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Scheller EL, Razzell Hollis J, Cardarelli EL, Steele A, Beegle LW, Bhartia R, Conrad P, Uckert K, Sharma S, Ehlmann BL, Abbey WJ, Asher SA, Benison KC, Berger EL, Beyssac O, Bleefeld BL, Bosak T, Brown AJ, Burton AS, Bykov SV, Cloutis E, Fairén AG, DeFlores L, Farley KA, Fey DM, Fornaro T, Fox AC, Fries M, Hickman-Lewis K, Hug WF, Huggett JE, Imbeah S, Jakubek RS, Kah LC, Kelemen P, Kennedy MR, Kizovski T, Lee C, Liu Y, Mandon L, McCubbin FM, Moore KR, Nixon BE, Núñez JI, Rodriguez Sanchez-Vahamonde C, Roppel RD, Schulte M, Sephton MA, Sharma SK, Siljeström S, Shkolyar S, Shuster DL, Simon JI, Smith RJ, Stack KM, Steadman K, Weiss BP, Werynski A, Williams AJ, Wiens RC, Williford KH, Winchell K, Wogsland B, Yanchilina A, Yingling R, Zorzano MP. Aqueous alteration processes in Jezero crater, Mars-implications for organic geochemistry. Science 2022; 378:1105-1110. [PMID: 36417498 DOI: 10.1126/science.abo5204] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The Perseverance rover landed in Jezero crater, Mars, in February 2021. We used the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) instrument to perform deep-ultraviolet Raman and fluorescence spectroscopy of three rocks within the crater. We identify evidence for two distinct ancient aqueous environments at different times. Reactions with liquid water formed carbonates in an olivine-rich igneous rock. A sulfate-perchlorate mixture is present in the rocks, which probably formed by later modifications of the rocks by brine. Fluorescence signatures consistent with aromatic organic compounds occur throughout these rocks and are preserved in minerals related to both aqueous environments.
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Affiliation(s)
- Eva L Scheller
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.,Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Joseph Razzell Hollis
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.,The Natural History Museum, London, UK
| | - Emily L Cardarelli
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Andrew Steele
- Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC, USA
| | - Luther W Beegle
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | | | - Pamela Conrad
- Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC, USA
| | - Kyle Uckert
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Sunanda Sharma
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Bethany L Ehlmann
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.,NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - William J Abbey
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Sanford A Asher
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kathleen C Benison
- Department of Geology and Geography, West Virginia University, Morgantown, WV, USA
| | - Eve L Berger
- Texas State University, San Marcos, TX, USA.,Jacobs Johnson Space Center Engineering, Technology and Science Contract, Houston, TX, USA.,NASA Johnson Space Center, Houston, TX, USA
| | - Olivier Beyssac
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Centre National de la Recherche Scientifique, Sorbonne Université, Muséum National d'Histoire Naturelle, 75005 Paris, France
| | | | - Tanja Bosak
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | | | - Sergei V Bykov
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ed Cloutis
- Geography, The University of Winnipeg, Winnipeg, MB, Canada
| | - Alberto G Fairén
- Centro de Astrobiología, Consejo Superior de Investigaciones Cientificas-Instituto Nacional de Tecnica Aeroespacial, Madrid, Spain.,Department of Astronomy, Cornell University, Ithaca, NY, USA
| | - Lauren DeFlores
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Kenneth A Farley
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA
| | | | - Teresa Fornaro
- Astrophysical Observatory of Arcetri, Istituto Nazionale di Astrofisica, Florence, Italy
| | | | - Marc Fries
- NASA Johnson Space Center, Houston, TX, USA
| | - Keyron Hickman-Lewis
- Department of Earth Sciences, The Natural History Museum, London, UK.,Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Bologna, Italy
| | | | | | | | | | - Linda C Kah
- Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN, USA
| | - Peter Kelemen
- Lamont Doherty Earth Observatory, Columbia University, Palisades, NY, USA
| | | | - Tanya Kizovski
- Department of Earth Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Carina Lee
- Lunar and Planetary Institute, Universities Space Research Association, Houston, TX, USA
| | - Yang Liu
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Lucia Mandon
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Centre National de la Recherche Scientifique, Sorbonne Université, Université Paris Diderot, 92195 Meudon, France
| | | | - Kelsey R Moore
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | | | - Jorge I Núñez
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
| | | | - Ryan D Roppel
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mitchell Schulte
- Mars Exploration Program, NASA Headquarters, Washington, DC, USA
| | - Mark A Sephton
- Earth Science and Engineering, South Kensington Campus, Imperial College London, SW7 2AZ London, UK
| | - Shiv K Sharma
- Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, Honolulu, HI, USA
| | | | - Svetlana Shkolyar
- Department of Astronomy, University of Maryland, College Park, MD, USA.,NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - David L Shuster
- Earth and Planetary Science, University of California Berkeley, Berkeley, CA, USA
| | | | - Rebecca J Smith
- Department of Geosciences, Stony Brook University, Stony Brook, NY, USA
| | - Kathryn M Stack
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Kim Steadman
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Benjamin P Weiss
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Amy J Williams
- Department of Geological Sciences, University of Florida, Gainesville, FL, USA
| | - Roger C Wiens
- Los Alamos National Laboratory, Los Alamos, NM, USA.,Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, USA
| | - Kenneth H Williford
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.,Blue Marble Space Institute of Science, Seattle, WA, USA
| | | | - Brittan Wogsland
- Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN, USA
| | | | | | - Maria-Paz Zorzano
- Centro de Astrobiología, Consejo Superior de Investigaciones Cientificas-Instituto Nacional de Tecnica Aeroespacial, Madrid, Spain
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Aiken JM, Sohn RA, Renard F, Matter J, Kelemen P, Jamtveit B. Gas Migration Episodes Observed During Peridotite Alteration in the Samail Ophiolite, Oman. Geophys Res Lett 2022; 49:e2022GL100395. [PMID: 36589777 PMCID: PMC9787822 DOI: 10.1029/2022gl100395] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/04/2022] [Accepted: 10/11/2022] [Indexed: 06/17/2023]
Abstract
Serpentinization and carbonation of mantle rocks (peridotite alteration) are fundamentally important processes for a spectrum of geoscience topics, including arc volcanism, earthquake processes, chemosynthetic biological communities, and carbon sequestration. Data from a hydrophone array deployed in the Multi-Borehole Observatory (MBO) of the Oman Drilling Project demonstrates that free gas generated by peridotite alteration and/or microbial activity migrates through the formation in discrete bursts of activity. We detected several, minutes-long, swarms of gas discharge into Hole BA1B of the MBO over the course of a 9 month observation interval. The episodic nature of the migration events indicates that free gas accumulates in the permeable flow network, is pressurized, and discharges rapidly into the borehole when a critical pressure, likely associated with a capillary barrier at a flow constriction, is reached. Our observations reveal a dynamic mode of fluid migration during serpentinization, and highlight the important role that free gas can play in modulating pore pressure, fluid flow, and alteration kinetics during peridotite weathering.
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Affiliation(s)
- John M. Aiken
- Njord CentreDepartments of Physics and GeosciencesUniversity of OsloOsloNorway
| | - Robert A. Sohn
- Department of Geology and GeophysicsWoods Hole Oceanographic InstitutionWoods HoleMAUSA
| | - François Renard
- Njord CentreDepartments of Physics and GeosciencesUniversity of OsloOsloNorway
- CNRSIRDISTerreUniversity Grenoble AlpesGrenoble INPUniversity Savoie Mont BlancUniversity Gustave EiffelGrenobleFrance
| | - Juerg Matter
- School of Ocean and Earth ScienceUniversity of SouthamptonSouthamptonUK
| | - Peter Kelemen
- Lamont Doherty Earth ObservatoryColumbia UniversityPalisadesNYUSA
| | - Bjørn Jamtveit
- Njord CentreDepartments of Physics and GeosciencesUniversity of OsloOsloNorway
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Leask EK, Ehlmann BL, Greenberger RN, Pinet P, Daydou Y, Ceuleneer G, Kelemen P. Tracing Carbonate Formation, Serpentinization, and Biological Materials With Micro-/Meso-Scale Infrared Imaging Spectroscopy in a Mars Analog System, Samail Ophiolite, Oman. Earth Space Sci 2021; 8:e2021EA001637. [PMID: 34820479 PMCID: PMC8596454 DOI: 10.1029/2021ea001637] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 09/14/2021] [Accepted: 09/20/2021] [Indexed: 05/25/2023]
Abstract
Visible-shortwave infrared (VSWIR) imaging spectrometers map composition remotely with spatial context, typically at many meters-scale from orbital and airborne data. Here, we evaluate VSWIR imaging spectroscopy capabilities at centimeters to sub-millimeter scale at the Samail Ophiolite, Oman, where mafic and ultramafic lithologies and their alteration products, including serpentine and carbonates, are exposed in a semi-arid environment, analogous to similar mineral associations observed from Mars orbit that will be explored by the Mars-2020 rover. At outcrop and hand specimen scales, VSWIR spectroscopy (a) identifies cross-cutting veins of calcite, dolomite, magnesite, serpentine, and chlorite that record pathways and time-order of multiple alteration events of changing fluid composition; (b) detects small-scale, partially altered remnant pyroxenes and localized epidote and prehnite that indicate protolith composition and temperatures and pressures of multiple generations of faulting and alteration, respectively; and (c) discriminates between spectrally similar carbonate and serpentine phases and carbonate solid solutions. In natural magnesite veins, minor amounts of ferrous iron can appear similar to olivine's strong 1-μm absorption, though no olivine is present. We also find that mineral identification for carbonate and serpentine in mixtures with each other is strongly scale- and texture-dependent; ∼40 area% dolomite in mm-scale veins at one serpentinite outcrop and ∼18 area% serpentine in a calcite-rich travertine outcrop are not discriminated until spatial scales of <∼1-2 cm/pixel. We found biological materials, for example bacterial mats versus vascular plants, are differentiated using wavelengths <1 μm while shortwave infrared wavelengths >1 μm are required to identify most organic materials and distinguish most mineral phases.
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Affiliation(s)
- Ellen K. Leask
- Division of Geological & Planetary SciencesCalifornia Institute of TechnologyPasadenaCAUSA
- Now at Johns Hopkins University/Applied Physics LaboratoryLaurelMDUSA
| | - Bethany L. Ehlmann
- Division of Geological & Planetary SciencesCalifornia Institute of TechnologyPasadenaCAUSA
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCAUSA
| | - Rebecca N. Greenberger
- Division of Geological & Planetary SciencesCalifornia Institute of TechnologyPasadenaCAUSA
| | - Patrick Pinet
- Institut de Recherche en Astrophysique et Planétologie (IRAP)Université de ToulouseCNRSUPSCNESToulouseFrance
| | - Yves Daydou
- Institut de Recherche en Astrophysique et Planétologie (IRAP)Université de ToulouseCNRSUPSCNESToulouseFrance
| | - Georges Ceuleneer
- Geosciences Environnement Toulouse (GET)Université de ToulouseCNRSUPSToulouseFrance
| | - Peter Kelemen
- Department of Earth & Environmental SciencesColumbia UniversityLamont Doherty Earth ObservatoryPalisadesNYUSA
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Staber PB, Jurczak W, Greil R, Vucinic V, Middeke JM, Montillo M, Munir T, Neumeister P, Schetelig J, Stilgenbauer S, Striebel F, Dirnberger-Hertweck M, Weirather J, Brugger W, Kelemen P, Wendtner CM, Woyach JA. Tafasitamab combined with idelalisib or venetoclax in patients with CLL previously treated with a BTK inhibitor. Leuk Lymphoma 2021; 62:3440-3451. [PMID: 34414843 DOI: 10.1080/10428194.2021.1964020] [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] [Indexed: 10/20/2022]
Abstract
Patients with relapsed/refractory chronic lymphocytic leukemia (R/R CLL) whose treatment failed with a Bruton's tyrosine kinase inhibitor have poor outcomes. We investigated tafasitamab plus idelalisib (cohort A) or venetoclax (cohort B) in this patient population in a phase II study (NCT02639910). In total, 24 patients were enrolled (cohort A: n = 11, median time on study, 7.4 months; cohort B: n = 13, median time on study, 15.6 months). The most common treatment-emergent adverse event (TEAE) in cohort A was anemia (63.6%) and in cohort B was infusion-related reaction (53.8%). The most common severe TEAE was neutropenia (cohort A: 45.5%; cohort B: 46.2%). The best overall response rate was 90.9% (cohort A) and 76.9% (cohort B). Undetectable minimal residual disease in peripheral blood was achieved in 2/8 patients (cohort A) and 6/7 patients (cohort B). Overall, these results suggest that anti-CD19 antibody-based combinations may be important in the treatment of patients with CLL.
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Affiliation(s)
- Philipp Bernhard Staber
- Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Wojciech Jurczak
- Department of Clinical Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, Krakow, Poland
| | - Richard Greil
- Laboratory for Immunological and Molecular Cancer Research, Salzburg Cancer Research Institute, Salzburg, Austria
| | - Vladan Vucinic
- Department of Hematology and Internal Oncology, University Hospital Leipzig AöR, Leipzig, Germany
| | - Jan Moritz Middeke
- Medical Clinic 1, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Marco Montillo
- Hematology Department, Niguarda Cancer Center, Niguarda Hospital, Milan, Italy
| | - Talha Munir
- Clinical Hematology, The Leeds Teaching Hospital, Leeds, UK
| | - Peter Neumeister
- Clinical Department of Hematology, Medical University of Graz, Graz, Austria
| | - Johannes Schetelig
- Medical Clinic 1, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | | | | | | | | | | | | | - Clemens-Martin Wendtner
- Department of Hematology, Oncology, Immunology, Palliative Medicine, Infectious Diseases, and Tropical Medicine, Munich Clinic Schwabing, Munich, Germany
| | - Jennifer Ann Woyach
- Division of Hematology, Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
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McQueen N, Kelemen P, Dipple G, Renforth P, Wilcox J. Ambient weathering of magnesium oxide for CO 2 removal from air. Nat Commun 2020; 11:3299. [PMID: 32620820 PMCID: PMC7335196 DOI: 10.1038/s41467-020-16510-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 01/31/2020] [Accepted: 05/06/2020] [Indexed: 11/09/2022] Open
Abstract
To avoid dangerous climate change, new technologies must remove billions of tonnes of CO2 from the atmosphere every year by mid-century. Here we detail a land-based enhanced weathering cycle utilizing magnesite (MgCO3) feedstock to repeatedly capture CO2 from the atmosphere. In this process, MgCO3 is calcined, producing caustic magnesia (MgO) and high-purity CO2. This MgO is spread over land to carbonate for a year by reacting with atmospheric CO2. The carbonate minerals are then recollected and re-calcined. The reproduced MgO is spread over land to carbonate again. We show this process could cost approximately $46-159 tCO2-1 net removed from the atmosphere, considering grid and solar electricity without post-processing costs. This technology may achieve lower costs than projections for more extensively engineered Direct Air Capture methods. It has the scalable potential to remove at least 2-3 GtCO2 year-1, and may make a meaningful contribution to mitigating climate change.
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Affiliation(s)
- Noah McQueen
- Department of Chemical Engineering, Clean Energy Conversions Lab, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609, USA
| | - Peter Kelemen
- Department of Earth & Environmental Sciences, Lamont-Doherty Earth Observatory, Columbia University, 91 Rte 9W, Palisades, NY, 10964, USA
| | - Greg Dipple
- Department of Earth, Ocean, and Atmospheric Sciences, Bradshaw Research Initiative for Minerals and Mining, University of British Columbia, 2020-2207 Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Phil Renforth
- Research Centre for Carbon Solutions, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Jennifer Wilcox
- Department of Chemical Engineering, Clean Energy Conversions Lab, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609, USA.
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Kölsch H, Lütjohann D, Jessen F, Popp J, Hentschel F, Kelemen P, Schmitz S, Maier W, Heun R. CYP46A1 variants influence Alzheimer’s disease risk and brain cholesterol metabolism. Eur Psychiatry 2020; 24:183-90. [DOI: 10.1016/j.eurpsy.2008.12.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2008] [Revised: 11/25/2008] [Accepted: 12/15/2008] [Indexed: 10/21/2022] Open
Abstract
AbstractBackgroundCholesterol 24S-hydroxylase (CYP46) catalyzes the conversion of cholesterol to 24S-hydroxycholesterol, the primary cerebral cholesterol elimination product. Only few gene variations in CYP46 gene (CYP46A1) have been investigated for their relevance as genetic risk factors of Alzheimer’s disease (AD) and results are contradictory.MethodsWe performed a gene variability screening in CYP46A1 and investigated the effect of gene variants on the risk of AD and on CSF levels of cholesterol and 24S-hydroxycholesterol.ResultsTwo of the identified 16 SNPs in CYP46A1 influenced AD risk in our study (rs7157609: p = 0.016; rs4900442: p = 0.019). The interaction term of both SNPs was also associated with an increased risk of AD (p = 0.006). Haplotypes including both SNPs were calculated and haplotype G–C was identified to influence the risk of AD (p = 0.005). AD patients and non-demented controls, who were carriers of the G–C haplotype, presented with reduced CSF levels of 24S-hydroxycholesterol (p = 0.001) and cholesterol (p < 0.001).ConclusionOur results suggest that CYP46A1 gene variations might act as risk factor for AD via an influence on brain cholesterol metabolism.
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McCaig AM, Früh-Green GL, Kelemen P, Teagle DAH. Serpentinite in the Earth system. Philos Trans A Math Phys Eng Sci 2020; 378:20190332. [PMID: 31902338 PMCID: PMC7015303 DOI: 10.1098/rsta.2019.0332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Affiliation(s)
- Andrew M. McCaig
- School of Earth and Environment, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
| | | | - Peter Kelemen
- Lamont-Doherty Earth Observatory, Palisades, NY, USA
- Earth and Environmental Sciences, Columbia University, New York, NY, USA
| | - Damon A. H. Teagle
- Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, European Way, Southampton SO14 3ZH, UK
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Matrai T, Kelemen P, Pukancsik D, Ujhelyi M, Kovacs E, Stamatiou A, Ivady G, Kenessey I, Kovacs T, Smanyko V, Rubovszky G, Matrai Z. Evaluation of the Central Pedicled,Modified Wise-Pattern Technique as a Standard Level II Oncoplastic Breast-Conserving Surgery: A Retrospective Clinicopathological Study of 190 Breast Cancer Patients. Eur J Surg Oncol 2020. [DOI: 10.1016/j.ejso.2019.11.156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Savolt A, Cserni G, Lazar G, Maraz R, Kelemen P, Kovacs E, Gyorffy B, Matrai Z. Sentinel Lymph Node Biopsy Following Previous Axillary Surgery in Recurrent Breast Cancer. Eur J Surg Oncol 2020. [DOI: 10.1016/j.ejso.2019.11.146] [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] Open
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Dorogi B, Matrai T, Bukovszky B, Savolt A, Polgar C, Kelemen P, Kovacs T, Renyi-Vamos F, Ivady G, Kovacs E, Teglas M, Kasler M, Matrai Z. Mapping of the functional anatomy of lymphatic drainage to the axilla in early breast cancer: a cohort study of 933 cases. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.092] [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: 11/30/2022] Open
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Ujhelyi M, Pukancsik D, Kelemen P, Kovács E, Kenessey I, Bak M, Kásler M, Kovács T, Mátrai Z. Barriers to organized mammography screening program in Hungary: a questionnaire-based study of 3 313 women. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.112] [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: 11/28/2022] Open
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Mátrai Z, Ujhelyi M, Kovács T, Kelemen P, Sávolt Á, Kovács E, Éles K, Mészáros N, Kenessey I, Kásler M, Pukancsik D. Evaluation of the retroglandular oncoplastic technique as a standard Level I oncoplastic breast-conserving surgery. A retrospective clinico-pathological study of 102 breast cancer patients. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.100] [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: 10/27/2022] Open
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13
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Abbott AM, Valente SA, Loftus L, Tendulkar RD, Greif JM, Bethke KP, Donnelly ED, Lottich C, Ross DL, Friedman NB, Bedi CG, Joh JE, Kelemen P, Hoefer RA, Kang SK, Ruffer J, Police A, Fyles A, Graves GM, Willey SC, Tousimis EA, Small W, Lyons J, Grobmyer S, Laronga C. A multi-institutional analysis of intraoperative radiotherapy for early breast cancer: Does age matter? Am J Surg 2017; 214:629-633. [PMID: 28918848 DOI: 10.1016/j.amjsurg.2017.06.018] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Single-session intraoperative radiation therapy (IORT) minimizes treatment demands associated with traditional whole breast radiation therapy (WBRT) but outcomes on local disease control and morbidity among the elderly is limited. METHODS A multi-institutional retrospective registry was established from 19 centers utilizing IORT from 2007 to 2013. Patient, tumor, and treatment variables were analyzed for ages <70 and ≥70. RESULTS We evaluated 686 patients (<70 = 424; ≥70 = 262) who were margin and lymph node negative. Patients <70 were more likely to have longer operative time, oncoplastic closure, higher rates of IORT used as planned boost, and receive chemotherapy and post-operative WBRT. Wound complication rates were low and not significantly different between age groups. Median follow-up was 1.06 (range 0.51-1.9) years for < 70 and 1.01 (range 0.5-1.68) years for ≥ 70. There were 5 (0.73%) breast recurrences (4 in <70 and 1 ≥ 70, p = 0.65) and no axillary recurrences during follow-up. CONCLUSIONS IORT was associated with a low rate of wound complication and local recurrence on short-term follow-up in this cohort.
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Affiliation(s)
| | | | - L Loftus
- Moffitt Cancer Center, Tampa, USA
| | | | - J M Greif
- Alta Bates Summit Medical Center, Oakland, CA, USA
| | | | | | - C Lottich
- Community Physician Network Breast Care, Community Health Network, Indianapolis, IN, USA
| | - D L Ross
- Community Physician Network Breast Care, Community Health Network, Indianapolis, IN, USA
| | | | - C G Bedi
- Mercy Medical Center, Baltimore, MD, USA
| | - J E Joh
- Mercy Medical Center, Baltimore, MD, USA
| | - P Kelemen
- Ashikari Breast Center, Dobbs Ferry, NY, USA
| | - R A Hoefer
- The Sentara Dorothy G. Hoefer Comprehensive Breast Center, Newport News, VA, USA
| | - S K Kang
- The Sentara Dorothy G. Hoefer Comprehensive Breast Center, Newport News, VA, USA
| | - J Ruffer
- Advocate Good Shepherd Hospital, Barrington, IL, USA
| | - A Police
- University of California Irvine Medical Center, Irvine, CA, USA
| | - A Fyles
- Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - G M Graves
- Sutter Cancer Center, Sacramento, CA, USA
| | - S C Willey
- MedStar Georgetown University Hospital, Washington, DC, USA
| | - E A Tousimis
- MedStar Georgetown University Hospital, Washington, DC, USA
| | - W Small
- Loyola University, Maywood, IL, USA
| | - J Lyons
- The Cleveland Clinic, Cleveland, OH, USA
| | - S Grobmyer
- The Cleveland Clinic, Cleveland, OH, USA
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Wendtner CM, Byrd JC, Foà R, Greil R, Hillmen P, Jäger U, Jurczak W, Kelemen P, Laribi K, Munir T, Schetelig J, Staber PB, Stilgenbauer S, Woyach JA. COSMOS: MOR208 plus idelalisib or venetoclax in patients with relapsed or refractory (R/R) chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) previously treated with a Bruton's tyrosine kinase inhibitor (BTKi)—A two-cohort phase II study. J Clin Oncol 2017. [DOI: 10.1200/jco.2017.35.15_suppl.tps7567] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
TPS7567 Background: Patients (pts) with R/R CLL who discontinue treatment with the BTKi ibrutinib due to progression have a particularly dismal prognosis. A phase I study showed that the Fc-enhanced, humanized, CD19 antibody MOR208 was well tolerated with encouraging single-agent activity in pts with R/R CLL/SLL. In preclinical models, MOR208 showed synergy with idelalisib (an inhibitor of PI3K delta) and venetoclax (an inhibitor of BCL-2), both approved for the treatment of CLL. Methods: This two-cohort, phase II study will investigate MOR208 combined with idelalisib (cohort A) or venetoclax (cohort B) in pts with R/R CLL or R/R SLL and includes a safety run-in phase for each cohort, to be evaluated by an Independent Data Monitoring Committee. Key inclusion criteria: aged ≥18 years, R/R CLL/SLL while receiving a BTKi therapy or intolerance of such therapy, BTKi administered as a single-agent or in combination for at least 1 month as the most recent prior anticancer therapy, ECOG performance status of 0–2, and adequate organ function. Key exclusion criteria: transformed CLL/SLL or Richter’s syndrome, BTKi treatment within 5 days prior to study drug dosing, prior treatment with a CD19-targeted therapy, a PI3K inhibitor (cohort A) or a BCL-2 inhibitor (cohort B). Pts will be treated for a maximum of 24 (28-day) cycles or until disease progression. Treatment will be MOR208 12 mg/kg IV (weekly for the first 3 months, every second week for the next 3 months, and monthly thereafter) in combination with oral idelalisib 150 mg twice-daily or venetoclax administered on a weekly ramp-up dosing schedule to the recommended daily dose of 400 mg. Primary endpoint: overall response rate based on independent review; secondary and exploratory endpoints include: progression-free and overall survival, duration of response, safety, pharmacokinetics, MOR208 immunogenicity, quality of life and minimal residual disease negativity. 120 pts per cohort are planned. Clinical trial information: 2015-002915-14.
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Affiliation(s)
- Clemens-Martin Wendtner
- Klinikum Schwabing, Department I of Medicine, Academic Teaching Hospital of University of Munich, Munich, Germany
| | - John C. Byrd
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH
| | - Robin Foà
- Division of Hematology, "Sapienza" University of Rome, Rome, Italy
| | - Richard Greil
- Department of Internal Medicine III with Hematology, Medical Oncology, Hemostaseology, Infectious Diseases, Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - Peter Hillmen
- St James's University Hospital, Leeds, United Kingdom
| | - Ulrich Jäger
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Vienna General Hospital – Medical University of Vienna, Vienna, Austria
| | - Wojciech Jurczak
- Department of Hematology, Jagiellonian University, Kraków, Poland
| | | | - Kamel Laribi
- Department of Hematology, Centre Hospitalier du Mans, Le Mans, France
| | - Talha Munir
- St James's University Hospital, Leeds, United Kingdom
| | | | - Philipp B. Staber
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Vienna General Hospital – Medical University of Vienna, Vienna, Austria
| | | | - Jennifer Ann Woyach
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH
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Rempfert KR, Miller HM, Bompard N, Nothaft D, Matter JM, Kelemen P, Fierer N, Templeton AS. Geological and Geochemical Controls on Subsurface Microbial Life in the Samail Ophiolite, Oman. Front Microbiol 2017; 8:56. [PMID: 28223966 PMCID: PMC5293757 DOI: 10.3389/fmicb.2017.00056] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/09/2017] [Indexed: 02/06/2023] Open
Abstract
Microbial abundance and diversity in deep subsurface environments is dependent upon the availability of energy and carbon. However, supplies of oxidants and reductants capable of sustaining life within mafic and ultramafic continental aquifers undergoing low-temperature water-rock reaction are relatively unknown. We conducted an extensive analysis of the geochemistry and microbial communities recovered from fluids sampled from boreholes hosted in peridotite and gabbro in the Tayin block of the Samail Ophiolite in the Sultanate of Oman. The geochemical compositions of subsurface fluids in the ophiolite are highly variable, reflecting differences in host rock composition and the extent of fluid-rock interaction. Principal component analysis of fluid geochemistry and geologic context indicate the presence of at least four fluid types in the Samail Ophiolite (“gabbro,” “alkaline peridotite,” “hyperalkaline peridotite,” and “gabbro/peridotite contact”) that vary strongly in pH and the concentrations of H2, CH4, Ca2+, Mg2+, NO3-, SO42-, trace metals, and DIC. Geochemistry of fluids is strongly correlated with microbial community composition; similar microbial assemblages group according to fluid type. Hyperalkaline fluids exhibit low diversity and are dominated by taxa related to the Deinococcus-Thermus genus Meiothermus, candidate phyla OP1, and the family Thermodesulfovibrionaceae. Gabbro- and alkaline peridotite- aquifers harbor more diverse communities and contain abundant microbial taxa affiliated with Nitrospira, Nitrosospharaceae, OP3, Parvarcheota, and OP1 order Acetothermales. Wells that sit at the contact between gabbro and peridotite host microbial communities distinct from all other fluid types, with an enrichment in betaproteobacterial taxa. Together the taxonomic information and geochemical data suggest that several metabolisms may be operative in subsurface fluids, including methanogenesis, acetogenesis, and fermentation, as well as the oxidation of methane, hydrogen and small molecular weight organic acids utilizing nitrate and sulfate as electron acceptors. Dynamic nitrogen cycling may be especially prevalent in gabbro and alkaline peridotite fluids. These data suggest water-rock reaction, as controlled by lithology and hydrogeology, constrains the distribution of life in terrestrial ophiolites.
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Affiliation(s)
- Kaitlin R Rempfert
- Department of Geological Sciences, University of Colorado Boulder, CO, USA
| | - Hannah M Miller
- Department of Geological Sciences, University of Colorado Boulder, CO, USA
| | - Nicolas Bompard
- National Oceanography Centre, University of Southampton Southampton, UK
| | - Daniel Nothaft
- Department of Geological Sciences, University of Colorado Boulder, CO, USA
| | - Juerg M Matter
- National Oceanography Centre, University of Southampton Southampton, UK
| | - Peter Kelemen
- Lamont-Doherty Earth Observatory, Columbia University Palisades, NY, USA
| | - Noah Fierer
- Cooperate Institute for Research in Environmental Sciences, University of ColoradoBoulder, CO, USA; Department of Ecology and Evolutionary Biology, University of ColoradoBoulder, CO, USA
| | - Alexis S Templeton
- Department of Geological Sciences, University of Colorado Boulder, CO, USA
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Pukancsik D, Kelemen P, Újhelyi M, Kovács E, Udvarhelyi N, Mészáros N, Kenessey I, Kovács T, Kásler M, Mátrai Z. Objective decision making between conventional and oncoplastic breast-conserving surgery or mastectomy: An aesthetic and functional prospective cohort study. Eur J Surg Oncol 2016; 43:303-310. [PMID: 28069398 DOI: 10.1016/j.ejso.2016.11.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [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: 07/10/2016] [Revised: 10/12/2016] [Accepted: 11/01/2016] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Breast-conserving surgery (BCS) is considered the standard treatment for early-stage breast cancer. However, fair to poor cosmetic outcomes following conventional BCS have been observed in as many as one-third of cases. The aim of this study was to determine the critical tumor-to-breast volume ratio for each quadrant of the breast beyond which conventional BCS would no longer offer acceptable cosmetic and functional results or satisfactory quality of life for the patient. METHODS A prospective cohort study was performed between December 2011 and December 2013 involving 350 patients younger than 70 years with early-stage unifocal (T ≤ 30 mm) breast cancer who underwent wide excision and axillary sentinel lymph node biopsy followed by whole-breast irradiation. Using validated panels and software (the Breast Cancer Treatment Outcome Scale [BCTOS], EORTC Cancer Quality of Life Questionnaire number C30-BR23, and Breast Cancer Conservative Treatment - cosmetic results [BCCT.core] software), quality of life and aesthetic and functional parameters and their changes in correlation to the percentage of breast volume excised were statistically analyzed. RESULTS The maximum percentages of breast volume that were resectable by conventional BCS without resulting in unacceptable aesthetic and functional outcomes or decreased quality of life were 18-19% in the upper-outer quadrant (p < 0.0001), 14-15% in the lower-outer quadrant (p < 0.0001), 8-9% in the upper-inner quadrant (p < 0.0001), and 9-10% in the lower-inner quadrant (p < 0.0001). CONCLUSION Aided by the calculated cut-off values for each breast quadrant, breast surgeons might render more objective decisions regarding performing conventional BCS, using oncoplastic techniques or choosing mastectomy with immediate reconstruction.
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Affiliation(s)
- D Pukancsik
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György Str. 7-9, 1122 Budapest, Hungary.
| | - P Kelemen
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - M Újhelyi
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - E Kovács
- National Institute of Oncology, Department of Radiological Diagnostics, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - N Udvarhelyi
- National Institute of Oncology, Department of Surgical and Molecular Pathology, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - N Mészáros
- National Institute of Oncology, Department of Radiotherapy, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - I Kenessey
- National Institute of Oncology, National Cancer Registry, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - T Kovács
- Guy's and St Thomas' Hospitals NHS Foundation Trust, Department of Breast Surgery, Great Maze Pond, London SE1 9RT, United Kingdom
| | - M Kásler
- National Institute of Oncology, Ráth György Str. 7-9, 1122 Budapest, Hungary
| | - Z Mátrai
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György Str. 7-9, 1122 Budapest, Hungary
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Kelemen P, Pukancsik D, Ujhelyi M, Kovacs E, Udvarhelyi N, Kenessey I, Kasler M, Matrai Z. 72. Comparing oncoplastic breast surgery with conventional breast conserving therapies. Oncological, cosmetic and quality of life outcomes of 350 cases. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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18
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Ujhelyi M, Pukancsik D, Kelemen P, Kovács E, Kenessey I, Udvarhelyi N, Bak M, Kovács T, Mátrai Z. 44. Does breast screening offer a survival benefit? A retrospective comparative study of oncological outcomes of screen detected and symptomatic early stage breast cancer cases. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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19
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Újhelyi M, Pukancsik D, Kelemen P, Kovács E, Kenessey I, Udvarhelyi N, Bak M, Kovács T, Mátrai Z. Does breast screening offer a survival benefit? A retrospective comparative study of oncological outcomes of screen-detected and symptomatic early stage breast cancer cases. Eur J Surg Oncol 2016; 42:1814-1820. [PMID: 27424787 DOI: 10.1016/j.ejso.2016.06.403] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/19/2016] [Accepted: 06/23/2016] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION Mammography screening reduces breast cancer mortality by up to 32%. However, some recent studies have questioned the impact of non-palpable breast cancer detection on mortality reduction. The aim of this study was to analyse the clinicopathological and long-term follow-up data of early stage screened and symptomatic breast cancer patients. PATIENTS AND METHOD The institutional prospectively led database was systematically analysed for breast cancer cases diagnosed via the mammography screening program from 2002 to 2009. As a control group, symptomatic early stage breast cancer patients were collected randomly from the same database and matched for age and follow-up period. All medical records were reviewed retrospectively. RESULTS Data from 298 breast cancer patients were collected from 47,718 mammography screenings. In addition, 331 symptomatic breast cancer patients were randomly selected. The screened group presented a significantly lower median tumour size (P < 0.00001). The incidence of negative regional lymph nodes was significantly higher in the screened group (P < 0.0006). The incidence of chemotherapy was 17% higher in the symptomatic group (P = 4*10-5). At the median follow-up of 65 and 80 months, the screened group did not exhibit better overall (P = 0.717) or disease-free survival (P = 0.081) compared to the symptomatic group. CONCLUSION Our results do not suggest that mammography screening does not reduce breast cancer mortality but the mammography screening did not bring any significant improvement in patient overall or disease-free survival for the early stage breast cancer patients compared to the symptomatic group. The drawback of symptomatic early stage tumours compared to non-palpable tumours could be equalized by modern multimodality oncology treatments.
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Affiliation(s)
- M Újhelyi
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György str. 7-9, 1122 Budapest, Hungary.
| | - D Pukancsik
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György str. 7-9, 1122 Budapest, Hungary
| | - P Kelemen
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György str. 7-9, 1122 Budapest, Hungary
| | - E Kovács
- National Institute of Oncology, Department of Radiological Diagnostics, Ráth György str. 7-9, 1122 Budapest, Hungary
| | - I Kenessey
- National Institute of Oncology, National Cancer Registry, Ráth György str. 7-9, 1122 Budapest, Hungary
| | - N Udvarhelyi
- National Institute of Oncology, Surgical and Molecular Tumor Pathology Centre, Ráth György str. 7-9, 1122 Budapest, Hungary
| | - M Bak
- National Institute of Oncology, Department of Cytopathology, Ráth György str. 7-9, 1122 Budapest, Hungary
| | - T Kovács
- Guy's Hospital, Breast Unit, Great Maze Pond, London SE1 9RT, United Kingdom
| | - Z Mátrai
- National Institute of Oncology, Department of Breast and Sarcoma Surgery, Ráth György str. 7-9, 1122 Budapest, Hungary
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Wendtner CM, Byrd JC, Eichhorst B, Foà R, Hallek M, Hillmen P, Jäger U, Jurczak W, Kelemen P, Laribi K, Munir T, Staber PB, Stilgenbauer S, Woyach JA. A phase II study of MOR208 plus idelalisib in patients with relapsed or refractory chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) previously treated with a Bruton's tyrosine kinase inhibitor (MIRACLE). J Clin Oncol 2016. [DOI: 10.1200/jco.2016.34.15_suppl.tps7572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Clemens-Martin Wendtner
- Klinikum Schwabing, Department I of Medicine, Academic Teaching Hospital of University of Munich, Munich, Germany
| | - John C. Byrd
- The Ohio State University Comprehensive Cancer Center, Columbus, OH
| | | | - Robin Foà
- Sapienza University of Rome, Rome, Italy
| | - Michael Hallek
- Klinik I für Innere Medizin, Uniklinik Köln, Köln, Germany
| | - Peter Hillmen
- St. James's University Hospital, Leeds, United Kingdom
| | - Ulrich Jäger
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Vienna General Hospital – Medical University of Vienna, Vienna, Austria
| | | | | | - Kamel Laribi
- Department of Hematology, Centre Hospitalier Le Mans, Le Mans, France
| | - Talha Munir
- St James's University Hospital, Leeds, United Kingdom
| | - Philipp B Staber
- Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Vienna General Hospital – Medical University of Vienna, Vienna, Austria
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Gadikota G, Matter J, Kelemen P, Park AHA. Chemical and morphological changes during olivine carbonation for CO2 storage in the presence of NaCl and NaHCO3. Phys Chem Chem Phys 2014; 16:4679-93. [DOI: 10.1039/c3cp54903h] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gyökeres T, Pulgar S, Singh N, Passos VQ, Kelemen P. Effect of octreotide LAR on quality of life of 93 Hungarian patients with neuroendocrine tumors. J Clin Oncol 2012. [DOI: 10.1200/jco.2012.30.4_suppl.362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
362 Background: Studies have shown that health-related quality of life (HRQoL) of patients with neuroendocrine tumors (NET) is lower compared to the general population in the US and Norway. Secretory symptoms associated with functional NET (diarrhea/flushing) contribute to worsened HRQoL but may be controlled with the somatostatin analog octreotide long-acting repeatable (LAR). To date, there have been limited assessments of specific drug effects on HRQoL in patients with NET. The purpose of this study was to assess the effect of octreotide LAR treatment on HRQoL. Methods: 93 Hungarian patients with gastroenteropancreatic NET who were treated with octreotide LAR participated in a multicenter observational study from 2005 to 2007. At study entry and 4 quarterly follow-up visits, patients completed the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30) questionnaire. A mixed model was used to analyze the data and confirm significance. Results: 91 patients (mean age = 61 years) were evaluable for QoL assessments. Overall, patients reported improvements in diarrhea, global health status, emotional functioning, and financial difficulties but worsening in role functioning, pain, and insomnia. There were some differences in trends, depending on the tumor site, but diarrhea still improved in all patient categories. Women reported lower global health status compared to men, including more fatigue, nausea/vomiting, pain, dyspnea, and constipation. Elderly patients >70 years did not report any lessening of overall global health status scores compared to younger patients; older patients did experience less nausea/vomiting and pain but more constipation and diarrhea. In addition, patients diagnosed <2 years had slightly lower global health status than patients diagnosed >2 years earlier. Conclusions: Patients with NET who were treated with octreotide LAR had improvements in global health status and diarrhea. Interesting trends were noted in different patient populations, depending on tumor site, gender, or age. Additional analysis is planned to assess changes as measured by the GI NET disease-specific module of EORTC that was also applied to patients.
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Affiliation(s)
- Tibor Gyökeres
- MAV Hospital and Central Medical Clinic, Budapest, Hungary; Novartis Pharmaceuticals, Florham Park, NJ; Novartis Healthcare, Hyderabad, India; Novartis Pharmaceuticals, East Hanover, NJ; Novartis Oncology, Budapest, Hungary
| | - Sonia Pulgar
- MAV Hospital and Central Medical Clinic, Budapest, Hungary; Novartis Pharmaceuticals, Florham Park, NJ; Novartis Healthcare, Hyderabad, India; Novartis Pharmaceuticals, East Hanover, NJ; Novartis Oncology, Budapest, Hungary
| | - Neha Singh
- MAV Hospital and Central Medical Clinic, Budapest, Hungary; Novartis Pharmaceuticals, Florham Park, NJ; Novartis Healthcare, Hyderabad, India; Novartis Pharmaceuticals, East Hanover, NJ; Novartis Oncology, Budapest, Hungary
| | - Vanessa Q. Passos
- MAV Hospital and Central Medical Clinic, Budapest, Hungary; Novartis Pharmaceuticals, Florham Park, NJ; Novartis Healthcare, Hyderabad, India; Novartis Pharmaceuticals, East Hanover, NJ; Novartis Oncology, Budapest, Hungary
| | - Peter Kelemen
- MAV Hospital and Central Medical Clinic, Budapest, Hungary; Novartis Pharmaceuticals, Florham Park, NJ; Novartis Healthcare, Hyderabad, India; Novartis Pharmaceuticals, East Hanover, NJ; Novartis Oncology, Budapest, Hungary
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Kölsch H, Lütjohann D, Jessen F, Popp J, Hentschel F, Kelemen P, Friedrichs S, Maier TAW, Heun R. RXRA gene variations influence Alzheimer's disease risk and cholesterol metabolism. J Cell Mol Med 2009; 13:589-98. [PMID: 19374686 PMCID: PMC3822518 DOI: 10.1111/j.1582-4934.2009.00383.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [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] [Indexed: 01/15/2023] Open
Abstract
Cholesterol metabolism is altered in Alzheimer's disease (AD). The nuclear hormone receptor Retinoic X Receptor a (RXRa) is a member of the nuclear ligand-activated transcription factor family. RXRs are key regulators of cholesterol synthesis and thus cholesterol metabolism. We performed a systematic screen for gene variants in the RXRA gene. The effect of these gene variants on the risk of AD was investigated in 405 AD patients (mean age: 74.27 +/- 9.37 years; female 78.6%) and 347 controls (mean age: 73.26 +/- 8.37 years; female 57.2%). Furthermore, the influence of RXRA gene variants on CSF and plasma levels of cholesterol, lathosterol and 24S-hydroxycholesterol were evaluated. One of the identified seven SNPs in RXRA influenced AD risk in our single marker analysis (rs3132293: P= 0.006). Haplotype analysis identified a three-marker haplotype (TGC) consisting of rs3118570, rs1536475 and rs3132293, which decreased the risk of AD (P= 0.009). The single marker rs3132293 (P= 0.026) and the TGC haplotype (P= 0.026) influenced CSF lathosterol levels in non-demented controls, and cholesterol levels in the combined sample comprising AD patients and controls (Rs3132293: P= 0.050; TGC haplotype: P= 0.035). 24S-Hydroxycholesterol CSF and plasma levels were also influenced by rs3132293 (CSF: P= 0.004; plasma: P= 0.001) and the TGC haplotype (CSF: P= 0.004; plasma: P= 0.002); this effect was most pronounced in AD patients (rs3132293: CSF: P= 0.009, plasma: P= 0.002; TGC haplotype: CSF: P= 0.019, plasma: P= 0.005). Our results suggest that RXRA gene variants might act as risk factor for AD via an influence on cerebral cholesterol metabolism.
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Affiliation(s)
- Heike Kölsch
- Department of Psychiatry, University of Bonn, Bonn, Germany.
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Qureischie H, Heun R, Popp J, Jessen F, Maier W, Schmitz S, Hentschel F, Kelemen P, Kölsch H. Association of CETP polymorphisms with the risk of vascular dementia and white matter lesions. J Neural Transm (Vienna) 2009; 116:467-72. [PMID: 19184337 DOI: 10.1007/s00702-008-0180-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Accepted: 12/19/2008] [Indexed: 11/29/2022]
Abstract
Cholesteryl ester transfer protein (CETP), a component of the high density lipoprotein (HDL), plays a central role in reverse cholesterol transport. We investigated the association of two putative functional CETP polymorphisms (C-629A and I405V) with the risk of vascular dementia (VD) and tested if this association is influenced by the presence of APOE4 allele. Our study included 163 VD patients (mean age: 74.25 +/- 7.9 years) and 452 cognitively healthy probands (mean age: 70.81 +/- 7.9 years). As a biological correlate, the association of CETP gene variants with white matter lesion (WML) load was investigated. Neither the C-629A (P = 0.169) nor the I405V (P = 0.840) polymorphism was associated with VD risk in the whole sample. However, in non-carriers of the APOE4 allele, homozygote carriers of the CETP C-629A A allele presented with an increased risk of VD (P = 0.01). Whereas in APOE4 carriers, no association of CETP polymorphisms with VD risk was detected. In addition, carriers of the CETP C-629A AA genotype presented with decreased WML load in the frontal brain (P = 0.009). Our results suggest that CETP gene polymorphisms might influence WML load and the risk of VD, the latter in non-carriers of the APOE4 allele.
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Affiliation(s)
- H Qureischie
- Department of Psychiatry, University of Bonn, Sigmund-Freud-Strasse 25, 53105, Bonn, Germany
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Hong GS, Heun R, Jessen F, Popp J, Hentschel F, Kelemen P, Schulz A, Maier W, Kölsch H. Gene variations in GSTM3 are a risk factor for Alzheimer's disease. Neurobiol Aging 2007; 30:691-6. [PMID: 17904251 DOI: 10.1016/j.neurobiolaging.2007.08.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [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: 04/10/2007] [Revised: 07/18/2007] [Accepted: 08/20/2007] [Indexed: 11/26/2022]
Abstract
Oxidative stress is a relevant pathomechanism in Alzheimer's disease (AD) and gene variations in the glutathione S-transferase M3 gene (GSTM3), involved in the detoxification of oxygen radicals, might influence the risk of AD. We investigated the effect of three polymorphisms in GSTM3: rs1332018 (C/A); rs1799735 (del/AGG); rs7483 (G/A), on the risk of AD in 363 AD patients and 358 healthy controls. Single marker association analyses revealed that the AGG/AGG genotype of the GSTM3 rs1799735 (del/AGG) polymorphism was associated with an increased risk of AD (p=0.05), especially in the group of APOE4-allele non-carriers (p=0.004; OR=2.07). Examination of the haplotypes identified a two-marker haplotype (C/AGG) consisting of rs1332018 (C/A) and rs1799735 (del/AGG) to increase the risk of AD (p=0.029), this effect was also most prevalent in APOE4-allele non-carriers (p=0.009; OR=1.95). The population attributable risk of this haplotype in APOE4-allele non-carriers was 32.2%. Our results suggest that there is a group of AD patients in which variations in metabolism of oxidative stress play an important role.
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Affiliation(s)
- G-S Hong
- Department of Psychiatry, University of Bonn, Sigmund-Freud-Strasse 25, 53105 Bonn, Germany
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Kelemen P, Kölsch H, Heun R, Seitz R, Krumm B, Frölich L, Hentschel F. The influence of genetic polymorphisms on white matter lesion load in dementia. Eur Psychiatry 2007. [DOI: 10.1016/j.eurpsy.2007.01.1021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Kelemen P, Damian M, Seitz R, Frölich L, Hentschel F. White matter lesion (WML) load and clock drawing test (CDT): a comparison of two diagnostic tools in dementias. Eur Psychiatry 2007. [DOI: 10.1016/j.eurpsy.2007.01.1022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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28
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Kelemen P, Kölsch H, Seitz R, Krumm B, Frölich L, Hentschel F. The influence of genetics on white matter lesion load in patients with vascular subcortical dementia compared to patients with Alzheimer disease and persons without cognitive impairment. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977358] [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: 10/21/2022]
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Seitz R, Kelemen P, Krumm B, Frölich L, Hentschel F. Visuelle Abschätzung und digitale Quantifizierung der Hippocampus-Atrophie – Vergleich zweier Methoden in koronarer und transversal angulierter Schichtorientierung der strukturellen MRT bei Demenzen. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977367] [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: 10/21/2022]
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Loewen M, Ashikari A, Kelemen P, Salzberg A, Savino J, Ashikari R. Cowden Syndrome as an indication for bilateral prophyllactic mastectomy: A series of two cases. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.10761] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10761 Background: Multiple hamartoma syndrome, or Cowden Syndrome, is an autosomal dominant disorder which predisposes toward neoplasms in the thyroid, colon, and breast. Chemoprevention in women with a genetic predisposition toward breast cancer has not yet been shown to be beneficial in prospective data. Bilateral prophylactic mastectomy (BMP) has emerged as a viable option for women with suspected genetic predispositions toward breast cancer, with an estimated risk reduction of around 90 percent. Our search of the literature has not detected any case series of BMP in the Cowden Syndrome patients. Methods: We present two women presenting with historical and physical evidence for this Cowden Syndrome with desire to undergoing PBM. Results: Both women successfully underwent subcutaneous bilateral mastectomy with immediate reconstruction. (See table ) They are both alive without evidence of breast cancer to date. Conclusions: Cowden Syndrome can be added to other genetic syndromes with clear predispositions toward breast cancer, and presents an option for prophylactic bilateral mastectomy in women who desire a risk reduction for breast cancer. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- M. Loewen
- New York Medical College, Lake Peekskill, NY; New York Medical College, Valhalla, NY
| | - A. Ashikari
- New York Medical College, Lake Peekskill, NY; New York Medical College, Valhalla, NY
| | - P. Kelemen
- New York Medical College, Lake Peekskill, NY; New York Medical College, Valhalla, NY
| | - A. Salzberg
- New York Medical College, Lake Peekskill, NY; New York Medical College, Valhalla, NY
| | - J. Savino
- New York Medical College, Lake Peekskill, NY; New York Medical College, Valhalla, NY
| | - R. Ashikari
- New York Medical College, Lake Peekskill, NY; New York Medical College, Valhalla, NY
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Kelemen P. [Plastic and Reconstructive Surgery of the Breast. Third European Conference, Milan, 14-17 December 2005]. Magy Seb 2006; 59:140. [PMID: 16878384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
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Jósvay J, Sashegyi M, Kelemen P, Donáth A. Modified tensor fascia lata musculofasciocutaneous flap for the coverage of trochanteric pressure sores. J Plast Reconstr Aesthet Surg 2006; 59:137-41. [PMID: 16703857 DOI: 10.1016/j.bjps.2005.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [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: 11/23/2022]
Abstract
The method most frequently used for the coverage of trochanteric pressure sores is the tensor fascia lata (TFL) flap. The authors introduce a new, hatchet-shaped incision strategy for the TFL flap, which preserves the safe blood supply of the flap and keeps the flap mobile enough. The part of the flap including the muscle is adapted to the greater trochanter. This provides a good aesthetic result without dog-ear formation at the rotation point of the flap. The donor site is closed in a V-Y fashion, and the closure does not require any skin grafting or designing a local flap. The TFL hatchet flap was used nine times on eight patients to cover trochanteric pressure sores. With one exception all patients healed. No recurrence was observed during the follow-up period, and no contour difference developed on the lateral aspect of the thigh.
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Affiliation(s)
- J Jósvay
- Department of Plastic Surgery, St Imre Hospital of Budapest Metropolitan Autonomy, Tétényi út 12-16, 1115-H Budapest, Hungary.
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Kelemen P, Seitz R, Frölich L, Hentschel F. Beitrag und Stabilität der erweiterten klinischen Diagnostik der Demenzen mit MRT. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941134] [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: 10/20/2022]
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34
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Seitz R, Kelemen P, Krumm B, Frölich L, Hentschel F. Quantifizierung der Atrophie des Hippocampus in koronaren und transversalen, speziell angulierten Schichten der strukturellen MRT bei Demenzen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941136] [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: 10/20/2022]
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Custers JPA, Kelemen P, van den Broeke LJP, Cohen Stuart MA, Keurentjes JTF. Reversible Binding of Multivalent Ions by Surfactant Self-Assembly. J Am Chem Soc 2005; 127:1594-5. [PMID: 15700966 DOI: 10.1021/ja0432362] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
High molecular weight nonionic surfactants have been chemically modified to bind multivalent ions reversibly by using a moderate temperature stimulus as an on/off mechanism. Only above the critical micellization temperature (CMT) does binding of multivalent ions take place, whereas below the CMT, no binding occurs to the free surfactant molecules. Different calorimetric techniques have been used to prove the reversible binding of multivalent ions. This tunable binding of multivalent metal ions allows for the improvement of many ion-exchange processes and offers attractive opportunities in the biomedical field.
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Affiliation(s)
- Johan P A Custers
- Process Development Group, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
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Kelemen P, Klumperman B. Determination of the Free Radical Concentration Ratio in the Copolymerization of Methyl Acrylate and Styrene. Application of Radical Trapping and 15N NMR Spectroscopy. Macromolecules 2004. [DOI: 10.1021/ma048883s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Kelemen
- Laboratory of Polymer Chemistry, Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bert Klumperman
- Laboratory of Polymer Chemistry, Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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Säemann MD, Kelemen P, Böhmig GA, Hörl WH, Zlabinger GJ. Hyporesponsiveness in alloreactive T-cells by NF-kappaB inhibitor-treated dendritic cells: resistance to calcineurin inhibition. Am J Transplant 2004; 4:1448-58. [PMID: 15307832 DOI: 10.1111/j.1600-6143.2004.00547.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 01/25/2023]
Abstract
Dendritic cells (DC) are the most potent antigen-presenting cells (APC) initiating primary T-cell responses. Beyond this immunostimulatory function, certain DC subsets have been shown to induce T-cell tolerance in vitro and in vivo. In this study, immature monocyte-derived DC were activated in the presence of the NF-kappaB inhibitor pyrrolidine dithiocarbamate (PDTC) and characterized with regard to phenotype, cytokine production and allostimulatory potential. Furthermore, the functional consequences of calcineurin inhibition were studied in T cells exposed to PDTC-modulated DC. We demonstrate that PDTC treatment of DC leads to an arrest in maturation as reflected by down-regulated major histocompatibility complex (MHC) antigens and costimulatory molecules, suppressed immunostimulatory cytokines and an impaired capability to support allogeneic T-cell activation. Allogeneic T cells challenged with PDTC-treated DC are refractory upon restimulation with alloantigens but not to polyclonal stimuli. Interestingly, the successful establishment of alloantigenic hyporesponsiveness is not prevented by concomitant calcineurin inhibition in vitro as well as in T cells from patients under cyclosporine A (CsA)-based immunosuppression ex vivo. These data may have important implications for the design of clinical regimens for the establishment of antidonor hyporeactivity in organ transplantation using in vitro-modulated DC.
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Affiliation(s)
- Marcus D Säemann
- Institute of Immunology, University of Vienna Medical School, Borschkegasse 8a, A-1090 Vienna, Austria
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Säemann MD, Diakos C, Kelemen P, Kriehuber E, Zeyda M, Böhmig GA, Hörl WH, Baumruker T, Zlabinger GJ. Prevention of CD40-triggered dendritic cell maturation and induction of T-cell hyporeactivity by targeting of Janus kinase 3. Am J Transplant 2003; 3:1341-9. [PMID: 14525593 DOI: 10.1046/j.1600-6143.2003.00225.x] [Citation(s) in RCA: 28] [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] [Indexed: 01/25/2023]
Abstract
Pharmacological targeting of Janus kinase 3 (JAK3) has been employed successfully to control allograft rejection and graft-vs.-host disease (GVHD). Recent evidence suggests that in addition to its involvement in common-gamma chain (cgamma) signaling of cytokine receptors, JAK3 is also engaged in the CD40 signaling pathway of peripheral blood monocytes. In this study, we assessed the consequences of JAK3 inhibition during CD40-induced maturation of myeloid dendritic cells (DCs), and tested the impact thereof on the induction of T-cell alloreactivity. Dendritic cells triggering through CD40 induced JAK3 activity, the expression of costimulatory molecules, production of IL-12, and potent allogeneic stimulatory capacity. In contrast, JAK3 inhibition with the rationally designed JAK3 inhibitor WHI-P-154 prevented these effects arresting the DCs at an immature level. Interestingly, DCs exposed to the JAK3-inhibitor during CD40-ligation induced a state of hyporeactivity in alloreactive T cells that was reversible upon exogenous IL-2 supplementation to secondary cultures. These results suggest that immunosuppressive therapies targeting the tyrosine kinase JAK3 may also affect the function of myeloid cells. This property of JAK3 inhibitors therefore represents a further level of interference, which together with the well-established suppression of cgamma signaling could be responsible for their clinical efficacy.
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Kelemen P, Lugtenburg J, Klumperman B. 15N NMR spectroscopy of labeled alkoxyamines. 15N-labeled model compounds for nitroxide-trapping studies in free-radical (Co)polymerization. J Org Chem 2003; 68:7322-8. [PMID: 12968882 DOI: 10.1021/jo034667q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Eight (15)N-labeled derivatives of 1-ethoxy-2,2,6,6-tetramethylpiperidine were synthesized in order to investigate the effects of their structural units on (15)N NMR spectra. A single peak is found for each alkoxyamine. The chemical shift depends extensively on the nature of the alpha carbon atom of the alkoxy group. The remote functional group attached to position 4 of the piperidine ring has a smaller but still significant effect. The results of the (15)N NMR measurements are supported by the detection of the N-H and N-C spin-spin coupling from the (1)H and (13)C NMR. The investigated alkoxyamines are model compounds for the radical-trapping products of styryl, methyl methacryloyl, alpha-methylstyryl, and methyl acryloyl radicals by (15)N-labeled nitroxides. The potential of (15)N NMR spectroscopy to analyze such products is discussed. In addition, it is shown that the (13)C chemical shifts of the alpha carbon atom of the alkoxy group fall in an empty part of the (13)C NMR spectrum, which allows the identification of trapped (macro)radicals via natural abundance (13)C NMR.
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Affiliation(s)
- Peter Kelemen
- Laboratory of Polymer Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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40
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Säemann MD, Zeyda M, Diakos C, Szekeres A, Böhmig GA, Kelemen P, Parolini O, Stockinger H, Prieschl EE, Stulnig TM, Baumruker T, Zlabinger GJ. Suppression of early T-cell-receptor-triggered cellular activation by the Janus kinase 3 inhibitor WHI-P-154. Transplantation 2003; 75:1864-72. [PMID: 12811247 DOI: 10.1097/01.tp.0000065738.58742.a9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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: 11/25/2022]
Abstract
BACKGROUND Therapeutic targeting of Janus kinase 3 (JAK3) has received particular attention, because it is associated with the common gamma signaling of cytokine receptors and thus vitally influences T-cell growth and survival. Recent evidence, however, indicates a critical role for JAK3 in signaling linked to the T-cell antigen receptor. METHODS In this study we investigated whether targeting JAK3 with a rationally designed inhibitor affects early T-cell activation events. T cells were stimulated by CD3 and CD28 cross-linking, and interleukin (IL)-2 production, activation marker expression, increase of free intracellular Ca2+ concentration, activation of the extracellular-related kinase, and nuclear translocation of transcription factors were evaluated. RESULTS We found that JAK3 inhibitor treatment dramatically impaired T-cell-receptor (TCR)-induced IL-2 production, surface activation marker expression (CD69, CD154), and homotypic T-cell aggregation. Accordingly, mRNA production of IL-2, interferon-gamma, and IL-10 was profoundly inhibited. Molecular analysis revealed that TCR-triggered phosphorylation of phospholipase C-gamma1, increase in cytoplasmic Ca2+ concentration, and activation of extracellular-related kinase were markedly reduced by the JAK3 inhibitor, resulting in substantially decreased DNA binding of nuclear factor of activated T cells and alkaline phosphatase-1 and subsequent IL-2 promoter activation. Remarkably, on TCR-independent stimulation, IL-2 production, CD69 expression, and blast formation were completely insensitive to JAK3 inhibitor treatment. CONCLUSION These data indicate that pharmacologic targeting of JAK3 uncouples early TCR-triggered signaling from essential downstream events, which may have important implications for the use of such compounds in T-cell-mediated disorders such as allograft rejection or graft-versus-host disease.
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Himly M, Jahn-Schmid B, Dedic A, Kelemen P, Wopfner N, Altmann F, van Ree R, Briza P, Richter K, Ebner C, Ferreira F. Art v 1, the major allergen of mugwort pollen, is a modular glycoprotein with a defensin-like and a hydroxyproline-rich domain. FASEB J 2003; 17:106-8. [PMID: 12475905 DOI: 10.1096/fj.02-0472fje] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [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: 11/11/2022]
Abstract
In late summer, pollen grains originating from Compositae weeds (e.g., mugwort, ragweed) are a major source of allergens worldwide. Here, we report the isolation of a cDNA clone coding for Art v 1, the major allergen of mugwort pollen. Sequence analysis showed that Art v 1 is a secreted allergen with an N-terminal cysteine-rich domain homologous to plant defensins and a C-terminal proline-rich region containing several (Ser/Ala)(Pro)2-4 repeats. Structural analysis showed that some of the proline residues in the C-terminal domain of Art v 1 are posttranslationally modified by hydroxylation and O-glycosylation. The O-glycans are composed of 3 galactoses and 9-16 arabinoses linked to a hydroxyproline and represent a new type of plant O-glycan. A 3-D structural model of Art v 1 was generated showing a characteristic "head and tail" structure. Evaluation of the antibody binding properties of natural and recombinant Art v 1 produced in Escherichia coli revealed the involvement of the defensin fold and posttranslational modifications in the formation of epitopes recognized by IgE antibodies from allergic patients. However, posttranslational modifications did not influence T-cell recognition. Thus, recombinant nonglycosylated Art v 1 is a good starting template for engineering hypoallergenic vaccines for weed-pollen therapy.
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Affiliation(s)
- Martin Himly
- Institute of Genetics and General Biology, University of Salzburg, A-5020 Salzburg, Austria
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Jahn-Schmid B, Kelemen P, Himly M, Bohle B, Fischer G, Ferreira F, Ebner C. The T cell response to Art v 1, the major mugwort pollen allergen, is dominated by one epitope. J Immunol 2002; 169:6005-11. [PMID: 12421987 DOI: 10.4049/jimmunol.169.10.6005] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Mugwort (Artemisia vulgaris) pollen allergens represent the main cause of pollinosis in late summer in Europe. At least 95% of sera from mugwort pollen-allergic patients contain IgE against a highly glycosylated 24- to 28-kDa glycoprotein. Recently, this major allergen, termed Art v 1, was characterized, cloned in Escherichia coli, and produced in recombinant form. In the present study we characterized and compared the T cell responses to natural (nArt v 1) and recombinant Art v 1 (rArt v 1). In vitro T cell responses to nArt v 1 and rArt v 1 were studied in PBMC, T cell lines (TCL), and T cell clones (TCC) established from PBMC of mugwort-allergic patients. Stimulation of PBMC or allergen-specific TCL with either nArt v 1 or rArt v 1 resulted in comparable proliferative T cell responses. Eighty-five percent of the TCC reactive with rArt v 1 cross-reacted with the natural protein. The majority of the CD4(+)CD8(-)TCR alphabeta(+) Art v 1-specific TCC, obtained from 10 different donors, belonged to the Th2 phenotype. Epitope mapping of TCL and TCC using overlapping peptides revealed a single immunodominant T cell epitope recognized by 81% of the patients. Inhibition experiments demonstrated that the presentation of this peptide is restricted by HLA-DR molecules. In conclusion, the T cell response to Art v 1 is characterized by one strong immunodominant epitope and evidently differs from the T cell responses to other common pollen allergens known to contain multiple T cell epitopes. Therefore, mugwort allergy may be an ideal candidate for a peptide-based immunotherapy approach.
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MESH Headings
- Allergens/analysis
- Allergens/immunology
- Allergens/metabolism
- Antigen-Antibody Reactions
- Antigens, Plant
- Artemisia/immunology
- Cell Line
- Clone Cells
- Epitopes, T-Lymphocyte/analysis
- Epitopes, T-Lymphocyte/immunology
- Epitopes, T-Lymphocyte/metabolism
- Gene Rearrangement, beta-Chain T-Cell Antigen Receptor
- HLA-DQ Antigens/analysis
- HLA-DR Antigens/analysis
- Histocompatibility Testing
- Humans
- Immunoblotting
- Immunodominant Epitopes/analysis
- Immunodominant Epitopes/immunology
- Immunodominant Epitopes/metabolism
- Immunoglobulin E/blood
- Leukocytes, Mononuclear/chemistry
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/metabolism
- Lymphocyte Activation/immunology
- Plant Proteins/analysis
- Plant Proteins/immunology
- Plant Proteins/metabolism
- Pollen/immunology
- Receptors, Antigen, T-Cell, alpha-beta/analysis
- Receptors, Antigen, T-Cell, alpha-beta/biosynthesis
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Recombinant Proteins/immunology
- Recombinant Proteins/metabolism
- T-Lymphocytes/chemistry
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
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Affiliation(s)
- Beatrice Jahn-Schmid
- Department of Pathophysiology, Division of Immunopathology, University of Vienna, AKH-3Q, Waehringer Guertel 18-20, A-1090 Vienna, Austria
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Säemann MD, Kelemen P, Zeyda M, Böhmig G, Staffler G, Zlabinger GJ. CD40 triggered human monocyte-derived dendritic cells convert to tolerogenic dendritic cells when JAK3 activity is inhibited. Transplant Proc 2002; 34:1407-8. [PMID: 12176418 DOI: 10.1016/s0041-1345(02)02907-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M D Säemann
- Institute of Immunology, Department of Internal Medicine III, University of Vienna, Borschkegasse 8A, 1080 Vienna, Austria
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Säemann MD, Parolini O, Böhmig GA, Kelemen P, Krieger PM, Neumüller J, Knarr K, Kammlander W, Hörl WH, Diakos C, Stuhlmeier K, Zlabinger GJ. Bacterial metabolite interference with maturation of human monocyte-derived dendritic cells. J Leukoc Biol 2002; 71:238-46. [PMID: 11818444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Dendritic cells (DC), the most potent APC, are central to antimicrobial immunity. Because of evolutionary pressure, it is reasonable that pathogens have evolved strategies to also subvert this host-defense mechanism. In the present study, we describe a novel way of bacterial interference with DC maturation. The bacterial metabolite n-butyrate, which occurs physiologically in high concentrations in the gastrointestinal tract and has well-known anti-inflammatory effects, is able to prevent LPS-induced maturation of DC resulting in a reduced capability to stimulate T cells. In particular, n-butyrate prevents homotypic DC clustering, inhibits IL-12 while sparing IL-10 production, and at the molecular level, blocks NF-kappa B translocation. These results demonstrate efficient targeting of DC function by a bacterial metabolite, which might explain the particular type of immune responsiveness in the presence of this bacterial agent as exemplified in the gastrointestinal tract.
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Säemann MD, Parolini O, Böhmig GA, Kelemen P, Krieger P, Neumüller J, Knarr K, Kammlander W, Hörl WH, Diakos C, Stuhlmeier K, Zlabinger GJ. Bacterial metabolite interference with maturation of human monocyte‐derived dendritic cells. J Leukoc Biol 2002. [DOI: 10.1189/jlb.71.2.238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
| | | | | | | | | | - Josef Neumüller
- Institute of Histology, University of Vienna, Austria; and Austria
| | | | | | | | | | - Karl Stuhlmeier
- Ludwig Boltzmann Institute for Rheumatology, Vienna, Austria
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46
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Fábián TK, Handa T, Szabó M, Kelemen P, Kaan B, Fábian G. [The Hungarian translation of the "Dental Fear Survey" based on the Hungarian population]. Fogorv Sz 1999; 92:307-15. [PMID: 10575818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Authors translated the "Dental Fear Survey" (DFS) into Hungarian. 196 persons have been investigated and the DFS values have been compared to DAS, STAI-S, STAI-T values. Mean values were: DFS: 46.27; DAS: 12.24; STAI-S: 41.58; STAI-T: 42.68. Authors found all values higher in the case of women comparing to men. Positive correlation has been found between DAS and DFS, but STAI-S and STAI-T increased only moderately comparing to the DAS and DFS values.
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Affiliation(s)
- T K Fábián
- Gyermekfogászati és Fogszabályozási Klinika, Semmelweis Orvostudományi Egyetem
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Bilchik AJ, Giuliano A, Essner R, Bostick P, Kelemen P, Foshag LJ, Sostrin S, Turner RR, Morton DL. Universal application of intraoperative lymphatic mapping and sentinel lymphadenectomy in solid neoplasms. Cancer J Sci Am 1998; 4:351-8. [PMID: 9853133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
PURPOSE Regional lymph node involvement is the most important prognostic indicator in patients with solid tumors. Conventional lymph node dissection has not been shown to affect survival and is often associated with considerable morbidity. Intraoperative lymphatic mapping and sentinel lymph node dissection were therefore designed as a minimally invasive alternative to routine elective lymph node dissection in patients with primary cutaneous melanoma. This study examined whether introperative lymphatic mapping and sentinel lymph node dissection were accurate in staging patients with other solid malignancies. PATIENTS AND METHODS Between 1985 and 1998, 107 patients with breast cancer, 17 with thyroid tumors, 14 with gastrointestinal/gynecologic cancers, six with Merkel cell cancers, and five with squamous cell carcinomas of the head and neck have undergone mapping and sentinel lymph node dissection at the John Wayne Cancer Institute. RESULTS The sentinel node was identified in 96% of patients (98% melanoma). In 36% of patients the sentinel node was the only tumor-positive node (71% melanoma). Eighteen percent of sentinel nodes were negative by hematoxylin and eosin staining but were positive by immunohistochemical staining (15% melanoma). CONCLUSION These data suggest that many solid neoplasms have a primary lymphatic channel and lymph node to which it drains. Although sentinel lymph node dissection has been popularized in melanoma therapy, we have found it feasible for treatment of other solid malignancies. This technique may ultimately replace conventional dissection with more accurate staging.
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Affiliation(s)
- A J Bilchik
- Laboratories of the John Wayne Cancer Institute, Saint John's Health Center, Santa Monica, California
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Fábián TK, Kelemen P, Fábián G. [Introduction of the concept of Dental Anxiety Scale in Hungary. Epidemiologic studies on the Hungarian population]. Fogorv Sz 1998; 91:43-52. [PMID: 9497611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Authors translated the Corah's "Dental Anxiety Scale" (DAS) into Hungarian. 143 dental patients, and 74 dental student's, were investigated and the DAS values were compared to the State-Trait Anxiety Invertory (STAI-S and STAI-T) values. Mean values were: DAS: 9.92, STAI-S: 39.17, STAI-T: 41.34. Authors found lower scores in the case of dental students comparing to patients (p < 0.001), and women comparing to men (p < 0.001). DAS values increased slowly with age, and decreased at 60 years old, or older patients. Married patients had higher DAS and STAI-S scores, but lower STAI-T scores comparing to the unmarried and divorced patients.
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Affiliation(s)
- T K Fábián
- Semmelweis Orvostudományi Egyetem, Orálbiológiai Tanszék
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Aharonov E, Spiegelman M, Kelemen P. Three-dimensional flow and reaction in porous media: Implications for the Earth's mantle and sedimentary basins. ACTA ACUST UNITED AC 1997. [DOI: 10.1029/97jb00996] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.1] [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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Kelemen P, Vértes G. [The use of hypnosis in stomatology]. Fogorv Sz 1997; 90:107-10. [PMID: 9162631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
It follows from the fore going that hypnosis itself can not cure, but it is a great possibility to use it as a supplementary method and a curing means in our practice. The treatment is applicable for stomatological interventions, and somatic diseases of psychic origin which have connections on our field. Thus hypnosis can effect out therapeutic-work very favourable.
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Affiliation(s)
- P Kelemen
- A Magyar Hipnózis Egyesület, Fogorvosi Munkacsoport, Budapest
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