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Uri O, Alfandari L, Folman Y, Keren A, Smith W, Paz I, Behrbalk E. Acute disc herniation following surgical decompression of lumbar spinal stenosis: a retrospective comparison of mini-open and minimally invasive techniques. J Orthop Surg Res 2023; 18:974. [PMID: 38111077 PMCID: PMC10726635 DOI: 10.1186/s13018-023-04457-2] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 12/09/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND Disc herniation following decompression of lumbar spinal stenosis is a less familiar surgical complication. Previous studies suggested that open lumbar decompression techniques, associated with relative segmental instability especially in the presence of degenerated disc in older patients, are more likely to result in disc herniation compared to minimally invasive techniques. The current study compares the incidence of acute disc herniation following mini-open and minimally invasive decompression of lumbar spinal stenosis. METHODS This was a retrospective study reviewing 563 patients who underwent spinal decompression for symptomatic lumbar stenosis by mini-open bilateral partial laminectomy technique or minimally invasive laminotomy utilizing a tubular system. Demographic and clinical data were collected and compared between the groups. RESULTS Postoperative disc herniation rate was significantly lower in the minimally invasive group with 2 of 237 cases (0.8%) versus 19 of 326 cases (5.8%) in the mini-open group (p = 0.002). This finding was more noticeable following multi-level procedures with no case of postdecompression disc herniation in the minimally invasive group compared to 8 of 39 cases (20.5%) in the mini-open group (p = 0.003). CONCLUSION The incidence of postoperative disc herniation following spinal decompression for symptomatic lumbar stenosis was 5.8% following mini-open bilateral partial laminectomy compared to only 0.8% after minimally invasive laminotomy (p = 0.002). These findings highlight the more extensive nature of mini-open surgery associated with relative segmental instability that poses a greater risk for postoperative disc herniation.
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Affiliation(s)
- Ofir Uri
- Spine Surgery Unit, Orthopedic Department, Hillel Yaffe Medical Center, Ha-Shalom, 38100, Hadera, Israel
| | - Liad Alfandari
- Spine Surgery Unit, Orthopedic Department, Hillel Yaffe Medical Center, Ha-Shalom, 38100, Hadera, Israel.
| | - Yoram Folman
- Spine Surgery Unit, Orthopedic Department, Hillel Yaffe Medical Center, Ha-Shalom, 38100, Hadera, Israel
| | - Amit Keren
- Spine Surgery Unit, Orthopedic Department, Hillel Yaffe Medical Center, Ha-Shalom, 38100, Hadera, Israel
| | - William Smith
- Department of Neurosurgery, University Medical Center, Las Vegas, NV, USA
| | - Inbar Paz
- Spine Surgery Unit, Orthopedic Department, Hillel Yaffe Medical Center, Ha-Shalom, 38100, Hadera, Israel
| | - Eyal Behrbalk
- Spine Surgery Unit, Orthopedic Department, Hillel Yaffe Medical Center, Ha-Shalom, 38100, Hadera, Israel
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Keren A, Bertolini M, Paus R, Gilhar A. 004 Cell-based therapy may be effective in alopecia areata: Preclinical evidence that autologous, peripheral regulatory γdT cells are preventive in human ex vivo and therapeutic in human in vivo models. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.013] [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: 11/19/2022]
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Keren A, Paus R, Gilhar A. 561 Vellus-to-terminal hair follicle reconversion does occur in male pattern balding in a new humanized mouse model of androgenetic alopecia and is promoted by minoxidil and PRP. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.577] [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: 11/19/2022]
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Britva RL, Keren A, Bertolini M, Paus R, Gilhar A. 327 Involvement of ILC1-like innate lymphocytes in human autoimmunity: lessons from alopecia areata. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.340] [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: 11/19/2022]
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Paus R, Keren A, Reich K, Bertolini M, Riethmüller C, Ullmann Y, Gilhar A. 323 A Novel, Stress-Responsive and Clinically Predictive Humanized Mouse Model of Atopic Dermatitis: Autologous Th2-Polarized Lymphocytes Suffice to Induce Characteristic Lesions in Healthy Non-Atopic Human Skin Xenotransplants In Vivo. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.336] [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: 11/19/2022]
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Gilhar A, Keren A, Ullmann Y, Wu J, Paus R. Effect of minoxidil formulations on human scalp skin xenotransplants on SCID mice - a novel pre-clinical in vivo assay for androgenetic alopecia research. Exp Dermatol 2022; 31:980-982. [PMID: 35000229 DOI: 10.1111/exd.14523] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/19/2021] [Accepted: 01/05/2022] [Indexed: 11/27/2022]
Affiliation(s)
- A Gilhar
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.,Rambam Health Care Campus, Haifa, Israel
| | - A Keren
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.,Rambam Health Care Campus, Haifa, Israel
| | - Y Ullmann
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.,Rambam Health Care Campus, Haifa, Israel
| | - J Wu
- Johnson & Johnson Consumer, Inc. Skillman, NJ, USA
| | - R Paus
- Dr. Philipp Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Centre for Dermatology Research, University of Manchester, NIHR Manchester Biomedical Research Centre, Manchester, UK.,Monasterium Laboratory, Münster, Germany
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Britva RL, Keren A, Bertolini M, Paus R, Gilhar A. LB708 ILC1-like innate lymphocytes in human autoimmunity: Lessons from Alopecia Areata. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.07.009] [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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Laufer Britva R, Keren A, Ginzburg A, Ullmann Y, Paus R, Gilhar A. Evidence from a humanized mouse model of androgenetic alopecia that platelet-rich plasma stimulates hair regrowth, hair shaft diameter and vellus-to-terminal hair reconversion in vivo. Br J Dermatol 2021; 185:644-646. [PMID: 33763895 DOI: 10.1111/bjd.20084] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 01/08/2023]
Affiliation(s)
- R Laufer Britva
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel.,Departments of, Plastic and Reconstructive Surgery, Rambam Health Care Campus, Haifa, Israel.,Department of, Dermatology, Rambam Health Care Campus, Haifa, Israel
| | - A Keren
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel.,Departments of, Plastic and Reconstructive Surgery, Rambam Health Care Campus, Haifa, Israel
| | - A Ginzburg
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel
| | - Y Ullmann
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel.,Departments of, Plastic and Reconstructive Surgery, Rambam Health Care Campus, Haifa, Israel
| | - R Paus
- Dr. Philipp Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Centre for Dermatology Research, University of Manchester and NIHR Manchester Biomedical Research Centre, Manchester, UK.,Monasterium Laboratory, Münster, Germany
| | - A Gilhar
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel.,Departments of, Plastic and Reconstructive Surgery, Rambam Health Care Campus, Haifa, Israel
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Potashnikov D, Caspi EN, Pesach A, Kota S, Sokol M, Hanner LA, Barsoum MW, Evans HA, Eyal A, Keren A, Rivin O. Magnetic properties of (Fe 1-xMn x) 2AlB 2 and the impact of substitution on the magnetocaloric effect. Phys Rev Mater 2020; 4:10.1103/PhysRevMaterials.4.084404. [PMID: 38505402 PMCID: PMC10949246 DOI: 10.1103/physrevmaterials.4.084404] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
In this work, we investigate the magnetic structures of (Fe1-xMnx)2AlB2 solid-solution quaternaries in the x = 0 to 1 range using x-ray and neutron diffraction, magnetization measurements, and mean-field theory calculations. While Fe2AlB2 and Mn2AlB2 are known to be ferromagnetic (FM) and antiferromagnetic (AFM), respectively, herein we focused on the magnetic structure of their solid solutions, which is not well understood. The FM ground state of Fe2AlB2 becomes a canted AFM at x ≈ 0.2 , with a monotonically diminishing FM component until x ≈ 0.5 . The FM transition temperature (T C ) decreases linearly with increasing x . These changes in magnetic moments and structures are reflected in anomalous expansions of the lattice parameters, indicating a magnetoelastic coupling. Lastly, the magnetocaloric properties of the solid solutions were explored. For x = 0.2 the isothermal entropy change is smaller by 30% than it is for Fe2AlB2, while the relative cooling power is larger by 6%, due to broadening of the temperature range of the transition.
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Affiliation(s)
- D Potashnikov
- Faculty of Physics, Technion - Israeli Institute of Technology, Haifa 32000, Israel
- Israel Atomic Energy Commission, P.O. Box 7061, Tel-Aviv 61070, Israel
| | - E N Caspi
- Department of Physics, Nuclear Research Centre-Negev, P.O. Box 9001, Beer Sheva 84190, Israel
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - A Pesach
- Department of Physics, Nuclear Research Centre-Negev, P.O. Box 9001, Beer Sheva 84190, Israel
| | - S Kota
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - M Sokol
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
- Department of Materials Science and Engineering, Tel Aviv University, Ramat Aviv 6997801, Israel
| | - L A Hanner
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - M W Barsoum
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - H A Evans
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - A Eyal
- Faculty of Physics, Technion - Israeli Institute of Technology, Haifa 32000, Israel
| | - A Keren
- Faculty of Physics, Technion - Israeli Institute of Technology, Haifa 32000, Israel
| | - O Rivin
- Department of Physics, Nuclear Research Centre-Negev, P.O. Box 9001, Beer Sheva 84190, Israel
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Alam M, Bertolini M, Gherardini J, Keren A, Ponce L, Chéret J, Alenfall J, Dunér P, Nilsson AH, Gilhar A, Paus R. An osteopontin-derived peptide inhibits human hair growth at least in part by decreasing fibroblast growth factor-7 production in outer root sheath keratinocytes. Br J Dermatol 2019; 182:1404-1414. [PMID: 31487385 DOI: 10.1111/bjd.18479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Given that unwanted hair growth (hirsutism, hypertrichosis) can cause major psychological distress, new pharmacological treatment strategies with safe and effective hair growth inhibitors that do not destroy the hair follicle (HF) and its stem cells need to be developed. OBJECTIVES To establish if osteopontin-derived fragments may modulate human hair growth given that human HFs express the multifunctional, immunomodulatory glycoprotein, osteopontin. METHODS Our hypothesis was tested ex vivo and in vivo by using a newly generated, toxicologically well-characterized, modified osteopontin-derived peptide (FOL-005), which binds to the HF. RESULTS In organ-cultured human HFs and scalp skin, and in human scalp skin xenotransplants onto SCID mice, FOL-005 treatment (60 nmol L-1 to 3 μmol L-1 ) significantly promoted premature catagen development without reducing the number of keratin 15-positive HF stem cells or showing signs of drug toxicity. Genome-wide DNA microarray, quantitative reverse-transcriptase polymerase chain reaction and immunohistochemistry revealed decreased expression of the hair growth promoter, fibroblast growth factor-7 (FGF7) by FOL-005, while cotreatment of HFs with recombinant FGF7 partially abrogated FOL-005-induced catagen promotion. CONCLUSIONS With caveats in mind, our study identifies this osteopontin-derived peptide as an effective, novel inhibitory principle for human hair growth ex vivo and in vivo, which deserves systematic clinical testing in hirsutism and hypertrichosis. What's already known about this topic? The treatment of unwanted hair growth (hypertrichosis, hirsutism) lacks pharmacological intervention, with only few and often unsatisfactory treatments available. Osteopontin is prominently expressed in human HFs and has been reported to be elevated during catagen in the murine hair cycle. What does this study add? We tested the effects on hair growth of a novel, osteopontin-derived fragment (FOL-005) ex vivo and in vivo. In human hair follicles, high-dose FOL-005 significantly reduces hair growth both ex vivo and in vivo. What is the translational message? High-dose FOL-005 may provide a new therapeutic opportunity as a treatment for unwanted hair growth.
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Affiliation(s)
- M Alam
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany.,Mediteknia Skin & Hair Lab, Las Palmas de Gran Canaria, Spain.,Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain
| | - M Bertolini
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | - J Gherardini
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | - A Keren
- Laboratory for Skin Research, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - L Ponce
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | - J Chéret
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | | | - P Dunér
- Follicum AB, Lund, Sweden.,Department of Clinical Sciences, Lund University, Lund, Sweden
| | - A H Nilsson
- Follicum AB, Lund, Sweden.,Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - A Gilhar
- Laboratory for Skin Research, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - R Paus
- Centre for Dermatology Research, University of Manchester and NIHR Manchester Biomedical Research Centre, Manchester, U.K.,Dr. Philip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A
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Laufer Britva R, Keren A, Paus R, Gilhar A. Apremilast and tofacitinib exert differential effects in the humanized mouse model of alopecia areata. Br J Dermatol 2019; 182:227-229. [DOI: 10.1111/bjd.18264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- R. Laufer Britva
- Skin Research Laboratory Rappaport Faculty of Medicine Technion – Israel Institute of Technology Haifa Israel
- Rambam Health Care Campus Haifa Israel
- Department of Dermatology Rambam Health Care Campus Haifa Israel
| | - A. Keren
- Skin Research Laboratory Rappaport Faculty of Medicine Technion – Israel Institute of Technology Haifa Israel
- Rambam Health Care Campus Haifa Israel
| | - R. Paus
- Dr. Philipp Frost Department of Dermatology and Cutaneous Surgery Miller School of Medicine University of Miami Miami FL U.S.A
- Centre for Dermatology Research University of Manchester and NIHR Manchester Biomedical Research Centre Manchester U.K
| | - A. Gilhar
- Skin Research Laboratory Rappaport Faculty of Medicine Technion – Israel Institute of Technology Haifa Israel
- Rambam Health Care Campus Haifa Israel
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Laufer R, Keren A, Paus R, Gilhar A. 431 Innate lymphoid cells type 1 may be new, non-antigen-specific player in the pathogenesis of alopecia areata. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.433] [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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13
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Keren A, Riethmüller C, Ullmann Y, Paus R, Gilhar A. 661 Development of a novel humanized mouse model for atopic dermatitis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Maurice-Dror C, Litvak M, Keren A, Akerman S, Brenner B, Haim N, Nadir Y. Is it appropriate to use a fixed prophylactic dose of enoxaparin for hospitalized cancer patients? Results from a prospective tertiary referral single center study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy300.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gotsman I, Shauer A, Zwas DR, Lotan C, Keren A. P896Low serum albumin: a significant predictor of increased mortality and cardiac related hospitalizations in patients with heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- I Gotsman
- Hadassah University Hospital, Jerusalem, Israel
| | - A Shauer
- Hadassah University Hospital, Jerusalem, Israel
| | - D R Zwas
- Hadassah University Hospital, Jerusalem, Israel
| | - C Lotan
- Hadassah University Hospital, Jerusalem, Israel
| | - A Keren
- Hadassah University Hospital, Jerusalem, Israel
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Keren A, Yndriago L, Izeta A, Gerovska D, Araúzo-Bravo M, Paus R, Gilhar A. 1429 VEGF mediates rejuvenation of aged human skin xenografts in young mice. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1447] [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]
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Paus R, Keren A, Gilhar A. 962 Development of a novel humanized mouse model for atopic dermatitis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.974] [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: 11/24/2022]
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Gilhar A, Keren A, Schrum A, Paus R. 063 Activated ILC3 cells suffice to induce psoriasis in human skin in vivo. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.067] [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: 10/17/2022]
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Bertolini M, Alam M, Gherardini J, Keren A, Ponce L, Alenfall J, Dunér P, Nilsson A, Gilhar A, Paus R. 1371 FGF7-dependent inhibition of human hair growth byan osteopontin-derived peptide: A novel solution for hirsutism and hypertrichosis? J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1388] [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]
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Ouzan E, Duani Y, Shani M, Gutman O, Keren A, Lotan C, Gotsman I. The Impact of heart failure management in a specialized heart failure center within a primary care clinic on clinical outcome inpatients with chronic heart failure. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2017.11.096] [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: 10/18/2022]
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Gilhar A, Keren A, Shemer A, Ginzburg A, Ullmann Y, Paus R. 311 Group 3 innate lymphoid cells (ILC3) induce psoriasiform lesions in human skin xenotransplants in vivo. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.506] [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: 10/18/2022]
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Gilhar A, Keren A, Ullmann Y, Paus R. 299 Development of a novel, perceived stress-sensitive humanized mouse model of atopic dermatitis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.494] [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: 10/18/2022]
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Moyal L, Yehezkel S, Gorovitz B, Keren A, Gilhar A, Lubin I, Sherman S, Hodak E. Oncogenic role of microRNA-155 in mycosis fungoides: an in vitro and xenograft mouse model study. Br J Dermatol 2017; 177:791-800. [PMID: 28256712 DOI: 10.1111/bjd.15422] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND MicroRNA (miR)-155 contributes to the proliferation of mycosis fungoides (MF) in vitro and is upregulated in tumours of MF compared with early MF lesions. OBJECTIVES To investigate the contribution of miR-155 to the cancerous phenotype and drug resistance of MF/Sézary cell lines. METHODS miR-155 was inhibited in MF cell lines (MyLa and MJ) by transduction of miRZip anti-miR-155, and overexpressed in Hut78 cells by transduction of miRVec-miR-155; empty plasmids served as controls. Cells were analysed for response to inducers of apoptosis and cell-cycle arrest, using fluorescence-activated cell sorting. Transduced MyLa cells were subcutaneously injected into severe combined immunodeficient mice, and tumours were analysed immunohistochemically and for final size. RESULT MyLa and MJ cells expressed a high level of miR-155; Hut78 cells expressed a low level. MF cell lines stably expressing miR-155 inhibitor showed increased G2/M arrest in response to N-p-tolyl-2-(3,4,5-trimethoxyphenyl quinazolin-4-amine) (SL111), an inducer of cell-cycle arrest, followed by increased apoptosis. Additionally, they showed increased apoptosis in response to suberoylanilide hydroxamic acid (SAHA). Tumours formed in mice from injected anti-miR-155-expressing MyLa cells had a significantly lower volume and higher occurrence of apoptosis than controls. Stable overexpression of miR-155 in Hut78 cells had no effect. CONCLUSIONS Oncogenic miR-155 appears to contribute to the cancerous phenotype of MyLa and MJ cells, but not of Hut78 cells, by interrupting activation of the G2/M checkpoint in response to SL111, and decreasing apoptosis in response to SL111 and SAHA, thereby facilitating tumour growth. These findings have implications for the potential development of novel therapeutic modalities for MF incorporating miR-155 inhibitors.
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Affiliation(s)
- L Moyal
- Department of Dermatology, Tel Aviv University, Tel Aviv, Israel.,Laboratory for Molecular Dermatology, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
| | - S Yehezkel
- Department of Dermatology, Tel Aviv University, Tel Aviv, Israel.,Laboratory for Molecular Dermatology, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
| | - B Gorovitz
- Department of Dermatology, Tel Aviv University, Tel Aviv, Israel.,Laboratory for Molecular Dermatology, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
| | - A Keren
- Laboratory for Skin Research, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - A Gilhar
- Laboratory for Skin Research, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.,Flieman Medical Center, Haifa, Israel
| | - I Lubin
- Core Facility, Felsenstein Medical Research Center, Rabin Medical Center, Petach Tikva, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Sherman
- Department of Dermatology, Tel Aviv University, Tel Aviv, Israel.,Laboratory for Molecular Dermatology, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
| | - E Hodak
- Department of Dermatology, Tel Aviv University, Tel Aviv, Israel.,Laboratory for Molecular Dermatology, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
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Gilhar A, Hawkes J, Keren A, Krueger J, Guttman-Yassky E. 885 Human and mouse experiments identify a role for Th1, Th2, and IL-23 cytokine pathways in the pathogenesis of alopecia areata. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.911] [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: 10/19/2022]
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Engel-Yeger B, Keren A, Berkovich Y, Sarfaty E, Merom L. The role of physical status versus mental status in predicting the quality of life of patients with lumbar disk herniation. Disabil Rehabil 2016; 40:302-308. [PMID: 27866425 DOI: 10.1080/09638288.2016.1253114] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE To explore the role of physical status versus mental status in predicting the quality of life (QOL) of patients with lumbar disk herniation (LDH). METHOD In this correlative study 51 patients with LDH were recruited in their conservative stage of treatment. After profiling their physical status, all participants reported about pain level (according to VAS), pain perception using the Pain Catastrophizing Scale (PCS), and disability level (according to Oswestry Low Back Pain Disability Questionnaire). Their mental status was evaluated using the Spielberger's State-Trait Anxiety Inventory (STAI) and the Beck Depression Inventory (BDI-II). Their QOL was evaluated by the World Health Organization Quality of Life Questionnaire, brief version (WHOQOL-BREF). RESULTS Physical status/disability level correlated with anxiety and depression. While Physical status predicted physical QOL, mental status, and mainly anxiety and depression were the significant predictors of psychological, social, and environmental QOL. CONCLUSIONS Mental status may play a significant role in reducing most QOL domains among patients with LDH. The evaluation and intervention process should consider both physical and mental status and their relation to the person's QOL. Since QOL is a major parameter in determining intervention type and success this elaborated perspective may contribute to the intervention planning and outcomes. Implications for rehabilitaion A significant mental distress may accompany the physical disability of patients with LDH. The role of this mental distress in reducing the QOL of patients with LDH may be greater than that of their physical disability. The evaluation and intervention for patients with LDH should refer to both physical and mental status and explore their impacts on quality of life in order to elevate intervention success.
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Affiliation(s)
- Batya Engel-Yeger
- a Department of Occupational Therapy, Faculty of Social Welfare and Health Sciences , University of Haifa , Haifa , Israel
| | - Amit Keren
- b Rambam Health Care Campus , Orthopedic Spine Unit , Haifa , Israel
| | - Yaron Berkovich
- b Rambam Health Care Campus , Orthopedic Spine Unit , Haifa , Israel
| | - Elad Sarfaty
- c The Ruth and Bruce Rappaport Faculty of Medicine , Technion , Haifa , Israel
| | - Lior Merom
- b Rambam Health Care Campus , Orthopedic Spine Unit , Haifa , Israel.,d Assuta Medical Center , Haifa , Israel
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Nangrahary M, Chieng D, Keren A. Systemic Mastocytosis as a Rare Cause of Pulseless Electrical Activity (PEA) Cardiac Arrest and Recurrent Syncope. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.213] [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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Abu-Shakra M, Keren A, Livshitz I, Delbar V, Bolotin A, Sukenik S, Kanat-Maymon Y. Sense of coherence and its impact on quality of life of patients with systemic lupus erythematosus. Lupus 2016; 15:32-7. [PMID: 16482743 DOI: 10.1191/0961203306lu2255oa] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The sense of coherence (SOC) construct refers to a global orientation, which significantly determines the link between stressors, coping with disease and health. The aim of this work was to assess possible associations between SOC and quality of life (QOL) scores among women with SLE. Sixty consecutive SLE women and 88 healthy women were included in the study. QOL was assessed using the SF-36 and the WHO QOL-Bref scales. The SOC has three main sub-scales: comprehensibility, manageability and meaningfulness. Regression analyses were used to study associations between various parameters of SF-36, WHO QOL-Bref, SOC, SLEDAI, indices of end organ damage (SDI), and demographic variables. Mean SLEDAI and SDI scores were 4.5 (SD = 5.6) and 1.29 (SD = 2). SLE patients had significantly lower scores for all individual and summary sub-scales in the two QOL questionnaires compared with controls. SLE patients had significantly lower scores for the general, comprehensibility and meaningfulness sub-scales of SOC. No significant correlation was seen between SOC scores and measures of disease activity or end-organ damage. A strong linear correlation was seen between the scores of SOC, general WHO QOL-Bref, and the mental and physical component summary (MCS & PCS) scores of SF36. Age, SOC and SDI significantly affected the PCS score. SOC was the only variable independently associated with MCS. Education and SOC were significantly associated with the general WHO QOL-Bref. Age, education, SDI and SOC were independently associated with QOL of women with SLE.
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Affiliation(s)
- M Abu-Shakra
- Autoimmune Rheumatic Diseases Unit, Department of Medicine D, Soroka University Medical Center and the Faculty of Health Sciences, Ben Gurion University, Beer-Sheva, Israel.
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Sarig O, Fried L, Megal L, Keren A, Vodo D, Hershkovitz D, Uitto J, Gilhar A, Sprecher E. 541 EGR1 as a molecular target for the treatment of skin inflammatory disease. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.579] [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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Devir-Wolfman AH, Khachatryan B, Gautam BR, Tzabary L, Keren A, Tessler N, Vardeny ZV, Ehrenfreund E. Short-lived charge-transfer excitons in organic photovoltaic cells studied by high-field magneto-photocurrent. Nat Commun 2014; 5:4529. [DOI: 10.1038/ncomms5529] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 06/26/2014] [Indexed: 11/09/2022] Open
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31
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Keren A, Berkovich Y, Merom L. [Lumbar nucleoplasty]. Harefuah 2014; 153:407-432. [PMID: 25189032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Low back pain (LBP) is one of the common reasons for people to seek treatment from a physician. A familiar cause of LBP and radicular pain is disc bulge or protrusion. The treatment for this indication is diverse and suited to the type pathology and its severity. The treatment can be conservative ranging from a diversity of minimal invasive surgical methods to an open discectomy. The classification of disc herniation is based on the severity of the bulge, whereby the lowest degree is protrusion/ prolapse, then extrusion and the most severe level is sequestered disc. This classification is important when considering the treatment options. One of the known possible treatments for disc protrusion is Nucleoplasty or disc Coblation. This percutaneous surgical method is used to treat discogenic back pain and radicular pain. This method is based on reducing disc volume by using radio frequency energy. During the last decade, many medical centers worldwide used this procedure. In recent years, this method is rising in popuLarity due to its percutaneous approach, low complication rate, good results at the post surgical stage reflecting improvement in symptoms and facilitating rapid return to normal life. The accepted indications for Nucleoplastia are discogenic radicular pain, contained disc herniation according to an MRI scan with intact annulus fibrosus, insufficient response to conservative treatment and absence of a medical emergency as in the case of Cauda Equina syndrome. Patient selection according to those parameters is very important. Today this surgical method is still controversial. In recent years many studies regarding Nucleoplasty have been published, although more research is necessary in order to evaluate long term results and tailor it to the appropriate patient and pathology.
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32
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Saharov G, Nadir Y, Zoran I, Keren A, Brenner B, Shochat T. Hemostatic markers in shift working female nurses. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.646] [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: 10/25/2022]
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Keren A, Berkovich Y, Soudry M. [Sport activity after hip and knee arthroplasty]. Harefuah 2013; 152:649-688. [PMID: 24416822] [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: 06/03/2023]
Abstract
Joint arthroplasty is one of the commonest surgical procedures in orthopedic surgery. In recent years there was an increase in the number of procedures, patient satisfaction and implant survival. Originally, these operations were designed for old patients in order to relieve pain and to enable ambulation. Over the past few years, these operations have become common in younger patients which desire to return to activity, including sports activities. The importance of physical activity is a well known fact. In recent years it became clear that with the proper physical activity the outcomes of the operations are better. There are several types of arthroplasty. Many factors influence the outcome of the operation apart from the post-surgery physical activity. These factors include patient factors, surgical technique and type of arthroplasty. This review summarizes the recommendations for sports activities after hip and knee arthroplasties. These activities are evaluated according to surgeons' recommendations, stress applied on the implant and long term outcomes. The recommended sports activities after joint arthroplasties are walking, swimming and cycling. Soccer, basketball and jogging are not advised. Tennis, downhill skiing and horse riding are recommended with previous experience. There are many more sports activities that patients can participate in, and it is important that the patient discuss the different options prior to the operation. Since these operations are so common, many non-orthopedic physicians encounter these patients in their practice. They should be acquainted with the recommendations for sports activities and encourage them.
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Affiliation(s)
- Amit Keren
- Department of Orthopedics A, Rambam Health Care Campus, Haifa.
| | | | - Michael Soudry
- Department of Orthopedics A, Rambam Health Care Campus, Haifa
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McElwee KJ, Gilhar A, Tobin DJ, Ramot Y, Sundberg JP, Nakamura M, Bertolini M, Inui S, Tokura Y, Jr LEK, Duque-Estrada B, Tosti A, Keren A, Itami S, Shoenfeld Y, Zlotogorski A, Paus R. What causes alopecia areata? Exp Dermatol 2013; 22:609-26. [PMID: 23947678 PMCID: PMC4094373 DOI: 10.1111/exd.12209] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The pathobiology of alopecia areata (AA), one of the most frequent autoimmune diseases and a major unsolved clinical problem, has intrigued dermatologists, hair biologists and immunologists for decades. Simultaneously, both affected patients and the physicians who take care of them are increasingly frustrated that there is still no fully satisfactory treatment. Much of this frustration results from the fact that the pathobiology of AA remains unclear, and no single AA pathogenesis concept can claim to be universally accepted. In fact, some investigators still harbour doubts whether this even is an autoimmune disease, and the relative importance of CD8(+) T cells, CD4(+) T cells and NKGD2(+) NK or NKT cells and the exact role of genetic factors in AA pathogenesis remain bones of contention. Also, is AA one disease, a spectrum of distinct disease entities or only a response pattern of normal hair follicles to immunologically mediated damage? During the past decade, substantial progress has been made in basic AA-related research, in the development of new models for translationally relevant AA research and in the identification of new therapeutic agents and targets for future AA management. This calls for a re-evaluation and public debate of currently prevalent AA pathobiology concepts. The present Controversies feature takes on this challenge, hoping to attract more skin biologists, immunologists and professional autoimmunity experts to this biologically fascinating and clinically important model disease.
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Affiliation(s)
- K. J. McElwee
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC, Canada
| | - A. Gilhar
- Laboratory for Skin, Research, Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel Marta Bertolini
| | - D. J. Tobin
- Centre for Skin Sciences, School of Life Sciences, University of Bradford, Bradford, West Yorkshire, BD7 1DP, UK
| | - Y. Ramot
- Department of Dermatology, Hadassah- Hebrew University Medical Center, Jerusalem 91120, Israel
| | - J. P. Sundberg
- The Jackson Laboratory, Bar Harbor, ME, USA; Division of Dermatology, Skin Disease Research Center, Vanderbilt University, Nashville, TN, USA
| | - M. Nakamura
- Department of Dermatology, University of Occupational and Environmental Health, Kitakyushu, Japan Yoshiki Tokura
| | - M. Bertolini
- Department of Dermatology, University of Lübeck, Germany Yehuda Shoenfeld
| | - S. Inui
- Department of Regenerative Dermatology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Y. Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - L. E. King Jr
- The Jackson Laboratory, Bar Harbor, ME, USA; Division of Dermatology, Skin Disease Research Center, Vanderbilt University, Nashville, TN, USA
| | - B. Duque-Estrada
- Instituto de Dermatologia Prof. Rubem David Azulay, Rio de Janeiro, Brazil Antonella Tosti
| | - A Tosti
- Department of Dermatology, University of Miami, Miami, FL, USA
| | - A. Keren
- Laboratory for Skin, Research, Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel Marta Bertolini
| | - S. Itami
- Department of Regenerative Dermatology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Y. Shoenfeld
- Center for Autoimmune Diseases, Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - A. Zlotogorski
- Department of Dermatology, Hadassah- Hebrew University Medical Center, Jerusalem 91120, Israel
| | - R. Paus
- Department of Dermatology, University of Lübeck, Germany; Institute of Inflammation and Repair, University of Manchester, Manchester, UK ,
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Diamant E, Lahmi B, Keren A, Barnea A, Marcus H, Cohen S, Zichel R. Development of serotype-specific monoclonal antibodies against botulinum neurotoxins A, B and E, based on a trivalent immunization protocol and simultaneous differential robotic screen. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.121] [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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36
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Felner I, Tsindlekht MI, Drachuck G, Keren A. Anisotropy of the upper critical fields and the paramagnetic Meissner effect in La1.85Sr0.15CuO4 single crystals. J Phys Condens Matter 2013; 25:065702. [PMID: 23315336 DOI: 10.1088/0953-8984/25/6/065702] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Optimally doped La(1.85)Sr(0.15)CuO(4) single crystals have been investigated by dc and ac magnetic measurements. These crystals have rectangular needle-like shapes with the long needle axis parallel to the crystallographic c axis (c-crystal) or parallel to the basal planes (a-crystal). In both crystals, the temperature dependence of the upper critical fields (H(C2)) and the surface critical field (H(C3)) were measured. The H-T phase diagram is presented. Close to T(C) = 35 K, for the c-crystal, γ(C) = H(C3)(c)/H(C2)(c) = 1.80(2), whereas for the a-crystal the γ(a) = H(C3)(a)/H(C2)(a) = 4.0(2) obtained is much higher than 1.69, predicted by the ideal mathematical model. At low applied dc fields, positive field-cooled branches known as the 'paramagnetic Meissner effect' (PME) are observed; their magnitude is inversely proportional to H. The anisotropic PME is observed in both a- and c-crystals, only when the applied field is along the basal planes. It is speculated that the high γ(a) and the PME are connected to each other.
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Affiliation(s)
- I Felner
- Racah Institute of Physics, The Hebrew University, Jerusalem, Israel.
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37
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Razzoli E, Drachuck G, Keren A, Radovic M, Plumb NC, Chang J, Huang YB, Ding H, Mesot J, Shi M. Evolution from a nodeless gap to d(x(2)-y(2))-wave in underdoped La(2-x)Sr(x)CuO4. Phys Rev Lett 2013; 110:047004. [PMID: 25166196 DOI: 10.1103/physrevlett.110.047004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Indexed: 06/03/2023]
Abstract
Using angle-resolved photoemission spectroscopy (ARPES), it is revealed that the low-energy electronic excitation spectra of highly underdoped superconducting and nonsuperconducting La(2-x)Sr(x)CuO(4) cuprates are gapped along the entire underlying Fermi surface at low temperatures. We show how the gap function evolves to a d(x(2)-y(2)) form with increasing temperature or doping, consistent with the vast majority of ARPES studies of cuprates. Our results provide essential information for uncovering the symmetry of the order parameter(s) in strongly underdoped cuprates, which is a prerequisite for understanding the pairing mechanism and how superconductivity emerges from a Mott insulator.
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Affiliation(s)
- E Razzoli
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - G Drachuck
- Department of Physics, Technion, Haifa 32000, Israel
| | - A Keren
- Department of Physics, Technion, Haifa 32000, Israel
| | - M Radovic
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland and Institut de la Matiere Complexe, EPF Lausanne, CH-1015 Lausanne, Switzerland
| | - N C Plumb
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - J Chang
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland and Institut de la Matiere Complexe, EPF Lausanne, CH-1015 Lausanne, Switzerland
| | - Y-B Huang
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - H Ding
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - J Mesot
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland and Institut de la Matiere Complexe, EPF Lausanne, CH-1015 Lausanne, Switzerland
| | - M Shi
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
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Saharov G, Nadir Y, Keren A, Brenner B, Shochat T. P-054 Hemostatic markers and sleep quality among shift work and day work female nurses. Thromb Res 2013. [DOI: 10.1016/s0049-3848(13)70100-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Perrin MJ, Green MS, Redpath CJ, Nery PB, Keren A, Beanlands RS, Birnie DH. Greater response to cardiac resynchronization therapy in patients with true complete left bundle branch block: a PREDICT substudy. Europace 2011; 14:690-5. [DOI: 10.1093/europace/eur381] [Citation(s) in RCA: 25] [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: 11/14/2022] Open
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Perrin M, Green M, Redpath C, Nery P, Keren A, Birnie D. 560 R in V1 predicts response to cardiac resynchronization therapy. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.464] [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: 10/16/2022] Open
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41
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Chugh S, Fortinsky K, Rutberg J, Keren A, Nery P, Gollob M, Davis D. 381 Autonomic triggered atrial fibrillation is common and reduces patients' quality of life. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.321] [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: 11/27/2022] Open
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42
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Abstract
We present transverse field muon spin rotation/relaxation measurements on single crystals of the spin-1/2 kagome antiferromagnet Herbertsmithite. We find that the spins are more easily polarized when the field is perpendicular to the kagome plane. We demonstrate that the difference in magnetization between the different directions cannot be accounted for by Dzyaloshinskii-Moriya-type interactions alone and that anisotropic axial interaction is present.
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Affiliation(s)
- Oren Ofer
- TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T2A3, Canada.
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Bennett-Back O, Keren A, Zelnik N. Attention-deficit hyperactivity disorder in children with benign epilepsy and their siblings. Pediatr Neurol 2011; 44:187-92. [PMID: 21310334 DOI: 10.1016/j.pediatrneurol.2010.10.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Revised: 08/27/2010] [Accepted: 10/04/2010] [Indexed: 11/30/2022]
Abstract
This prospective study explores the prevalence and characteristics of attention-deficit hyperactivity disorder in children with benign epilepsy, compared with its prevalence in their siblings. Among 40 patients with benign epilepsy, 28 (70%) were diagnosed with attention-deficit hyperactivity disorder: 19 with the inattentive type, one with the hyperactive type, and eight with the combined type. In the control group of 12 siblings, only two (16.7%) were diagnosed with attention-deficit hyperactivity disorder (P<0.03). A trend toward an increased risk for attentional difficulties was evident in children whose seizures were more resistant and required more than one antiepileptic drug for seizure control. Children with more epileptiform features in their electroencephalograms were also more subject to signs of attention deficit hyperactivity disorder. Larger scale studies are required to validate our findings.
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Affiliation(s)
- Odeya Bennett-Back
- Child Neurology and Development Center, Department of Pediatrics, Carmel Medical Center and Rappaport Faculty of Medicine, Technion, Haifa, Israel
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44
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Dickstein K, Cohen-Solal A, Filippatos G, McMurray JJ, Ponikowski P, Poole-Wilson PA, Stromberg A, van Veldhuisen DJ, Atar D, Hoes AW, Keren A, Mebazaa A, Nieminen M, Priori SG, Swedberg K. Corrigendum to: ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure 2008. The Task Force for the Diagnosis and Treatment of Acute and Chronic Heart Failure 2008 of the European Society of Cardiology. Developed in collaboration with the Heart Failure Association of the ESC (HFA) and endorsed by the European Society of Intensive Care Medicine (ESICM) [Eur Heart J 2008;29:2388-2442]. Eur Heart J 2010. [DOI: 10.1093/eurheartj/ehq027] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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45
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Elliott P, Andersson B, Arbustini E, Bilinska Z, Cecchi F, Charron P, Dubourg O, Kuhl U, Maisch B, McKenna WJ, Monserrat L, Pankuweit S, Rapezzi C, Seferovic P, Tavazzi L, Keren A. What do tachycardiomyopathy belong to?: reply. Eur Heart J 2008. [DOI: 10.1093/eurheartj/ehn093] [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: 11/13/2022] Open
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Abstract
OBJECTIVE Advanced age is an indication for anticoagulation in patients with atrial fibrillation though it is not clear that elderly patients have a higher prevalence of left atrial thrombus. The purpose of this study was to clarify whether advanced age represents a risk for left atrial thrombus formation irrespective of other clinical variables. DESIGN Observational study in patients with atrial fibrillation undergoing a transoesophageal echo scan for various clinical indications. SETTING University-affiliated cardiology service in a general hospital. PATIENTS Results are reported in 381 patients, 257 aged less than 75 years (Gr. A) and 124 aged 75 years or more (Gr. B). RESULTS Thrombi were detected by TOE in 30 patients (7.9%), 21 from group A and nine from group B (8.1% vs 7.2%, p = NS). No thrombi were detected in patients with lone atrial fibrillation. Among patients with either valvular or nonvalvular atrial fibrillation, left atrial thrombus presence was not related to age or anticoagulation status. CONCLUSIONS In patients with atrial fibrillation, age itself does not predict the presence of left atrial thrombus and the only identifiable risk factor seems to be the existing cardiac pathology.
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Affiliation(s)
- B Mazouz
- The Heiden Department of Cardiology, Bikur Cholim Hospital, Jerusalem, Israel
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47
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Elliott P, Andersson B, Arbustini E, Bilinska Z, Cecchi F, Charron P, Dubourg O, Kuhl U, Maisch B, McKenna WJ, Monserrat L, Pankuweit S, Rapezzi C, Seferovic P, Tavazzi L, Keren A. The new European definition of cardiomyopathies: which space for muscle dystrophies?: reply. Eur Heart J 2008. [DOI: 10.1093/eurheartj/ehn188] [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: 11/13/2022] Open
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48
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Shah JS, Esteban MTT, Thaman R, Sharma R, Mist B, Pantazis A, Ward D, Kohli SK, Page SP, Demetrescu C, Sevdalis E, Keren A, Pellerin D, McKenna WJ, Elliott PM. Prevalence of exercise-induced left ventricular outflow tract obstruction in symptomatic patients with non-obstructive hypertrophic cardiomyopathy. Heart 2007; 94:1288-94. [DOI: 10.1136/hrt.2007.126003] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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49
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Keren A, Shafir O, Shimshoni E, Marvaud V, Bachschmidt A, Long J. Experimental estimates of dephasing time in molecular magnets. Phys Rev Lett 2007; 98:257204. [PMID: 17678053 DOI: 10.1103/physrevlett.98.257204] [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] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Indexed: 05/16/2023]
Abstract
Muon spin relaxation measurements in isotropic molecular magnets (MM) with a spin value S ranging from 7/2 to 27/2 are used to determine the magnitude and origin of dephasing time tau(phi) of molecular magnets. It is found that tau(phi) approximately 10 nsec with no S or ligand dependence. This indicates a nuclear origin for the stochastic field. Since tau(phi) is a property of the environment, we argue that it is a number common to similar types of MM. Therefore, tau(phi) is shorter than the Zener and tunneling times of anisotropic MM such as Fe(8) or Mn(4) for standard laboratory sweep rates. Our findings call for a stochastic Landau-Zener theory in this particular case.
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Affiliation(s)
- Amit Keren
- Physics Department, Technion-Israel Institute of Technology, Haifa 32000, Israel
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Keren A, Hayes HM, O'Driscoll G. Late Humoral Rejection in a Cardiac Transplant Recipient Treated With the Anti-CD20 Monoclonal Antibody Rituximab. Transplant Proc 2006; 38:1520-2. [PMID: 16797348 DOI: 10.1016/j.transproceed.2006.03.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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: 12/21/2005] [Indexed: 10/24/2022]
Abstract
Humoral or vascular rejection results from a B cell-mediated production of immunoglobulin (Ig) G antibody against a transplanted organ, producing immune complex deposition on the vascular endothelium, activation of the complement cascade, generation of endothelial dysfunction, and regional ischemic injury. Antibody-mediated rejection, which may be accompanied by hemodynamic compromise, is associated with reduced long-term graft survival. Patients believed to be at an increased risk of developing humoral rejection include women, particularly those with high levels of panel reactive antibodies, cytomegalovirus seropositivity, and positive cross matches, and subjects with prior sensitization to OKT3. Treatment options for humoral rejection include plasmapheresis to lower the circulating immunoglobulin levels followed by high-dose cyclophosphamide to reduce the B-cell population. Other modalities include total lymphoid irradiation, photophoresis, splenectomy, and, for treatment failures, retransplantation. Rituximab is a chimeric humanized monoclonal antibody directed against the pan B-cell surface molecule, CD20. It is approved for the treatment of low-grade B-cell non-Hodgkin's lymphoma. It has also been used successfully for the treatment of posttransplant B-cell lymphoproliferative disease. We report a case of late humoral rejection successfully treated with rituximab.
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Affiliation(s)
- A Keren
- Advanced Heart Failure and Cardiac Transplant Service, Royal Perth Hospital, Perth, Western Australia.
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