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Di Nora V, Fridman E, Nikitin E, Bilodid Y, Mikityuk K. Optimization of multi-group energy structures for diffusion analyses of sodium-cooled fast reactors assisted by simulated annealing – Part II: Methodology application. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2021.108541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ponomarev A, Mikityuk K, Fridman E, Di Nora VA, Bubelis E, Schikorr M. Superphénix Benchmark Part II: Transient Results. Journal of Nuclear Engineering and Radiation Science 2021. [DOI: 10.1115/1.4051877] [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: 11/08/2022]
Abstract
Abstract
The paper presents a transient simulation phase of the new benchmark on a large sodium fast reactor (SFR). This phase of the benchmark is devoted to the modeling of selected operational transients performed during startup tests of the French SFR Superphénix. Six operational transients were selected for the analysis. The specifications of a simplified thermal hydraulic model equipped with point kinetics reactivity data and boundary conditions for the selected transients are given in the paper. The developed model contains a necessary thermal hydraulic description of the primary system components, assumptions to account for thermal expansion reactivity feedback from out-of-core structures, neutron kinetics parameters, power distribution, and reactivity coefficients. The neutronic input parameters were obtained with the help of the Monte Carlo code serpent during the first phase of the benchmark related to the static neutronic characterization of the core. In this study, the solution of the transient benchmark was obtained with three thermal hydraulic system codes, namely, TRACE, SIM-SFR, and ATHLET. The numerical results, compared to the available experimental data, exhibit a reasonable mutual agreement. Particular discrepancies between calculations and experiments could not be fully resolved. Therefore, a set of recommendations for achieving an improved agreement was proposed. In general, the proposed transient benchmark can be seen as an effective tool for validation and cross comparisons of system codes applied for safety analyses of SFRs, including approbation and comparison of different modeling features for thermal expansion of the out-of-core structures.
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Affiliation(s)
- A. Ponomarev
- Laboratory for Scientific Computing and Modelling, Paul Scherrer Institute (PSI), Forschungsstrasse 111, Villigen PSI 5232, Switzerland
| | - K. Mikityuk
- Laboratory for Scientific Computing and Modelling, Paul Scherrer Institute (PSI), Forschungsstrasse 111, Villigen PSI 5232, Switzerland
| | - E. Fridman
- Reactor Safety Division, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstraße 400, Dresden DE-01328, Germany
| | - V. A. Di Nora
- Reactor Safety Division, Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstraße 400, Dresden DE-01328, Germany
| | - E. Bubelis
- Institute for Reactor Physics and Reactor Technology, Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, DE 76344, Deutschland
| | - M. Schikorr
- Institute for Reactor Physics and Reactor Technology, Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, DE 76344, Deutschland
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Di Nora V, Fridman E, Nikitin E, Bilodid Y, Mikityuk K. Optimization of multi-group energy structures for diffusion analyses of sodium-cooled fast reactors assisted by simulated annealing – Part I: Methodology demonstration. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2021.108183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Nikitin E, Fridman E, Mikityuk K, Radman S, Fiorina C. NEUTRONIC MODELLING OF THE FFTF CONTROL ROD WORTH MEASUREMENTS WITH DIFFUSION CODES. EPJ Web Conf 2021. [DOI: 10.1051/epjconf/202124710017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This paper presents an assessment of three deterministic core simulators with the focus on the neutronic performance in steady-state calculations of small Sodium cooled Fast Reactor cores. The selected codes are DYN3D, PARCS and the novel multi-physics solver GeN-Foam. By using these codes, the multi-group diffusion solutions are obtained for the selected twenty control rod worth measurements performed during the isothermal physics tests of the Fast Flux Test Facility (FFTF). The identical set of homogenized few-group cross sections applied in the calculations is generated with the Serpent Monte Carlo code. The numerical results are compared with each other as well as with the measured values. The obtained numerical results, such as the multiplication factors and control rod worth values, are in good agreement as compared to the experimental data. Furthermore, a comparison of the radial power distributions is presented between DYN3D, PARCS and GeN-Foam. Ultimately, the power distributions are compared to the full core Serpent solution, demonstrating an adequate performance of the selected deterministic tools. In overall, this study presents a verification and validation of the neutronic solvers applied by DYN3D, PARCS and GeN-Foam to steady-state calculations of SFR cores.
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Fridman E, Valtavirta V, Aufiero M. Nuclear data sensitivity and uncertainty analysis of critical VENUS-F cores with the Serpent Monte Carlo code. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2019.107196] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nikitin E, Fridman E. Extension of the reactor dynamics code DYN3D to SFR applications – Part II: Validation against the Phenix EOL control rod withdrawal tests. ANN NUCL ENERGY 2018. [DOI: 10.1016/j.anucene.2018.05.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Drori T, Zilberman D, Fridman E, Churi C, Winkler H, Soudack M, Mor Y. An unusual radiologic appearance of Wilms tumor. Urol Case Rep 2018; 20:85-87. [PMID: 30035097 PMCID: PMC6052198 DOI: 10.1016/j.eucr.2018.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 07/06/2018] [Indexed: 11/24/2022] Open
Affiliation(s)
- T. Drori
- Department of Urology, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
| | - D.E. Zilberman
- Department of Urology, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
| | - E. Fridman
- Department of Pathology, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
| | - C. Churi
- Department of Pediatric Hemato-Oncology. Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
- The Chaim Sheba Medical Center and Edmond and Lily Safra Children's Hospital, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
| | - H. Winkler
- Department of Urology, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
| | - M. Soudack
- Unit of Pediatric Imaging, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
- The Chaim Sheba Medical Center and Edmond and Lily Safra Children's Hospital, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
| | - Y. Mor
- Department of Urology, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
- The Chaim Sheba Medical Center and Edmond and Lily Safra Children's Hospital, Tel-Hashomer, Ramat-Gan, Affiliated to Sackler School of Medicine, Tel-Aviv University, Israel
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Nikitin E, Fridman E. Extension of the reactor dynamics code DYN3D to SFR applications – Part III: Validation against the initial phase of the Phenix EOL natural convection test. ANN NUCL ENERGY 2018. [DOI: 10.1016/j.anucene.2018.05.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
AbstractThe reactor dynamics code DYN3D being developed at the Helmholtz-Zentrum Dresden-Rossendorf is currently under extension for Sodium cooled Fast Reactor analyses. This paper provides an overview on the new version of DYN3D to be used for SFR core calculations. The current article shortly describes the newly implemented thermal mechanical models, which can account for thermal expansion effects of the reactor core. Furthermore, the methodology used in Sodium cooled Fast Reactor analyses to generate homogenized few-group cross sections is summarized. The conducted and planned verification and validation studies are briefly presented. Related publications containing more detailed descriptions are outlined for the completeness of this overview.
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Affiliation(s)
- E. Nikitin
- 1Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, E-mail: , and Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e.V., Bautzner Landstraße 400, 01328 Dresden, Germany
| | - E. Fridman
- 2Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e.V., Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Y. Bilodid
- 2Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e.V., Bautzner Landstraße 400, 01328 Dresden, Germany
| | - S. Kliem
- 2Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e.V., Bautzner Landstraße 400, 01328 Dresden, Germany
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Affiliation(s)
- E. Fridman
- Ben-Gurion University of the Negev Department of Nuclear Engineering POB 653, Beer Sheva 84105, Israel
| | - E. Shwageraus
- Ben-Gurion University of the Negev Department of Nuclear Engineering POB 653, Beer Sheva 84105, Israel
| | - A. Galperin
- Ben-Gurion University of the Negev Department of Nuclear Engineering POB 653, Beer Sheva 84105, Israel
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Affiliation(s)
- Y. Ronen
- Ben-Gurion University of the Negev, Department of Nuclear Engineering, Beer-Sheva 84105, Israel
| | - E. Fridman
- Ben-Gurion University of the Negev, Department of Nuclear Engineering, Beer-Sheva 84105, Israel
| | - E. Shwageraus
- Ben-Gurion University of the Negev, Department of Nuclear Engineering, Beer-Sheva 84105, Israel
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Affiliation(s)
- E. Fridman
- Ben-Gurion University of the Negev, Department of Nuclear Engineering P.O. Box 653, Beer Sheva 84105, Israel
| | - E. Shwageraus
- Ben-Gurion University of the Negev, Department of Nuclear Engineering P.O. Box 653, Beer Sheva 84105, Israel
| | - A. Galperin
- Ben-Gurion University of the Negev, Department of Nuclear Engineering P.O. Box 653, Beer Sheva 84105, Israel
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Kotlyar D, Fridman E, Shwageraus E. One-Group Cross-Section Generation for Monte Carlo Burnup Codes: Multigroup Method Extension and Verification. NUCL SCI ENG 2017. [DOI: 10.13182/nse14-59] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. Kotlyar
- University of Cambridge, Department of Engineering CB2 1PZ Cambridge, United Kingdom
| | - E. Fridman
- Helmholtz-Zentrum Dresden-Rossendorf Bautzner Landstraβe 400, 01328 Dresden, Germany
| | - E. Shwageraus
- University of Cambridge, Department of Engineering CB2 1PZ Cambridge, United Kingdom
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Amit M, Na'ara S, Leider-Trejo L, Binenbaum Y, Kulish N, Fridman E, Shabtai-Orbach A, Wong RJ, Gil Z. Upregulation of RET induces perineurial invasion of pancreatic adenocarcinoma. Oncogene 2017; 36:3232-3239. [PMID: 28092668 DOI: 10.1038/onc.2016.483] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/14/2016] [Accepted: 11/17/2016] [Indexed: 02/06/2023]
Abstract
Tumor spread along nerves, a phenomenon known as perineurial invasion, is common in various cancers including pancreatic ductal adenocarcinoma (PDAC). Neural invasion is associated with poor outcome, yet its mechanism remains unclear. Using the transgenic Pdx-1-Cre/KrasG12D /p53R172H (KPC) mouse model, we investigated the mechanism of neural invasion in PDAC. To detect tissue-specific factors that influence neural invasion by cancer cells, we characterized the perineurial microenvironment using a series of bone marrow transplantation (BMT) experiments in transgenic mice expressing single mutations in the Cx3cr1, GDNF and CCR2 genes. Immunolabeling of tumors in KPC mice of different ages and analysis of human cancer specimens revealed that RET expression is upregulated during PDAC tumorigenesis. BMT experiments revealed that BM-derived macrophages expressing the RET ligand GDNF are highly abundant around nerves invaded by cancer. Inhibition of perineurial macrophage recruitment, using the CSF-1R antagonist GW2580 or BMT from CCR2-deficient donors, reduced perineurial invasion. Deletion of GDNF expression by perineurial macrophages, or inhibition of RET with shRNA or a small-molecule inhibitor, reduced perineurial invasion in KPC mice with PDAC. Taken together, our findings show that RET is upregulated during pancreas tumorigenesis and its activation induces cancer perineurial invasion. Trafficking of BM-derived macrophages to the perineurial microenvironment and secretion of GDNF are essential for pancreatic cancer neural spread.
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Affiliation(s)
- M Amit
- Head and Neck Surgery Department, MD Anderson Cancer Center University of Texas, Houston, TX, USA.,The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel.,Department of Otolaryngology Head and Neck Surgery, The Head and Neck Center, Rambam Healthcare Campus, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, Rambam Medical Center, The Technion, Israel Institute of Technology, Haifa, Israel
| | - S Na'ara
- The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel.,Department of Otolaryngology Head and Neck Surgery, The Head and Neck Center, Rambam Healthcare Campus, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, Rambam Medical Center, The Technion, Israel Institute of Technology, Haifa, Israel
| | - L Leider-Trejo
- Department of Pathology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Y Binenbaum
- The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel
| | - N Kulish
- The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel
| | - E Fridman
- The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel.,Department of Otolaryngology Head and Neck Surgery, The Head and Neck Center, Rambam Healthcare Campus, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, Rambam Medical Center, The Technion, Israel Institute of Technology, Haifa, Israel
| | - A Shabtai-Orbach
- The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel
| | - R J Wong
- Department of Surgery Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Z Gil
- The Laboratory for Applied Cancer Research, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, The Technion, Israel Institute of Technology, Haifa, Israel.,Department of Otolaryngology Head and Neck Surgery, The Head and Neck Center, Rambam Healthcare Campus, Clinical Research Institute at Rambam, Rappaport Institute of Medicine and Research, Rambam Medical Center, The Technion, Israel Institute of Technology, Haifa, Israel
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Leibowitz-Amit R, Israel A, Gal M, Atenafu E, Symon Z, Portnoy O, Laufer M, Dotan Z, Ramon J, Avni D, Fridman E, Berger R. Association between the Absolute Baseline Lymphocyte Count and Response to Neoadjuvant Platinum-based Chemotherapy in Muscle-invasive Bladder Cancer. Clin Oncol (R Coll Radiol) 2016; 28:790-796. [DOI: 10.1016/j.clon.2016.07.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 06/06/2016] [Accepted: 06/22/2016] [Indexed: 01/04/2023]
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Abstract
Abstract
The article provides an overview on the code DYN3D which is a three-dimensional core model for steady-state, dynamic and depletion calculations in reactor cores with quadratic or hexagonal fuel assembly geometry being developed by the Helmholtz-Zentrum Dresden-Rossendorf for more than 20 years. The current paper gives an overview on the basic DYN3D models and the available code couplings. The verification and validation status is shortly outlined. The paper concludes with the current developments of the DYN3D code. For more detailed information the reader is referred to the publications cited in the corresponding chapters.
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Affiliation(s)
- S. Kliem
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - Y. Bilodid
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - E. Fridman
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - S. Baier
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - A. Grahn
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - A. Gommlich
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - E. Nikitin
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
| | - U. Rohde
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) e. V. , Bautzner Landstraße 400, 01328 Dresden , Germany
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Baldova D, Fridman E, Shwageraus E. High Conversion Th–U233 fuel for current generation of PWRs: Part III – Fuel availability and utilization considerations. ANN NUCL ENERGY 2016. [DOI: 10.1016/j.anucene.2015.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bilodid Y, Kotlyar D, Margulis M, Fridman E, Shwageraus E. Spectral history model in DYN3D: Verification against coupled Monte-Carlo thermal-hydraulic code BGCore. ANN NUCL ENERGY 2015. [DOI: 10.1016/j.anucene.2015.03.030] [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: 11/25/2022]
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Tusheva P, Altstadt E, Willschütz HG, Fridman E, Weiß FP. Investigations on in-vessel melt retention by external cooling for a generic VVER-1000 reactor. ANN NUCL ENERGY 2015. [DOI: 10.1016/j.anucene.2014.07.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shapira R, Levy T, Shaked S, Fridman E, David L. Extensive heterosis in growth of yeast hybrids is explained by a combination of genetic models. Heredity (Edinb) 2014; 113:316-26. [PMID: 24690755 PMCID: PMC4181071 DOI: 10.1038/hdy.2014.33] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 01/17/2014] [Accepted: 02/04/2014] [Indexed: 11/08/2022] Open
Abstract
Heterosis, also known as hybrid vigor, is the superior performance of a heterozygous hybrid relative to its homozygous parents. Despite the scientific curiosity of this phenotypic phenomenon and its significance for food production in agriculture, its genetic basis is insufficiently understood. Studying heterosis in yeast can potentially yield insights into its genetic basis, can allow one to test the different hypotheses that have been proposed to explain the phenomenon and allows better understanding of how to take advantage of this phenomenon to enhance food production. We therefore crossed 16 parental yeast strains to form 120 yeast hybrids, and measured their growth rates under five environmental conditions. A considerable amount of dominant genetic variation was found in growth performance, and heterosis was measured in 35% of the hybrid-condition combinations. Despite previous reports of correlations between heterosis and measures of sequence divergence between parents, we detected no such relationship. We used several analyses to examine which genetic model might explain heterosis. We found that dominance complementation of recessive alleles, overdominant interactions within loci and epistatic interactions among loci each contribute to heterosis. We concluded that in yeast heterosis is a complex phenotype created by the combined contribution of different genetic interactions.
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Affiliation(s)
- R Shapira
- Department of Animal Sciences, RH Smith
Faculty of Agriculture, Food and Environment, The Hebrew University of
Jerusalem, Rehovot, Israel
| | - T Levy
- Department of Animal Sciences, RH Smith
Faculty of Agriculture, Food and Environment, The Hebrew University of
Jerusalem, Rehovot, Israel
| | - S Shaked
- Department of Animal Sciences, RH Smith
Faculty of Agriculture, Food and Environment, The Hebrew University of
Jerusalem, Rehovot, Israel
- The RH Smith Institute for Plant Sciences
and Genetics, RH Smith Faculty of Agriculture, Food and Environment, The Hebrew
University of Jerusalem, Rehovot, Israel
| | - E Fridman
- The RH Smith Institute for Plant Sciences
and Genetics, RH Smith Faculty of Agriculture, Food and Environment, The Hebrew
University of Jerusalem, Rehovot, Israel
| | - L David
- Department of Animal Sciences, RH Smith
Faculty of Agriculture, Food and Environment, The Hebrew University of
Jerusalem, Rehovot, Israel
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Linder N, Lahat Y, Kogan A, Fridman E, Kouadio F, Melamed N, Yogev Y, Klinger G. Macrosomic newborns of non-diabetic mothers: anthropometric measurements and neonatal complications. Arch Dis Child Fetal Neonatal Ed 2014; 99:F353-8. [PMID: 24792775 DOI: 10.1136/archdischild-2013-305032] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To assess the association of anthropometric measurements with neonatal complications in macrosomic newborns of non-diabetic mothers. DESIGN Retrospective cohort study. PATIENTS All liveborn, singleton, full term newborns with birth weight ≥4000 g born to non-diabetic mothers at a tertiary medical centre in 1995-2005 (n=2766, study group) were matched to the next born, healthy, full term infant with a birth weight of 3000-4000 g (control group). Exclusion criteria were multiple birth, congenital infection, major malformations and pregnancy complications. INTERVENTION Data collection by file review. OUTCOME MEASURES Complication rates were compared between study and control groups and between symmetric and asymmetric macrosomic newborns, defined by weight/length ratio (WLR), Body Mass Index and Ponderal Index. RESULTS The 2766 non-diabetic macrosomic infants identified were matched to 2766 control infants. The macrosomic group had higher rates of hypoglycaemia (1.2% vs 0.5%, p=0.008), transient tachypnoea of the newborn (1.5% vs 0.5%, p<0.001), hyperthermia (0.6% vs 0.1%, p=0.012), and birth trauma (2% vs 0.7%, p<0.001), with no cases of symptomatic polycythaemia, and only one case of hypoglycaemia. Hypoglycaemia was positively associated with birth weight. It was significantly higher in the asymmetric than the symmetric macrosomic newborns, defined by WLR (1.7% vs 0.3%, p<0.001). CONCLUSIONS Macrosomic infants of non-diabetic mothers are at increased risk of neonatal complications. However, routine measurements of haematocrit and calcium may not be necessary. Symmetric macrosomic infants (by WLR) have a similar rate of hypoglycaemia as normal-weight infants. Thus, repeat glucose measurements in symmetric macrosomic infants are not justified.
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Affiliation(s)
- N Linder
- Department of Neonatology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Lahat
- Department of Neonatology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel
| | - A Kogan
- Department of Neonatology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel
| | - E Fridman
- Department of Neonatology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel
| | - F Kouadio
- Department of Neonatology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel
| | - N Melamed
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel Departments of Obstetrics and Gynecology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel
| | - Y Yogev
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel Departments of Obstetrics and Gynecology, Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva, Israel
| | - G Klinger
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel Neonatal Intensive Care Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
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Linder N, Hiersch L, Fridman E, Lubin D, Kouadio F, Berkowicz N, Merlob P, Melamed N. The effect of gestational age on neonatal outcome in low-risk singleton term deliveries. J Matern Fetal Neonatal Med 2014; 28:297-302. [DOI: 10.3109/14767058.2014.916266] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Fridman E, Duerigen S, Bilodid Y, Kotlyar D, Shwageraus E. Axial discontinuity factors for the nodal diffusion analysis of high conversion BWR cores. ANN NUCL ENERGY 2013. [DOI: 10.1016/j.anucene.2013.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Rachamin R, Fridman E, Galperin A. Design and analysis of an innovative pressure tube light water reactor with variable moderator control. ANN NUCL ENERGY 2013. [DOI: 10.1016/j.anucene.2013.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Abstract
DYN3D is a three-dimensional nodal code for steady-state and transient analyses of Light Water Reactors applicable for square and hexagonal fuel assembly geometries. Several versions of the DYN3D code are available including a multigroup diffusion and a simplified P3 (SP3) neutron transport option. The multi-group SP3 method based on a trigonal geometry was developed recently. This method is applicable to the analysis of reactor cores with hexagonal fuel assemblies and allows flexible mesh refinement. In this paper, the theoretical background for the SP3 method is briefly described. The consistency of the implementation of the trigonal SP3 methodology in DYN3D is demonstrated by means of a simplified VVER-440 core test example. The corresponding few-group homogenized cross sections and reference solutions were produced by the Monte Carlo code Serpent. The DYN3D results are in good agreement with the reference solutions.
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Affiliation(s)
- S. Duerigen
- Helmholtz-Zentrum Dresden-Rossendorf e.V., Reactor Safety Division, P.O. Box 510119, D-01314 Dresden, Germany
| | - E. Fridman
- Helmholtz-Zentrum Dresden-Rossendorf e.V., Reactor Safety Division, P.O. Box 510119, D-01314 Dresden, Germany
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Hübner S, Bdolach E, Ein-Gedy S, Schmid KJ, Korol A, Fridman E. Phenotypic landscapes: phenological patterns in wild and cultivated barley. J Evol Biol 2012; 26:163-74. [PMID: 23176039 DOI: 10.1111/jeb.12043] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 09/11/2012] [Accepted: 10/08/2012] [Indexed: 01/31/2023]
Abstract
Phenotypic variation in natural populations is the outcome of the joint effects of environmentally induced adaptations and neutral processes on the genetic architecture of quantitative traits. In this study, we examined the role of adaptation in shaping wild barley phenotypic variation along different environmental gradients. Detailed phenotyping of 164 wild barley (Hordeum spontaneum) accessions from Israel (of the Barley1K collection) and 18 cultivated barley (H. vulgare) varieties was conducted in common garden field trials. Cluster analysis based on phenotypic data indicated that wild barley in this region can be differentiated into three ecotypes in accordance with their ecogeographical distribution: north, coast and desert. Population differentiation (Q(ST) ) for each trait was estimated using a hierarchical Bayesian model and compared to neutral differentiation (F(ST) ) based on 42 microsatellite markers. This analysis indicated that the three clusters diverged in morphological but not in reproductive characteristics. To address the issue of phenotypic variation along environmental gradients, climatic and soil gradients were compared with each of the measured traits given the geographical distance between sampling sites using a partial Mantel test. Flowering time and plant growth were found to be differentially correlated with climatic and soil characteristic gradients, respectively. The H. vulgare varieties were superior to the H. spontaneum accessions in yield components, yet resembled the Mediterranean types in vegetative characteristics and flowering time, which may indicate the geographical origin of domesticated barley.
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Affiliation(s)
- S Hübner
- Department of Evolutionary Biology, University of Haifa, Haifa, Israel
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Rohde U, Baier S, Duerigen S, Fridman E, Kliem S, Merk B. Development and verification of the coupled 3D neutron kinetics/thermal-hydraulics code DYN3D-HTR for the simulation of transients in block-type HTGR. Nuclear Engineering and Design 2012. [DOI: 10.1016/j.nucengdes.2011.09.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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35
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Dotan ZA, Fridman E, Lindner A, Ramon J, Pode D, Bejar J, Kopolovic J, Pizov G, Sandbank J, Katz R, Shapiro A, Shilo Y, Nativ O. Detection of prostate cancer by radio-frequency near-field spectroscopy in radical prostatectomy ex vivo specimens. Prostate Cancer Prostatic Dis 2012; 16:73-8. [PMID: 22964689 DOI: 10.1038/pcan.2012.34] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The aim of radical prostatectomy (RP) is the complete removal of the prostate gland with negative surgical margins. The presence of cancer at the surgical margin is associated with higher probability of disease progression. Current methods of intraoperative margin assessment are inaccurate or time-consuming.The study goal was to evaluate the ability of a novel device (Dune Medical Devices) to differentiate between cancer and BPH. METHODS A total of 49 patients undergoing RP in four medical centers between November 2007 and May 2008 were enrolled in this study.The device was applied to numerous intra- and extra-capsular sites of freshly excised RP specimens. Measurement sites were accurately marked and analyzed histologically. The ability of the device to differentiate between malignant and nonmalignant sites was assessed. RESULTS A total of 15,156 measurements from 45 patients were analyzed. Differentiation of the intra-capsular malignant sites from extra-capsular nonmalignant sites (bladder neck and apex regions) depends on the cancer feature size. Differentiation was achieved with sensitivity and specificity of 93.6 (95% confidence interval (CI): 88-98) and 94.1 (95% CI: 93-95), respectively, at feature sizes at or >0.8 mm in diameter. The device was able to discriminate between all intra-capsular malignant (with feature sizes down to a few cells) and nonmalignant measurement sites, with sensitivity and specificity of 80.8 (95% CI: 73-87) and 68.4 (95% CI: 67-69), respectively. CONCLUSIONS First results from a radio-frequency near-field spectroscopy sensor look promising for differentiation between cancer and benign prostate tissue. The sensor's dimensions (radius of ~ 1 mm) and design enable use in open, laparoscopic and robotic RP to evaluate the surgical margins intraoperatively.
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Affiliation(s)
- Z A Dotan
- Department of Urology, Uro-Oncology Service, Chaim Sheba Medical Center, Tel Hashomer, Israel.
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Kotlyar D, Shaposhnik Y, Fridman E, Shwageraus E. Coupled neutronic thermo-hydraulic analysis of full PWR core with Monte-Carlo based BGCore system. Nuclear Engineering and Design 2011. [DOI: 10.1016/j.nucengdes.2011.07.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rohde U, Baier S, Duerigen S, Fridman E, Kliem S, Merk B. Development of the coupled 3D neutron kinetics/thermal-hydraulics code DYN3D-HTR for the simulation of transients in block-type HTGR. KERNTECHNIK 2011. [DOI: 10.3139/124.110147] [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]
Abstract
Abstract
The Light Water Reactor (LWR) dynamics code DYN3D is extended and adopted for the application to block-type High Temperature Gas-Cooled Reactor (HTGR). A procedure for the cross section generation for the HTGR core calculations was developed. The modified Reactivity-Equivalent Physical Transformation (RPT) approach is applied in order to eliminate the double-heterogeneity of HTGR fuel elements in the deterministic lattice calculations. A full core analysis of the reference simplified HTGR core is performed with DYN3D using macroscopic nodal cross sections provided by HELIOS.
The SP3 transport approximation is integrated into the multi-group DYN3D code to take anisotropy of the neutron flux and heterogeneity of the core more precisely into account. The SP3 method was developed for hexagonal geometry of the graphite blocks, where the hexagons are subdivided into triangular nodes.
A 3D heat conduction module coupled with a channel-type coolant flow model is implemented into the code. It is shown that there is significant redistribution of the produced heat by heat conduction between the graphite blocks.
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Affiliation(s)
| | | | | | | | | | - B. Merk
- E-mail: Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstr. 400, 01328 Dresden
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Chajut A, Fridman E, Barshack I, Dotan ZA, Zepeniuk M, Tabak S, Lebanony D, Klinke E, Rosenwald S, Zion O, Faerman A, Ben-David M, Bokish A, Spector Y. A microRNA-based diagnostic test for kidney tumors classification. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10578] [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: 11/20/2022] Open
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Dotan ZA, Fridman E, Spector Y, Barshack I, Chajut A, Rosenwald S, Gilad S, Catane R, Meiri E, Berger R, Aharonov RT, Ezra E, Ramon J. MicroRNAs as prognostic markers for survival in renal cell carcinoma conventional type T 2-4. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21115] [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: 11/20/2022] Open
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Cortesi M, Fridman E, Volkov A, Shilstein SS, Chechik R, Breskin A, Vartsky D, Raviv G, Ramon J. New prospective for non-invasive detection, grading, size evaluation, and tumor location of prostate cancer. Prostate 2010; 70:1701-8. [PMID: 20564321 DOI: 10.1002/pros.21205] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND PSA blood test and other present screening tools fail to provide the required sensitivity and specificity and, at early stages, lack correlation with tumor grade, volume, and location. Thus alternative approaches are highly desired. We present and assess a novel method for PCa detection, grading, volume evaluation and tumor location, based on non-invasive zinc concentration mapping in the gland by means of a dedicated rectal probe. METHODS Zinc-concentration values measured in histologically examined tissue fragments from needle biopsy of 598 patients were analyzed. They were used to generate computer simulated zinc-concentration maps, further analyzed with image-processing tools. The tumor detection performances versus Gleason grade were assessed. RESULTS A significant increase of zinc depletion with increasing Gleason pattern (grade) classification was established. Tumor detection performance in zinc-concentration maps progressively improves with the cancer's first component score. Reliable information on the location, size and Gleason-grade combination of the lesion can be extracted for clinically relevant volumes. CONCLUSIONS Zinc depletion in the prostate peripheral zone is the basis for a novel, non-invasive PCa detection, localization, volume evaluation and grading method. Its realization and application as a pre-biopsy and pre-treatment examination, or a follow-up tool, relies on the development of a dedicated transrectal probe. It should have significant impact on biopsy effectiveness, point at a possible extraprostatic extension and provide critical data for focal treatment. The information on tumor grade and distribution may have an important impact on disease management.
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Affiliation(s)
- M Cortesi
- Departement of Particle Physics, Weizmann Institute of Science, Rehovot, Israel.
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Fridman E, Drobysheva V, Demin A. 117 DIFFICULT DIAGNOSIS OF INFECTIVE ENDOCARDITIS (IE) WITH A MASK OF AN HEMATOLOGY DISEASE: REPORT OF A CASE. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70136-0] [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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Demin A, Drobysheva V, Fridman E, Demina L. 076 KIDNEY DISEASE IN INFECTIVE ENDOCARDITIS. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70095-0] [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: 11/26/2022]
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Hübner S, Höffken M, Oren E, Haseneyer G, Stein N, Graner A, Schmid K, Fridman E. Strong correlation of wild barley (Hordeum spontaneum) population structure with temperature and precipitation variation. Mol Ecol 2009; 18:1523-36. [PMID: 19368652 DOI: 10.1111/j.1365-294x.2009.04106.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this study, we present the genetic analysis of a new collection of wild barley (Hordeum spontaneum) using 42 simple sequence repeat (SSR) markers that represent the seven chromosomes. The Barley1K (B1K) infrastructure consists of 1020 accessions collected in a hierarchical sampling mode (HSM) from 51 sites across Israel and represents the wide adaptive niche of the modern barley's ancestor. According to the genetic structure analysis, the sampled sites can be divided into seven groups, and sampled microsites located on opposing slopes or in different soil types did not show significant genetic differentiation. Although the genetic analysis indicates a simple isolation-by-distance model among the populations, examination of the genetic populations' structure with abiotic parameters in an ordination analysis revealed that the combination of elevation, mid-day temperature and rainfall explains a high proportion of the variance in the principal components analysis. Our findings demonstrate that the current populations have therefore been shaped and distinguished by non-selective forces such as migration; however, we suggest that aridity and temperature gradients played major roles as selective forces in the adaptation of wild barley in this part of the Fertile Crescent. This unique collection is a prelude for the investigation of the molecular basis underlying plant adaptation and responsiveness to harsh environments.
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Affiliation(s)
- S Hübner
- The RH Smith Institute of Plant Sciences and Genetics in Agriculture, The RH Smith Faculty of Agricultural, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
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Cortesi M, Chechik R, Breskin A, Vartsky D, Ramon J, Raviv G, Volkov A, Fridman E. Evaluating the cancer detection and grading potential of prostatic-zinc imaging: a simulation study. Phys Med Biol 2009; 54:781-96. [PMID: 19131675 DOI: 10.1088/0031-9155/54/3/020] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The present work deals with the analysis of prostatic-zinc-concentration images. The goal is to evaluate potential clinically relevant information that can be extracted from such images. In the absence of experimental images, synthetic ones are produced from clinically measured zinc-concentration distributions in certified benign and cancerous tissue samples, classified by the lesion grade. We describe the method for producing the images and model the effect of counting statistics noise. We present in detail the image analysis, which is based on a combination of standard image processing and segmentation tools, optimized for this particular application. The information on lowest zinc value obtained from the image analysis is translated to clinical data such as tumour presence, location, size and grade. Their confidence is evaluated with the help of standard statistical tools such as receiver operating characteristic analysis. The present work predicts a potential for detecting small prostate-cancer lesions, of grade (4+3) and above, with very good specificity and sensitivity. The present analysis further provides data on the pixel size and image counting statistics requested from the trans-rectal probe that will record in vivo prostatic-zinc maps in patients.
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Affiliation(s)
- M Cortesi
- Department of Particle Physics, Weizmann Institute of Science, 76100 Rehovot, Israel.
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Bohlhalter S, Hattori N, Wheaton L, Fridman E, Shamim EA, Garraux G, Hallett M. Gesture subtype-dependent left lateralization of praxis planning: an event-related fMRI study. Cereb Cortex 2008; 19:1256-62. [PMID: 18796430 DOI: 10.1093/cercor/bhn168] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ideomotor apraxia is a disorder mainly of praxis planning, and the deficit is typically more evident in pantomiming transitive (tool related) than intransitive (communicative) gestures. The goal of the present study was to assess differential hemispheric lateralization of praxis production using event-related functional magnetic resonance imaging. Voxel-based analysis demonstrated significant activations in posterior parietal cortex (PPC) and premotor cortex (PMC) association areas, which were predominantly left hemispheric, regardless of whether planning occurred for right or left hand transitive or intransitive pantomimes. Furthermore, region of interest-based calculation of mean laterality index (LI) revealed a significantly stronger left lateralization in PPC/PMC clusters for planning intransitive (LI = -0.49 + 0.10, mean + standard deviation [SD]) than transitive gestures (-0.37 + 0.08, P = 0.02, paired t-tests) irrespective of the hand involved. This differential left lateralization for planning remained significant in PMC (LI = -0.47 + 0.14 and -0.36 + 0.13, mean + SD, P = 0.04), but not in PPC (-0.56 + 0.11 and -0.45 + 0.12, P = 0.11), when both regions were analyzed separately. In conclusion, the findings point to a left-hemispheric specialization for praxis planning, being more pronounced for intransitive gestures in PMC, possibly due to their communicative nature.
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Affiliation(s)
- S Bohlhalter
- Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892-1428, USA
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Cortesi M, Fridman E, Volkov A, Shilstein SS, Chechik R, Breskin A, Vartsky D, Kleinman N, Kogan G, Moriel E, Gladysh V, Huszar M, Ramon J, Raviv G. Clinical assessment of the cancer diagnostic value of prostatic zinc: a comprehensive needle-biopsy study. Prostate 2008; 68:994-1006. [PMID: 18386292 DOI: 10.1002/pros.20766] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND The correlation between Zinc concentration in the prostate's peripheral zone to the onset or presence of malignant process needs to be evaluated in detail. METHODS Zinc concentration was measured in approximately 1-4 mm3 segments of fresh needle-biopsy cores, with X-ray fluorescence, and correlated with the histological findings of these tissue segments. RESULTS Local Zinc concentration is correlated with the presence of cancer (PCa); the higher the Gleason score the greater the Local Zinc depletion. The Zinc value averaged over the entire extracted tissue is specific only to Gleason score 8-9 PCa. The results refer to patients avoiding Zinc-rich supplements since those show elevated prostatic Zinc concentration in identified cancer tissue. A computer simulation analysis of randomly located 0.03-3.3 cm3 lesions, with particular Gleason score and the measured Local Zinc concentration, revealed a potential diagnostic approach definitely superior to PSA, with sensitivity to the tumor grade and with excellent detection capability for Gleason score >6. Further clinical studies have been designed, both on full prostates after radical prostatectomy as well as on biopsy cores at higher resolution, to establish the accuracy of the method for Gleason score = 6. CONCLUSIONS The PCa diagnostic potential of Local Zinc concentration is confirmed and there is indication that the amount of Zinc depletion could be used as a measure of the Gleason score of the tumor. Local Zinc concentration mapping has the potential to improve patient selection for biopsy, biopsy site selection and local therapy (e.g., Cryotherapy, Brachytherapy) site selection.
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Affiliation(s)
- M Cortesi
- Department of Particle Physics, Weizmann Institute of Science, Rehovot, Israel
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Pinthus JH, Daya D, Srigley J, Singh G, Kleinmann N, Fridman E. Construction of tissue micro array from prostate needle biopsies using vertical clustering re-arrangement technique. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.22205] [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: 11/20/2022] Open
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Gilboa Y, Fridman E, Ofir K, Achiron R. Carcinoid tumor of the appendix: ultrasound findings in early pregnancy. Ultrasound Obstet Gynecol 2008; 31:576-578. [PMID: 18393270 DOI: 10.1002/uog.5313] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Ultrasound examination of a woman in early pregnancy with right lower quadrant abdominal pain demonstrated an edematous appendix with amorphous fluid surrounding the appendix. At laparotomy, these findings were confirmed. On pathological evaluation following surgical removal of the appendix a rare case of carcinoid tumor of the appendix was diagnosed. This is the first description of the transvaginal ultrasound features of a carcinoid tumor of the appendix.
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Affiliation(s)
- Y Gilboa
- Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Ramat Gan, Israel.
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Meirow D, Hardan I, Dor J, Fridman E, Elizur S, Ra'anani H, Slyusarevsky E, Amariglio N, Schiff E, Rechavi G, Nagler A, Yehuda DB. Searching for evidence of disease and malignant cell contamination in ovarian tissue stored from hematologic cancer patients. Hum Reprod 2008; 23:1007-13. [DOI: 10.1093/humrep/den055] [Citation(s) in RCA: 275] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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