2016; 31:262-6. [PMID: 26922161 DOI: 10.1016/j.cali.2015.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 12/10/2015] [Accepted: 12/15/2015] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To determine the opinion held by professionals in an intensive care unit on the limitation of therapeutic effort process at the end-of-life (LTE). To collect this information, and then use it to improve the basic aspects that the LTE have on the quality of care by intensive care unit staff. MATERIAL AND METHODS A prospective descriptive study was carried out in the Intensive Care Unit of a third level public university hospital. A questionnaire was prepared that included questions on their demographic profile and others to provide an ethical valuation profile, as well as to find out the knowledge and information that the professional had on the LTE. Descriptive study of the sample and comparative statistics were performed using the chi-squared statistical test. RESULTS A total of 65 valid questionnaires were obtained from a convenience sample of 70 professionals. Almost all of them (98%) were in favour of the limitation of therapeutic effort. The LTE was considered as some kind of euthanasia (active or passive) in up to 28% of the replies, valuations by professional categories is shown in. More than three-quarters (77%) had the belief that not to start treatment was not the same as withdrawing an already established treatment. Just over half (52%) of the respondents believe the value that should have more weight when considering LET would be the prognosis of the current illness of the patient, and 46% the future quality of life of the patient. The economic cost of treatment to be applied was not considered in any case. CONCLUSIONS The LTE is approved by the majority of professionals in our Intensive Care Unit. Although a non-negligible percentage understood it as a form of euthanasia.
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Affiliation(s)
| | - O Azcune
- Hospital Universitario Marqués de Valdecilla, Santander, España
| | - Y Peñasco
- Hospital Universitario Marqués de Valdecilla, Santander, España
| | - J C Rodríguez
- Hospital Universitario Marqués de Valdecilla, Santander, España
| | - M J Domínguez
- Hospital Universitario Marqués de Valdecilla, Santander, España
| | - R Rojas
- Hospital Universitario Marqués de Valdecilla, Santander, España
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Mezzano G, Rojas R, Morales C, Gazitúa R, Díaz JC, Brahm J. Primary hepatic lymphoma: An infrequent focal liver tumour. Gastroenterol Hepatol 2015; 39:674-676. [PMID: 26547611 DOI: 10.1016/j.gastrohep.2015.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 08/11/2015] [Accepted: 09/02/2015] [Indexed: 11/18/2022]
Affiliation(s)
- Gabriel Mezzano
- Sección de Gastroenterología, Hospital Clínico, Universidad de Chile, Santiago, Región Metropolitana, Chile.
| | - Rene Rojas
- Sección de Gastroenterología, Hospital Clínico, Universidad de Chile, Santiago, Región Metropolitana, Chile
| | - Claudia Morales
- Departamento de Anatomía Patológica, Hospital Clínico, Universidad de Chile, Santiago, Región Metropolitana, Chile
| | - Raimundo Gazitúa
- Sección de Hematología, Hospital Clínico, Universidad de Chile, Santiago, Región Metropolitana, Chile
| | - Juan Carlos Díaz
- Departamento de Cirugía, Hospital Clínico, Universidad de Chile, Santiago, Región Metropolitana, Chile
| | - Javier Brahm
- Sección de Gastroenterología, Hospital Clínico, Universidad de Chile, Santiago, Región Metropolitana, Chile
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Flores N, Flores N, Orzuza G, Suarez J, Martinez Fascio J, Ivetich G, Villa C, Vigo G, Burgos M, Davalos G, Gaspar E, Alonso D, Rojas R, Furlan C. Neurosjögren and antiphospholipid syndrome: a case report. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Takaki T, Rojas R, Ohno M, Shimokawabe T, Aoki T. GPU phase-field lattice Boltzmann simulations of growth and motion of a binary alloy dendrite. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1757-899x/84/1/012066] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sengupta S, Rojas R, Mahadevan A, Kasper E, Jeyapalan S. CPT-11/bevacizumab for the treatment of refractory brain metastases in patients with HER2-neu-positive breast cancer. Oxf Med Case Reports 2015; 2015:254-7. [PMID: 26634139 PMCID: PMC4664841 DOI: 10.1093/omcr/omv010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 01/27/2015] [Accepted: 02/03/2015] [Indexed: 11/14/2022] Open
Abstract
Nervous system relapse of patients with advanced HER2-neu-positive breast cancer is an increasing problem, with one-third of women developing brain metastases. Standard therapies using steroids, surgery and radiotherapy do not provide a lasting response. We evaluated CPT-11 and bevacizumab, which can both cross the blood-brain barrier, as combination therapy to treat HER2-neu-positive breast cancer with brain metastases.
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Affiliation(s)
- S Sengupta
- Department of Neurology , Harvard Medical School, Beth Israel Deaconess Medical Center , Boston, MA , USA
| | - R Rojas
- Department of Neuroradiology , Harvard Medical School, Beth Israel Deaconess Medical Center , Boston, MA , USA
| | - A Mahadevan
- Department of Radiation Oncology , Harvard Medical School, Beth Israel Deaconess Medical Center , Boston, MA , USA
| | - E Kasper
- Department of Neurosurgery , Harvard Medical School, Beth Israel Deaconess Medical Center , Boston, MA , USA
| | - S Jeyapalan
- Department of Neurology, Tuft Medical School, Tufts Medical Center, Boston, MA
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Puccio F, Rojas R, Mosquera I, Cifarrelli D, Hernández A, Lizarralde M, Peña G, Jaua L, Mendoza C, Reyes R. Food allergy associated to Parkinson diseases in Venezuelan patients. Clin Transl Allergy 2015. [PMCID: PMC4412370 DOI: 10.1186/2045-7022-5-s3-p140] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Franca Puccio
- Instituto de Biomedicina‐MSDSUCVCaracasVenezuela
- Escuela de Nutrición y DietéticaCaracasVenezuela
| | - R Rojas
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - I Mosquera
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - D Cifarrelli
- Instituto de Biomedicina‐MSDSUCVCaracasVenezuela
| | - A Hernández
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - M Lizarralde
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - G Peña
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - L Jaua
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - C Mendoza
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
| | - R Reyes
- Clínica de Dolor Crónico y FibromialgiaInstituto de Neurología y Neurociencias AplicadasCaracasVenezuela
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Abstract
Stabilization of LDH nanoparticles containing chloride and dodecylsulfate with BSA points to optimization of drug nanocarriers based on these solids.
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Affiliation(s)
- R. Rojas
- INFIQC-CONICET
- Departamento de Fisicoquímica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - C. E. Giacomelli
- INFIQC-CONICET
- Departamento de Fisicoquímica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
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Rojas R, Jimenez-Kairuz A, Manzo R, Giacomelli C. Release kinetics from LDH-drug hybrids: Effect of layers stacking and drug solubility and polarity. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.09.031] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ippen FM, Pfannl R, Rojas R, Mahadevan A, Kasper E. ED-09 * TANCYTIC EPENDYMOMA: PRESENTATION OF A RARE CYSTIC DISEASE VARIANT AND REVIEW OF LITERATURE. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou253.9] [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: 11/13/2022] Open
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Picard G, Valadeau C, Albán-Castillo J, Rojas R, Starr JR, Callejas-Posada R, Bennett SAL, Arnason JT. Assessment of in vitro pharmacological effect of Neotropical Piperaceae in GABAergic bioassays in relation to plants traditionally used for folk illness by the Yanesha (Peru). J Ethnopharmacol 2014; 155:1500-1507. [PMID: 25091465 DOI: 10.1016/j.jep.2014.07.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/30/2014] [Accepted: 07/17/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A previous pilot ethnobotanical and ethnopharmacological study with the Q'echi׳ Maya identified the family Piperaceae, as an important taxonomic group traditionally used for the treatment of epileptic and culture-bound anxiety disorders and possessing activity in the GABA system. Following that lead, a botanical survey was conducted in Peru, where 47 species of Piperaceae were collected including 21 plants traditionally used for folk illnesses by the Yanesha of Peru, an indigenous Amazonian group. MATERIALS AND METHODS Two high throughput bioassays were used to quantify the in vitro activity of botanical extracts on the GABA system. RESULTS Plant extracts demonstrated moderate to high affinity to the γ-aminobutyric acid benzodiazepine (GABA-BZD) receptor. In addition, extracts demonstrated low to moderate activity in the inhibition of the GABA-transaminase, with select plants exhibiting significant activity. Plants indicated by the Yanesha showed comparable activity to the other Piperaceae plants collected. Piper cremii was the most active plant in the GABA-BZD receptor assay, and Drymaria cordata (Caryophyllaceae) in the GABA-T assay. CONCLUSION The study provides evidence that there is a pharmacological basis behind the use of plants in the treatment of susto and mal aire in both Central and South America, and we propose that the possible mechanism of action includes an interaction with the GABA-T enzyme and/or the GABAA-BZD receptor.
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Affiliation(s)
- G Picard
- Department of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5
| | - C Valadeau
- Centre EREA, UMR 7186, CNRS-Bat. D, Haudricourt, 7 rue Guy Moquet, 94801 Villejuif cedex, France
| | - J Albán-Castillo
- Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Av. Arenales 1256, Jesús María, Lima, Perú
| | - R Rojas
- Laboratorio de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado, San Martin de Porres, Lima, Perú
| | - J R Starr
- Department of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5; Canadian Museum of Nature, Ottawa, ON, Canada K1N 6P4
| | - R Callejas-Posada
- Facultad de Ciencias Exactas y Naturales, Instituto de Biología, Universidad de Antioquia, Apartado postal 1226, Medellín, Colombia
| | - S A L Bennett
- Neural Regeneration Laboratory and Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, Canada K1H 8M5
| | - J T Arnason
- Department of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5
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Sarkar SN, Papavassiliou E, Rojas R, Teich DL, Hackney DB, Bhadelia RA, Stormann J, Alterman RL. Low-power inversion recovery MRI preserves brain tissue contrast for patients with Parkinson disease with deep brain stimulators. AJNR Am J Neuroradiol 2014; 35:1325-9. [PMID: 24676004 DOI: 10.3174/ajnr.a3896] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Fast spin-echo short τ inversion recovery sequences have been very useful for MR imaging-guided deep brain stimulation procedures in Parkinson disease. However, high-quality fast spin-echo imaging deposits significant heat, exceeding FDA-approved limits when patients already have undergone deep brain stimulation and need a second one or a routine brain MR imaging for neurologic indications. We have developed a STIR sequence with an ultra-low specific absorption rate that meets hardware limitations and produces adequate tissue contrast in cortical and subcortical brain tissues for deep brain stimulation recipients. MATERIALS AND METHODS Thirteen patients with medically refractory Parkinson disease who qualified for deep brain stimulation were imaged at 1.5T with a fast spin-echo short τ inversion recovery sequence modified to meet conditional MR imaging hardware and specific absorption rate restrictions. Tissue contrast-to-noise ratios and implant localization were objectively and subjectively compared by 2 neuroradiologists, and image quality for surgical planning was assessed by a neurosurgeon for high and low specific absorption rate images. RESULTS The mean contrast-to-noise ratio for cerebral tissues without including the contrast-to-noise ratio for ventricular fluid was 35 and 31 for high and low specific absorption rate images. Subjective ratings for low specific absorption rate tissue contrast in 77% of patients were identical to (and in a few cases higher than) those of high specific absorption rate contrast, while the neurosurgical coordinates for fusing the stereotactic atlas with low specific absorption rate MR imaging were equivalent to those of the high specific absorption rate for 69% of patients. CONCLUSIONS Patients with Parkinson disease who have already had a deep brain stimulation face a risk of neural injury if routine, high specific absorption rate MR imaging is performed. Our modified fast spin-echo short τ inversion recovery sequence conforms to very conservative radiofrequency safety limits, while it maintains high tissue contrast for presurgical planning, postsurgical assessment, and radiologic evaluations with greater confidence for radiofrequency safety.
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Affiliation(s)
- S N Sarkar
- From the Department of Radiology (S.N.S., R.R., D.L.T., D.B.H., R.A.B., J.S.)
| | - E Papavassiliou
- Division of Neurosurgery (E.P., R.L.A.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - R Rojas
- From the Department of Radiology (S.N.S., R.R., D.L.T., D.B.H., R.A.B., J.S.)
| | - D L Teich
- From the Department of Radiology (S.N.S., R.R., D.L.T., D.B.H., R.A.B., J.S.)
| | - D B Hackney
- From the Department of Radiology (S.N.S., R.R., D.L.T., D.B.H., R.A.B., J.S.)
| | - R A Bhadelia
- From the Department of Radiology (S.N.S., R.R., D.L.T., D.B.H., R.A.B., J.S.)
| | - J Stormann
- From the Department of Radiology (S.N.S., R.R., D.L.T., D.B.H., R.A.B., J.S.)
| | - R L Alterman
- Division of Neurosurgery (E.P., R.L.A.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
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Martinez-Avila GCG, Aguilera AF, Saucedo S, Rojas R, Rodriguez R, Aguilar CN. Fruit wastes fermentation for phenolic antioxidants production and their application in manufacture of edible coatings and films. Crit Rev Food Sci Nutr 2014; 54:303-11. [PMID: 24188304 DOI: 10.1080/10408398.2011.584135] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Agro-industrial by-products are important sources of potent bioactive phenolic compounds. These compounds are of extreme relevance for food and pharmacological industries due to their great variety of biological activities. Fermentation represents an environmentally clean technology for production and extraction of these bioactive compounds, providing high quality and high activity extracts, which can be incorporated in foods using coatings/films wax-based in order to avoid alterations in their quality. In this document is presented an overview about importance and benefits of solid-state fermentation, pointing out this bioprocess as an alternative technology for use agro-industrial by-products as substrates to produce valuable secondary metabolites and their applications as food quality conservatives.
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Affiliation(s)
- G C G Martinez-Avila
- a Department of Food Science and Technology , Universidad Autónoma de Coahuila, Blvd. Venustiano Carranza S/N Col. República Oriente , 25280 , Saltillo , Coahuila , México
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Rojas R, Chateau R, Gaete C, Droguett C. Unusual complications of orthognathic surgery patients. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.578] [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: 11/25/2022]
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Rojas R, Lasso J, De la Rivera M, Alarcón F, Sepulveda M. Clinical and epidemiological features of OSAS patients. Analysis of nine years in a sleep unit. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.475] [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: 11/25/2022]
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Puccio FA, Rojas R, Mosquera I, Hernandez A, Mosquera R, Jaua L, Lizarrale M, Cifarrelli D, Reyes R. Food allergy is an important diseases associated to fibromyalgia. Clin Transl Allergy 2013. [PMCID: PMC3723944 DOI: 10.1186/2045-7022-3-s3-p120] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Oehninger L, Araneda JF, Morales-Verdejo C, Muñoz-Castro A, Mac-Leod Carey D, Adams C, Arratia-Pérez R, Rojas R, Manríquez JM, Chávez I. Novel titanocene derived from a partially alkylated s-indacene: Synthesis, characterization and comparative study with its zirconium analog. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.09.032] [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: 10/27/2022]
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Avila L, Barroso A, Valdez R, Hijar M, Del Rio A, Rojas R. Increased intimate partner violence in users of Mexican public health services: fact or improved registry? Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040590q.5] [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: 11/03/2022]
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Rojas R, De Leon Ponce M. GUADALAJARA, MEXICO: DRINKING AND DRIVING STRATEGY. Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040580d.2] [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: 11/03/2022]
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Dosio A, Paruolo P, Rojas R. Bias correction of the ENSEMBLES high resolution climate change projections for use by impact models: Analysis of the climate change signal. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jd017968] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rojas R, Feyen L, Bianchi A, Dosio A. Assessment of future flood hazard in Europe using a large ensemble of bias-corrected regional climate simulations. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jd017461] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ochoa-Avilés A, Andrade S, Huynh T, Verstraeten R, Lachat C, Rojas R, Donoso S, Manuel-y-Keenoy B, Kolsteren P. Prevalence and socioeconomic differences of risk factors of cardiovascular disease in Ecuadorian adolescents. Pediatr Obes 2012; 7:274-83. [PMID: 22715112 DOI: 10.1111/j.2047-6310.2012.00061.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [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] [Received: 10/25/2011] [Revised: 02/11/2012] [Accepted: 03/07/2012] [Indexed: 12/18/2022]
Abstract
PURPOSE The aim of this paper is to report the prevalence of cardiovascular risk factors and socioeconomic differences in school-going Ecuadorian adolescents. METHODS A cross-sectional study was performed from January 2008 until April 2009 in 770 adolescents aged 10 to 16 years old, who attend secondary schools in an urban (Cuenca), and rural area (Nabón) in Ecuador. Data collected for the overall sample included anthropometric variables (weight, height and waist circumference), blood pressure and socio-demographic characteristics. Fasting blood glucose and lipid profile determinations were collected in a subsample of 334 adolescents. RESULTS The most prevalent cardiovascular risk factors were dyslipidemia (34.2%), abdominal obesity (19.7%) and overweight (18.0%). The prevalence of the remaining cardiovascular risk factors were high levels of blood pressure (6.2%) and obesity (2.1%). Boys were 3.3 times (P < 0.001) more likely to have risk levels of blood pressure. Compared to their peers from lower socioeconomic groups, children from better off socioeconomic strata were 1.5 times (P = 0.048) more likely to be overweight/obese and 1.5 times (P = 0.046) more likely to have abdominal obesity. Overweight and obese children were 4.4 times more likely to have dyslipidemia (P < 0.001). Children living in the rural area were 2.8 times (P = 0.002) more likely to have dyslipidemia than those from the urban area. CONCLUSIONS Our results demonstrate the advanced levels of the nutrition transition in this Ecuadorian adolescent population. Primary health care should monitor and take actions to address this public health problem in adolescents.
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Affiliation(s)
- A Ochoa-Avilés
- Food Nutrition and Health Program, Universidad de Cuenca, Cuenca, Ecuador.
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Rishniw M, Hess A, Rojas R, Ritchie C, Laws AG, Staudt T, Bowman D. Dirofilarial hemoptytic expectoration in 5 dogs - an uncommon manifestation of canine heartworm disease. J Vet Intern Med 2012; 26:1061-3. [PMID: 22708501 DOI: 10.1111/j.1939-1676.2012.00955.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 04/03/2012] [Accepted: 04/25/2012] [Indexed: 11/27/2022] Open
Affiliation(s)
- M Rishniw
- Veterinary Information Network, Davis, CA 95616, USA.
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Rojas R, Morales MC, Rivadeneira MM, Thiel M. Male morphotypes in the Andean river shrimp Cryphiops caementarius (Decapoda: Caridea): morphology, coloration and injuries. J Zool (1987) 2012. [DOI: 10.1111/j.1469-7998.2012.00922.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Rojas
- Facultad de Ciencias del Mar; Universidad Católica del Norte; Coquimbo; Chile
| | - M. C. Morales
- Facultad de Ciencias del Mar; Universidad Católica del Norte; Coquimbo; Chile
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Luk A, Murthy N, Wang W, Rojas R, Kohn J. Study of nanoscale structures in hydrated biomaterials using small-angle neutron scattering. Acta Biomater 2012; 8:1459-68. [PMID: 22227373 DOI: 10.1016/j.actbio.2011.12.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 12/15/2011] [Accepted: 12/18/2011] [Indexed: 10/14/2022]
Abstract
Distribution of water in three classes of biomedically relevant and degradable polymers was investigated using small-angle neutron scattering. In semicrystalline polymers, such as poly(lactic acid) and poly(glycolic acid), water was found to diffuse preferentially into the non-crystalline regions. In amorphous polymers, such as poly(d,l-lactic acid) and poly(lactic-co-glycolic acid), the scattering after 7 days of incubation was attributed to water in microvoids that form following the hydrolytic degradation of the polymer. In amorphous copolymers containing hydrophobic segments (desaminotyrosyl-tyrosine ethyl ester) and hydrophilic blocks (poly(ethylene glycol) (PEG)), a sequence of distinct regimes of hydration were observed: homogeneous distribution (∼10Å length scales) at <13 wt.% PEG (∼1 water per EG), clusters of hydrated domains (∼50Å radius) separated at 24 wt.% PEG (1-2 water per EG), uniformly distributed hydrated domains at 41 wt.% PEG (∼4 water per EG) and phase inversion at >50 wt.% PEG (>6 water per EG). Increasing the PEG content increased the number of these domains with only a small decrease in distance between the domains. These discrete domains appeared to coalesce to form submicron droplets at ∼60°C, above the melting temperature of crystalline PEG. The significance of such observations on the evolution of micrometer-size channels that form during hydrolytic erosion is discussed.
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Odonne G, Herbette G, Eparvier V, Bourdy G, Rojas R, Sauvain M, Stien D. Antileishmanial sesquiterpene lactones from Pseudelephantopus spicatus, a traditional remedy from the Chayahuita Amerindians (Peru). Part III. J Ethnopharmacol 2011; 137:875-9. [PMID: 21771652 DOI: 10.1016/j.jep.2011.07.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 06/22/2011] [Accepted: 07/03/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The study of traditional remedies used by the Chayahuita, an ethnic group from the Peruvian Amazonia, has prompted us to investigate in detail the ethanolic extract of Pseudelephantopus spicatus (Juss. ex Aubl.) C.F. Baker, which has demonstrated strong biological activity towards Leishmania amazonensis. Our goal was to discover the active compound of this plant-based remedy. MATERIALS AND METHODS A bioguided fractionation of the crude extract was undertaken based on the biological activity recorded against Leishmania amazonensis axenic amastigotes in in vitro bioassays. RESULTS Three strongly to moderately active compounds were isolated: two hirsutinolides (the 8,13-diacetyl-piptocarphol and the 8-acetyl-13-O-ethyl-piptocarphol) and ursolic acid. IC(50) against Leishmania amazonensis axenic amastigotes are respectively 0.2, 0.37 and 0.99 μM (while IC(50) of amphotericin B is 0.41 μM). These compounds have never been isolated from this plant species, and germacranolides have never been identified as potential antileishmanial agents. CONCLUSIONS The compounds isolated from Pseudelephantopus spicatus account for the antileishmanial activity of the plant, thus giving support to its use by the Chayahuita in Peru.
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Affiliation(s)
- G Odonne
- CNRS - UMR Ecofog, Université des Antilles et de la Guyane, BP792, 97337 Cayenne cedex, France.
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Uhlemann AC, Dumortier C, Hafer C, Taylor BS, Sánchez J, Rodriguez-Taveras C, Leon P, Rojas R, Olive C, Lowy FD. Molecular characterization of Staphylococcus aureus from outpatients in the Caribbean reveals the presence of pandemic clones. Eur J Clin Microbiol Infect Dis 2011; 31:505-11. [PMID: 21789605 DOI: 10.1007/s10096-011-1339-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 06/23/2011] [Indexed: 11/29/2022]
Abstract
Staphylococcus aureus infections continue to pose a global public health problem. Frequently, this epidemic is driven by the successful spread of single S. aureus clones within a geographic region, but international travel has been recognized as a potential risk factor for S. aureus infections. To study the molecular epidemiology of S. aureus infections in the Caribbean, a major international tourist destination, we collected methicillin-susceptible S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA) isolates from community-onset infections in the Dominican Republic (n = 112) and Martinique (n = 143). Isolates were characterized by a combination of pulsed-field gel electrophoresis (PFGE), spa typing, and multilocus sequence typing (MLST) typing. In Martinique, MRSA infections (n = 56) were mainly caused by t304-ST8 strains (n = 44), whereas MSSA isolates were derived from genetically diverse backgrounds. Among MRSA strains (n = 22) from the Dominican Republic, ST5, ST30, and ST72 predominated, while ST30 t665-PVL+ (30/90) accounted for a substantial number of MSSA infections. Despite epidemiological differences in sample collections from both countries, a considerable number of MSSA infections (~10%) were caused by ST5 and ST398 isolates at each site. Further phylogenetic analysis suggests the presence of lineages shared by the two countries, followed by recent genetic diversification unique to each site. Our findings also imply the frequent import and exchange of international S. aureus strains in the Caribbean.
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Affiliation(s)
- A-C Uhlemann
- Department of Medicine, Division of Infectious Diseases, Columbia University Medical Center, 630W 168th Street, New York, NY 10032, USA.
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Spannhoff K, Rojas R, Fröhlich R, Kehr G, Erker G. Reactions of Topologically Related “nacnacH-CN” and “P-nacnacH-CN” Chelate Ligand Systems with HB(C6F5)2. Organometallics 2011. [DOI: 10.1021/om200116q] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kirsten Spannhoff
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Rene Rojas
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Santiago-22, Chile
| | - Roland Fröhlich
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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