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Schollmeier MS, Bekx JJ, Hartmann J, Schork E, Speicher M, Brodersen AF, Fazzini A, Fischer P, Gaul E, Gonzalez-Izquierdo B, Günther MM, Härle AK, Hollinger R, Kenney K, Park J, Rivas DE, Scutelnic V, Shpilman Z, Wang S, Rocca JJ, Korn G. Differentiating multi-MeV, multi-ion spectra with CR-39 solid-state nuclear track detectors. Sci Rep 2023; 13:18155. [PMID: 37875514 PMCID: PMC10598230 DOI: 10.1038/s41598-023-45208-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 10/17/2023] [Indexed: 10/26/2023] Open
Abstract
The development of high intensity petawatt lasers has created new possibilities for ion acceleration and nuclear fusion using solid targets. In such laser-matter interaction, multiple ion species are accelerated with broad spectra up to hundreds of MeV. To measure ion yields and for species identification, CR-39 solid-state nuclear track detectors are frequently used. However, these detectors are limited in their applicability for multi-ion spectra differentiation as standard image recognition algorithms can lead to a misinterpretation of data, there is no unique relation between track diameter and particle energy, and there are overlapping pit diameter relationships for multiple particle species. In this report, we address these issues by first developing an algorithm to overcome user bias during image processing. Second, we use calibration of the detector response for protons, carbon and helium ions (alpha particles) from 0.1 to above 10 MeV and measurements of statistical energy loss fluctuations in a forward-fitting procedure utilizing multiple, differently filtered CR-39, altogether enabling high-sensitivity, multi-species particle spectroscopy. To validate this capability, we show that inferred CR-39 spectra match Thomson parabola ion spectrometer data from the same experiment. Filtered CR-39 spectrometers were used to detect, within a background of ~ 2 × 1011 sr-1 J-1 protons and carbons, (1.3 ± 0.7) × 108 sr-1 J-1 alpha particles from laser-driven proton-boron fusion reactions.
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Affiliation(s)
- M S Schollmeier
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany.
| | - J J Bekx
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - J Hartmann
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - E Schork
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - M Speicher
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - A F Brodersen
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - A Fazzini
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - P Fischer
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - E Gaul
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | | | - M M Günther
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - A K Härle
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - R Hollinger
- Electrical and Computer Engineering Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - K Kenney
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - J Park
- Electrical and Computer Engineering Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - D E Rivas
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - V Scutelnic
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
| | - Z Shpilman
- Electrical and Computer Engineering Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - S Wang
- Electrical and Computer Engineering Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - J J Rocca
- Electrical and Computer Engineering Department, Colorado State University, Fort Collins, CO, 80523, USA
- Physics Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - G Korn
- Marvel Fusion GmbH, Theresienhöhe 12, 80339, Munich, Germany
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2
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Lindner FH, Fitzpatrick EG, Haffa D, Ponnath L, Schmidt AK, Speicher M, Zielbauer B, Schreiber J, Thirolf PG. Charge-state resolved laser acceleration of gold ions to beyond 7 MeV/u. Sci Rep 2022; 12:4784. [PMID: 35315434 PMCID: PMC8938412 DOI: 10.1038/s41598-022-08556-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 03/08/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractIn the past years, the interest in the laser-driven acceleration of heavy ions in the mass range of $$\text {A}\approx 200$$
A
≈
200
has been increasing due to promising application ideas like the fission-fusion nuclear reaction mechanism, aiming at the production of neutron-rich isotopes relevant for the astrophysical r-process nucleosynthesis. In this paper, we report on the laser acceleration of gold ions to beyond 7 MeV/u, exceeding for the first time an important prerequisite for this nuclear reaction scheme. Moreover, the gold ion charge states have been detected with an unprecedented resolution, which enables the separation of individual charge states up to 4 MeV/u. The recorded charge-state distributions show a remarkable dependency on the target foil thickness and differ from simulations, lacking a straight-forward explanation by the established ionization models.
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3
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Prasselsperger A, Coughlan M, Breslin N, Yeung M, Arthur C, Donnelly H, White S, Afshari M, Speicher M, Yang R, Villagomez-Bernabe B, Currell FJ, Schreiber J, Dromey B. Real-Time Electron Solvation Induced by Bursts of Laser-Accelerated Protons in Liquid Water. Phys Rev Lett 2021; 127:186001. [PMID: 34767414 DOI: 10.1103/physrevlett.127.186001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Understanding the mechanisms of proton energy deposition in matter and subsequent damage formation is fundamental to radiation science. Here we exploit the picosecond (10^{-12} s) resolution of laser-driven accelerators to track ultrafast solvation dynamics for electrons due to proton radiolysis in liquid water (H_{2}O). Comparing these results with modeling that assumes initial conditions similar to those found in photolysis reveals that solvation time due to protons is extended by >20 ps. Supported by magnetohydrodynamic theory this indicates a highly dynamic phase in the immediate aftermath of the proton interaction that is not accounted for in current models.
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Affiliation(s)
- A Prasselsperger
- Fakultät für Physik, Ludwig-Maximilians-Universität München, 85748 Garching, Germany
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - M Coughlan
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - N Breslin
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - M Yeung
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - C Arthur
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - H Donnelly
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - S White
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - M Afshari
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
| | - M Speicher
- Fakultät für Physik, Ludwig-Maximilians-Universität München, 85748 Garching, Germany
| | - R Yang
- Fakultät für Physik, Ludwig-Maximilians-Universität München, 85748 Garching, Germany
| | - B Villagomez-Bernabe
- The Dalton Cumbria Facility and the School of Chemistry, The University of Manchester, Oxford Rd, Manchester M13 9PL, United Kingdom
| | - F J Currell
- The Dalton Cumbria Facility and the School of Chemistry, The University of Manchester, Oxford Rd, Manchester M13 9PL, United Kingdom
| | - J Schreiber
- Fakultät für Physik, Ludwig-Maximilians-Universität München, 85748 Garching, Germany
| | - B Dromey
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN, United Kingdom
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4
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Trapp E, Kolovetsiou-Kreiner V, Reisinger J, Bramreiter V, Speicher M, Geigl J, Petru E, Tamussino K, Pristauz G. Multigen Analyse bei Mamma- und Ovarialkarzinompatientinnen. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0039-3403402] [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: 10/24/2022] Open
Affiliation(s)
- E Trapp
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
| | - V Kolovetsiou-Kreiner
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
| | - J Reisinger
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
| | - V Bramreiter
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
| | - M Speicher
- Institut für Humangenetik der Medizinischen Universität Graz
| | - J Geigl
- Institut für Humangenetik der Medizinischen Universität Graz
| | - E Petru
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
| | - K Tamussino
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
| | - G Pristauz
- Universitätsklinik für Frauenheilkunde und Geburtshilfe der Medizinischen Universität Graz
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5
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Lindner FH, Bin JH, Englbrecht F, Haffa D, Bolton PR, Gao Y, Hartmann J, Hilz P, Kreuzer C, Ostermayr TM, Rösch TF, Speicher M, Parodi K, Thirolf PG, Schreiber J. A novel approach to electron data background treatment in an online wide-angle spectrometer for laser-accelerated ion and electron bunches. Rev Sci Instrum 2018; 89:013301. [PMID: 29390656 DOI: 10.1063/1.5001990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Laser-based ion acceleration is driven by electrical fields emerging when target electrons absorb laser energy and consecutively leave the target material. A direct correlation between these electrons and the accelerated ions is thus to be expected and predicted by theoretical models. We report on a modified wide-angle spectrometer, allowing the simultaneous characterization of angularly resolved energy distributions of both ions and electrons. Equipped with online pixel detectors, the RadEye1 detectors, the investigation of this correlation gets attainable on a single shot basis. In addition to first insights, we present a novel approach for reliably extracting the primary electron energy distribution from the interfering secondary radiation background. This proves vitally important for quantitative extraction of average electron energies (temperatures) and emitted total charge.
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Affiliation(s)
- F H Lindner
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - J H Bin
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - F Englbrecht
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - D Haffa
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - P R Bolton
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - Y Gao
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - J Hartmann
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - P Hilz
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - C Kreuzer
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - T M Ostermayr
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - T F Rösch
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - M Speicher
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - K Parodi
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - P G Thirolf
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
| | - J Schreiber
- Lehrstuhl für Experimentalphysik - Medizinische Physik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching bei München, Germany
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6
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Schmid M, Klaritsch P, Arzt W, Burkhardt T, Duba HC, Häusler M, Hafner E, Lang U, Pertl B, Speicher M, Steiner H, Tercanli S, Merz E, Heling KS, Eiben B. Cell-Free DNA Testing for Fetal Chromosomal Anomalies in clinical practice: Austrian-German-Swiss Recommendations for non-invasive prenatal tests (NIPT). Ultraschall Med 2015; 36:507-510. [PMID: 26468773 DOI: 10.1055/s-0035-1553804] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- M Schmid
- Abteilung für Geburtshilfe und feto-maternale Medizin, Universitätsklinik für Frauenheilkunde Wien (Österreich)
| | - P Klaritsch
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Medizinische Universität Graz (Österreich)
| | - W Arzt
- Abteilung für Pränatalmedizin, Landesfrauen- und Kinderklinik Linz (Österreich)
| | - T Burkhardt
- Klinik für Geburtshilfe, Universitäts-Spital Zürich (Schweiz)
| | - H C Duba
- Zentrum Medizinische Genetik, Landes-Frauen- und Kinderklinik Linz (Österreich)
| | - M Häusler
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Medizinische Universität Graz (Österreich)
| | - E Hafner
- Geburtshilflich-Gynäkologische Abteilung, Sozialmedizinisches Zentrum Ost - Donauspital, Wien (Österreich)
| | - U Lang
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Medizinische Universität Graz (Österreich)
| | - B Pertl
- Pränatalzentrum, Privatklinik Graz-Ragnitz (Österreich)
| | - M Speicher
- Institut für Humangenetik, Universität Graz (Österreich)
| | - H Steiner
- Praxis für Pränatalmedizin, Praxis für Pränatalmedizin, Salzburg (Österreich)
| | - S Tercanli
- Ultraschall Freie-Strasse, Basel (Schweiz)
| | - E Merz
- Zentrum für Ultraschall und Pränatalmedizin; Frankfurt (Deutschland)
| | - K S Heling
- Praxis Friedrichstrasse für Pränataldiagnostik, Berlin (Deutschland)
| | - B Eiben
- Institut für Labormedizin und Klinische Genetik Rhein/ Ruhr, amedes Gruppe, Essen (Deutschland)
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7
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Heitzer E, Ulz P, Auer M, Belic J, Sumitra M, Lax S, Hoefler G, Augustin H, Edgar P, Bauernhofer T, Geigl J, Speicher M. 221 Clinical utility of circulating tumor DNA in human cancers: A report of more than 300 plama-Seqs. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30108-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Riethdorf S, Westphal M, Mueller C, Holtschmidt J, Schulte A, Matschke J, Auer M, Speicher M, Lamszus K, Pantel K. BI-25 * CIRCULATING TUMOR CELLS IN GLIOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou239.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Sperl D, Benesch M, Urban C, Lackner H, Sovinz P, Speicher M, Uhrig S, Schwarzbraun T, Schwinger W, zur Stadt U, Beutel K, Janka G, Scarpatetti M, Seidel M. Fatal EBV Infection and Variable Clinical Manifestations in an XLP-1 Pedigree – Rapid Diagnosis of Primary Immunodeficiencies may Save Lives. Klin Padiatr 2012; 224:386-9. [DOI: 10.1055/s-0032-1323836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- D. Sperl
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
| | - M. Benesch
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
| | - C. Urban
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
| | - H. Lackner
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
| | - P. Sovinz
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
| | - M. Speicher
- Institut für Humangenetik, Medizinische Universität Graz, Graz, Austria
| | - S. Uhrig
- Institut für Humangenetik, Medizinische Universität Graz, Graz, Austria
| | - T. Schwarzbraun
- Institut für Humangenetik, Medizinische Universität Graz, Graz, Austria
| | - W. Schwinger
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
| | - U. zur Stadt
- Klinik und Poliklinik für pädiatrische Hämatologie and Onkologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - K. Beutel
- Klinik und Poliklinik für pädiatrische Hämatologie and Onkologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - G. Janka
- Klinik und Poliklinik für pädiatrische Hämatologie and Onkologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - M. Scarpatetti
- Institut für Pathologie, Medizinische Universität Graz, Graz, Austria
| | - M. Seidel
- Pädiatrische Hämatologie-Onkologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, Graz, Austria
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Speicher M, Eiben B. Pränatale, Präimplantations- und Polkörperdiagnostik. MED GENET-BERLIN 2011. [DOI: 10.1007/s11825-011-0299-3] [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: 10/14/2022]
Affiliation(s)
- M. Speicher
- Aff1_299 grid.5110.5 0000000121539003 Institut für Humangenetik der Medizinischen Universität Graz Graz Österreich
| | - B. Eiben
- Aff2_299 MVZ Institut für Labormedizin und Klinische Genetik Rhein/Ruhr GmbH Essen Deutschland
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11
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Geigl J, Speicher M. Neue Verfahren für Einzelzellanalysen in Forschung und Diagnostik. MED GENET-BERLIN 2008. [DOI: 10.1007/s11825-008-0138-3] [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: 11/28/2022]
Abstract
Zusammenfassung
Die traditionelle Zytogenetik ist ein Paradebeispiel für eine Einzelzelldiagnostik, weil mit jeder gebänderten Metaphase das gesamte Genom einer Zelle – bei relativ niedriger Auflösung – untersucht wird. Dies repräsentierte über mehrere Jahrzehnte einen wichtigen Unterschied zu molekulargenetischen Untersuchungstechniken, die in der Mehrheit der Fälle auf DNA oder RNA basieren, die aus hunderten oder tausenden von Zellen extrahiert wurden. Viele Fragestellungen können jedoch nur durch Analysen auf dem Niveau einzelner oder weniger Zellen beantwortet werden. Deshalb wurden besonders in den letzten Jahren neue Einzelzelltechniken mit dem Ziel entwickelt, immer mehr Loci mit verbessertem Auflösungsvermögen simultan analysieren zu können. In dieser Übersichtsarbeit werden die diesbezüglich wichtigsten Entwicklungen der letzten Jahre zusammengefasst.
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Affiliation(s)
- J. Geigl
- Aff1_138 grid.11598.34 0000000089882476 Institut für Humangenetik Medizinische Universität Graz Harrachgasse 21/8 A-8010 Graz Österreich
| | - M. Speicher
- Aff1_138 grid.11598.34 0000000089882476 Institut für Humangenetik Medizinische Universität Graz Harrachgasse 21/8 A-8010 Graz Österreich
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12
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Auer-Grumbach M, John E, Wallefeld W, Fischer C, Speicher M, Laing N. G.P.17.01 A novel slow-skeletal myosin (MYH7) mutation in a large Austrian family presenting as late onset distal myopathy. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Naumann S, Reutzel D, Speicher M, Decker HJ. Complete karyotype characterization of the K562 cell line by combined application of G-banding, multiplex-fluorescence in situ hybridization, fluorescence in situ hybridization, and comparative genomic hybridization. Leuk Res 2001; 25:313-22. [PMID: 11248328 DOI: 10.1016/s0145-2126(00)00125-9] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [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: 10/18/2022]
Abstract
This study combines conventional cytogenetics, fluorescence in situ hybridization (FISH), multiplex-FISH and comparative genomic hybridization (CGH). In applying this multimodal approach on the human leukemia cell line K562, the chromosome composition was refined in detail and compared with data from the literature. A hypotriploid karyotype with a modal chromosome number of 67, and 21 unique marker chromosomes were identified. The classification of six markers was identical to published data and the composition of five further markers from the literature could be fully clarified for the first time. The composition of another five markers, which have been interpreted in divergent ways in different studies, were elucidated without doubt. Finally, five new markers of our study seem to have no equivalents in former studies, very likely due to limitations of conventional cytogenetics. The combinatory application of complementary techniques as shown in this study will be very useful to provide the basis of a refined genotype analysis on the chromosomal level.
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Affiliation(s)
- S Naumann
- Department of Hematology, 3rd Medical Clinic, Johannes Gutenberg University of Mainz, Verfuegungsgebäude, 911-SFB 519, Obere Zahlbacker Strasse 63, D55101, Mainz, Germany
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Decker HJ, Neuhaus C, Jauch A, Speicher M, Ried T, Bujard M, Brauch H, Störkel S, Stöckle M, Seliger B, Huber C. Detection of a germline mutation and somatic homozygous loss of the von Hippel-Lindau tumor-suppressor gene in a family with a de novo mutation. A combined genetic study, including cytogenetics, PCR/SSCP, FISH, and CGH. Hum Genet 1996; 97:770-6. [PMID: 8641695 DOI: 10.1007/bf02346188] [Citation(s) in RCA: 21] [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: 02/01/2023]
Abstract
von Hippel-Lindau (VHL) disease is a pleiotropic disorder featuring a variety of malignant and benign tumors of the eye, central nervous system, kidney, and adrenal gland. Recently the VHL gene has been identified in the chromosomal region 3p25-26. Prognosis and successful management of VHL patients and their descendants depend on unambiguous diagnosis. Due to recurrent hemangioblastomas, a29-year-old patient without familial history of VHL disease was diagnosed to be at risk for the disease. Histopathological examination of a small renal mass identified a clear cell tumor with a G1 grading. Genetic characterization of the germline and of the renal tumor was performed. Polymerase chain reaction/single strand conformation polymorphism (PCR/SSCP) analysis with primers from the VHL gene identified a deletion of a single nucleotide in exon 2 in the patient's germline and in the tumor, but not in the DNA of his parents. This deletion therefore must be a de novo mutation. Comparative genome hybridization (CGH) and fluorescence in situ hybridization (FISH) analysis of the G1 tumor with differentially labelled yeast artifical chromosome (YAC) clones showed loss of 3p and of the 3p26 signals, respectively. In conclusion, we identified a de novo germline mutation in the VHL gene of a young patient and a somatic chromosome 3p loss at the homologous chromosome 3 in his renal tumor. Our results suggest a recessive mode of inactivation of the VHL gene, providing solid evidence for its tumor-suppressor gene characteristics. Our data show the diagnostic potential of genetic testing, especially in patients without VHL family history. Furthermore, the findings of homozygous inactivation of the VHL gene in a G1 tumor support the notion that the inactivation of the VHL gene is an early event in tumorigenesis of renal cell carcinoma.
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Affiliation(s)
- H J Decker
- Department of Haematology and Oncology, Johannes-Gutenberg University of Mainz, Germany
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