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Wagner S, Kahl G, Melnyk R, Baumketner A. On the lattice ground state of densely packed hard ellipses. J Chem Phys 2024; 160:151101. [PMID: 38624111 DOI: 10.1063/5.0203311] [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] [Received: 02/12/2024] [Accepted: 03/22/2024] [Indexed: 04/17/2024] Open
Abstract
Among lattice configurations of densely packed hard ellipses, Monte Carlo simulations are used to identify the so-called parallel and diagonal lattices as the two favorable states. The free energies of these two states are computed for several system sizes employing the Einstein crystal method. An accurate calculation of the free energy difference between the two states reveals the parallel lattice as the state with the lowest free energy. The origin of the entropic difference between the two states is further elucidated by assessing the roles of the translational and rotational degrees of freedom.
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Affiliation(s)
- S Wagner
- Institute for Theoretical Physics, TU Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
| | - G Kahl
- Institute for Theoretical Physics, TU Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
| | - R Melnyk
- Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, 1 Svientsitsky Str., Lviv UA-79011, Ukraine
| | - A Baumketner
- Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, 1 Svientsitsky Str., Lviv UA-79011, Ukraine
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Afzal F, Spieker K, Hurck P, Abt S, Achenbach P, Adlarson P, Ahmed Z, Akondi CS, Annand JRM, Arends HJ, Bashkanov M, Beck R, Biroth M, Borisov N, Braghieri A, Briscoe WJ, Cividini F, Collicott C, Costanza S, Denig A, Dieterle M, Downie EJ, Drexler P, Fegan S, Gardner S, Ghosal D, Glazier DI, Gorodnov I, Gradl W, Gurevich D, Heijkenskjöld L, Hornidge D, Huber GM, Kashevarov VL, Kay SJD, Korolija M, Krusche B, Lazarev A, Livingston K, Lutterer S, MacGregor IJD, Macrae RG, Manley DM, Martel PP, Miskimen R, Mocanu M, Mornacchi E, Mullen C, Neganov A, Neiser A, Oberle M, Ostrick M, Otte PB, Paudyal D, Pedroni P, Powell A, Reicherz G, Rostomyan T, Sfienti C, Sokhoyan V, Steffen O, Strakovsky II, Strub T, Supek I, Thiel A, Thiel M, Thomas A, Usov YA, Wagner S, Walford NK, Watts DP, Werthmüller D, Wettig J, Witthauer L, Wolfes M, Zachariou N. First Measurement Using Elliptically Polarized Photons of the Double-Polarization Observable E for γp→pπ^{0} and γp→nπ^{+}. Phys Rev Lett 2024; 132:121902. [PMID: 38579200 DOI: 10.1103/physrevlett.132.121902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 04/07/2024]
Abstract
We report the measurement of the helicity asymmetry E for the pπ^{0} and nπ^{+} final states using, for the first time, an elliptically polarized photon beam in combination with a longitudinally polarized target at the Crystal Ball experiment at MAMI. The results agree very well with data that were taken with a circularly polarized photon beam, showing that it is possible to simultaneously measure polarization observables that require linearly (e.g., G) and circularly polarized photons (e.g., E) and a longitudinally polarized target. The new data cover a photon energy range 270-1400 MeV for the pπ^{0} final state (230-842 MeV for the nπ^{+} final state) and the full range of pion polar angles, θ, providing the most precise measurement of the observable E. A moment analysis gives a clear observation of the pη cusp in the pπ^{0} final state.
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Affiliation(s)
- F Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 Bonn, Germany
| | - K Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 Bonn, Germany
| | - P Hurck
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - S Abt
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - P Achenbach
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - P Adlarson
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - Z Ahmed
- University of Regina, Regina, SK S4S0A2, Canada
| | - C S Akondi
- Kent State University, Kent, Ohio 44242, USA
| | - J R M Annand
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - H J Arends
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Bashkanov
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 Bonn, Germany
| | - M Biroth
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N Borisov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Braghieri
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - W J Briscoe
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - F Cividini
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - C Collicott
- Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada
| | - S Costanza
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
- Dipartimento di Fisica, Università di Pavia, I-27100 Pavia, Italy
| | - A Denig
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Dieterle
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - E J Downie
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - P Drexler
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- II. Physikalisches Institut, University of Giessen, D-35392 Giessen, Germany
| | - S Fegan
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
| | - S Gardner
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - D Ghosal
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - D I Glazier
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - I Gorodnov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - W Gradl
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Gurevich
- Institute for Nuclear Research, RU-125047 Moscow, Russia
| | - L Heijkenskjöld
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Hornidge
- Mount Allison University, Sackville, New Brunswick E4L1E6, Canada
| | - G M Huber
- University of Regina, Regina, SK S4S0A2, Canada
| | - V L Kashevarov
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S J D Kay
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
| | - M Korolija
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - B Krusche
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - A Lazarev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - K Livingston
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - S Lutterer
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - I J D MacGregor
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - R G Macrae
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - D M Manley
- Kent State University, Kent, Ohio 44242, USA
| | - P P Martel
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- Mount Allison University, Sackville, New Brunswick E4L1E6, Canada
| | - R Miskimen
- University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - M Mocanu
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
| | - E Mornacchi
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - C Mullen
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - A Neganov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Neiser
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Oberle
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - M Ostrick
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - P B Otte
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Paudyal
- University of Regina, Regina, SK S4S0A2, Canada
| | - P Pedroni
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - A Powell
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - G Reicherz
- Institut für Experimentalphysik, Ruhr Universität, 44780 Bochum, Germany
| | - T Rostomyan
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - C Sfienti
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - V Sokhoyan
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - O Steffen
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - I I Strakovsky
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - T Strub
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - I Supek
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 Bonn, Germany
| | - M Thiel
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - A Thomas
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - Yu A Usov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Wagner
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N K Walford
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - D P Watts
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
| | - D Werthmüller
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
| | - J Wettig
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - L Witthauer
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - M Wolfes
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N Zachariou
- Department of Physics, University of York, Heslington, York, Y010 5DD, United Kingdom
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Belada D, Kopeckova K, Bergua Burgues JM, Stevens D, André M, Persona EP, Pichler P, Staber PB, Trneny M, Duell J, Waldron-Lynch M, Wagner S, Mukhopadhyay A, Dirnberger-Hertweck M, Burke JM, Nowakowski GS. Safety and efficacy of tafasitamab with or without lenalidomide added to first-line R-CHOP for DLBCL: the phase 1b First-MIND study. Blood 2023; 142:1348-1358. [PMID: 37369099 PMCID: PMC10651865 DOI: 10.1182/blood.2023020637] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/08/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Anti-CD19 immunotherapy tafasitamab is used in combination with lenalidomide in patients with relapsed/refractory diffuse large B-cell lymphoma (DLBCL) who are ineligible for autologous stem cell transplant. Open-label, phase 1b, First-MIND study assessed safety and preliminary efficacy of tafasitamab + R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) ± lenalidomide as first-line therapy in patients with DLBCL. From December 2019 to August 2020, 83 adults with untreated DLBCL (International Prognostic Index 2-5) were screened and 66 were randomly assigned (33 per arm) to R-CHOP-tafasitamab (arm T) or R-CHOP-tafasitamab-lenalidomide (arm T/L) for 6 cycles. Primary end point was safety; secondary end points included end-of-treatment (EoT) overall response rate (ORR) and complete response (CR) rate. All patients had ≥1 treatment-emergent adverse event, mostly grade 1 or 2. Grade ≥3 neutropenia and thrombocytopenia occurred, respectively, in 57.6% and 12.1% (arm T) and 84.8% and 36.4% (arm T/L) of patients. Nonhematologic toxicities occurred at similar rates among arms. R-CHOP mean relative dose intensity was ≥89% in both arms. EoT ORR was 75.8% (CR 72.7%) in arm T and 81.8% (CR 66.7%) in arm T/L; best ORR across visits was 90.0% and 93.9%. Eighteen-month duration of response and of CR rates were 72.7% and 74.5% (arm T) and 78.7% and 86.5% (arm T/L); 24-month progression-free and overall survival rates were 72.7% and 90.3% (arm T) and 76.8% and 93.8% (arm T/L). Manageable safety and promising signals of efficacy were observed in both arms. Potential benefit of adding tafasitamab + lenalidomide to R-CHOP is being investigated in phase 3 frontMIND (NCT04824092). This study is registered at www.clinicaltrials.gov as #NCT04134936.
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Affiliation(s)
- David Belada
- 4th Department of Internal Medicine—Hematology, Charles University, Hospital and Faculty of Medicine, Hradec Králové, Czech Republic
| | - Katerina Kopeckova
- Department of Oncology of the 2nd Faculty of Medicine of Charles University and University Hospital in Motol, Prague, Czech Republic
| | | | - Don Stevens
- Norton Cancer Institute—St. Matthews Campus, Louisville, KY
| | - Marc André
- Department of Hematology, Université Catholique de Louvain, CHU UCL Namur, Yvoir, Belgium
| | - Ernesto Perez Persona
- Bioaraba (Onco-hematology Research Group), Vitoria-Gasteiz, Spain
- Department of Hematology, Osakidetza Basque Health Service, Araba University Hospital, Vitoria-Gasteiz, Spain
| | - Petra Pichler
- Department of Internal Medicine, University Hospital of St. Pölten, St. Pölten, Austria
- Karl Landsteiner University of Health Sciences, Karl Landsteiner Institute for Nephrology and Hemato Oncology, St. Pölten, Austria
| | - Philipp B. Staber
- Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Marek Trneny
- Charles University General Hospital, Prague, Czech Republic
| | - Johannes Duell
- Medizinische Klinik und Poliklinik II, Universitätsklinik Würzburg, Würzburg, Germany
| | | | | | | | | | - John M. Burke
- US Oncology Research and Rocky Mountain Cancer Centers, Aurora, CO
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Zullo F, Di Mascio D, Raghuraman N, Wagner S, Brunelli R, Giancotti A, Mendez-Figueroa H, Cahill AG, Gupta M, Berghella V, Blackwell SC, Chauhan SP. Three-tiered fetal heart rate interpretation system and adverse neonatal and maternal outcomes: a systematic review and meta-analysis. Am J Obstet Gynecol 2023; 229:377-387. [PMID: 37044237 DOI: 10.1016/j.ajog.2023.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 04/03/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023]
Abstract
OBJECTIVE This study aimed to evaluate the rate of adverse neonatal or maternal outcomes in parturients with fetal heart rate tracings categorized as I, II or, III within the last 30 to 120 minutes of delivery. DATA SOURCES The MEDLINE Ovid, Scopus, Embase, CINAHL, and Clinicaltrials.gov databases were searched electronically up to May 2022, using combinations of the relevant medical subject heading terms, keywords, and word variants that were considered suitable for the topic. STUDY ELIGIBILITY CRITERIA Only observational studies of term infants reporting outcomes of interest with category I, II, or III fetal heart rate tracings were included. STUDY APPRAISAL AND SYNTHESIS METHODS The coprimary outcome was the rate of either Apgar score <7 at 5 minutes or umbilical artery pH <7.00. Secondary outcomes were divided into neonatal and maternal adverse outcomes. Quality assessment of the included studies was performed using the Newcastle-Ottawa Scale. Random-effect meta-analyses of proportions were used to estimate the pooled rates of each categorical outcome in fetal heart rate tracing category I, II, and III patterns, and random-effect head-to-head meta-analyses were used to directly compare fetal heart rate tracings category I vs II and fetal heart rate tracing category II vs III, expressing the results as summary odds ratio or as mean differences with relative 95% confidence intervals. RESULTS Of the 671 articles reviewed, 3 publications met the inclusion criteria. Among them were 47,648 singletons at ≥37 weeks' gestation. Fetal heart rate tracings in the last 30 to 120 minutes before delivery were characterized in the following manner: 27.0% of deliveries had category I tracings, 72.9% had category II tracings, and 0.1% had category III tracings. A single study, which was rated to be of poor quality, contributed 82.1% of the data and it did not provide any data for category III fetal heart rate tracings. When compared with category I fetal heart rate tracings (0.74%), the incidence of an Apgar score <7 at 5 minutes were significantly higher among deliveries with category II fetal heart rate tracings (1.51%) (odds ratio, 1.56; 95% confidence interval, 1.23-1.99) and among those with category III tracings (14.63%) (odds ratio, 14.46; 95% confidence interval, 2.77-75.39). When compared with category II tracings, category III tracings also had a significantly higher likelihood of a low Apgar score at 5 minutes (odds ratio, 14.46; 95% confidence interval, 2.77-75.39). The incidence of an umbilical artery pH <7.00 were similar among those with category I and those with category II tracings (0.08% vs 0.24%; odds ratio, 2.85; 95% confidence interval, 0.41-19.55). When compared with category I tracings, the incidence of an umbilical artery pH <7.00 was significantly more common among those with category III tracings (31.04%; odds ratio, 161.56; 95% confidence interval, 25.18-1036.42); likewise, when compared with those with category II tracings, those with category III tracings had a significantly higher likelihood of having an umbilical artery pH <7.00 (odds ratio, 42.29; 95% confidence interval, 14.29-125.10). Hypoxic-ischemic encephalopathy occurred with similar frequency among those with categories I and those with category II tracings (0 vs 0.81%; odds ratio, 5.86; 95% confidence interval, 0.75-45.89) but was significantly more common among those with category III tracings (0 vs 18.97%; odds ratio, 61.43; 95% confidence interval, 7.49-503.50). Cesarean delivery occurred with similar frequency among those with category I (13.41%) and those with category II tracings (11.92%) (odds ratio, 0.87; 95% confidence interval, 0.72-1.05) but was significantly more common among those with with category III tracings (14.28%) (odds ratio, 3.97; 95% confidence interval, 1.62-9.75). When compared with those with category II tracings, cesarean delivery was more common among those with category III tracings (odds ratio, 4.55; 95% confidence interval, 1.88-11.01). CONCLUSION Although the incidence of an Apgar score <7 at 5 minutes and umbilical artery pH <7.00 increased significantly with increasing fetal heart rate tracing category, about 98% of newborns with category II tracings do not have these adverse outcomes. The 3-tiered fetal heart rate tracing interpretation system provides an approximate but imprecise measurement of neonatal prognosis.
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Affiliation(s)
- Fabrizio Zullo
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Daniele Di Mascio
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Nandini Raghuraman
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO
| | - Steve Wagner
- Department of Obstetrics and Gynecology, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Roberto Brunelli
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Antonella Giancotti
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Hector Mendez-Figueroa
- Department of Obstetrics, Gynecology and Reproductive Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX
| | - Alison G Cahill
- Department of Women's Health, Dell Medical School, The University of Texas at Austin, Austin, TX
| | - Megha Gupta
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA
| | - Vincenzo Berghella
- Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA
| | - Sean C Blackwell
- Department of Obstetrics, Gynecology and Reproductive Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX
| | - Suneet P Chauhan
- Department of Obstetrics, Gynecology and Reproductive Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX.
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Cramer G, Shepley E, Knauer W, Crooker BA, Wagner S, Caixeta LS. An iterative approach to the development of a sole ulcer induction model in Holstein cows. J Dairy Sci 2023:S0022-0302(23)00213-8. [PMID: 37164859 DOI: 10.3168/jds.2022-22726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 01/09/2023] [Indexed: 05/12/2023]
Abstract
Our objective was to develop a sole ulcer (SU) induction model that can be used to investigate new and more efficacious methods for the treatment and prevention of SU. Three iterations [phase (P)1, P2, and P3] of an SU induction model designed to mimic mechanical and presumed metabolic pathways for SU development were conducted. The results from P1 and P2 identified alterations for the subsequent phase. Each phase used cows with similar calving dates that were randomly assigned (n = 4) to treatments. Control cows (P1CON, P3CON) did not undergo any challenges to induce SU development. Treatment cows were challenged with a hoof block (B) applied to the right hind lateral hoof. Other treatments included restricted lying time (L), restricted feed intake (F), or systemic lipopolysaccharide (LPS) administration. Treatment comparisons were P1CON versus P1BL, P2B versus P2BL, and P3CON versus P3BLF and P3BLF+LPS for P1, P2, and P3, respectively. Pregnant nulliparous Holstein cows were used in P1 and P3, and the P1 cohort was used in P2 during mid-lactation [125.9 ± 7.20 d in milk (DIM)]. Challenges were applied during a set challenge period (P1: -14 to 14 DIM, P2: 126-168 DIM, P3: -14 to 28 DIM). The P1BL cows had a hoof block applied and lying time restricted for 5 h/d. The P2B and P2BL cows had a hoof block and P2BL cows also had their lying time restricted for 18 h/d for 2 d/wk. The P3BLF and P3BLF+LPS cows had a hoof block, 6 h/d of lying time restricted 2 d/wk, and had their DMI restricted by 30% for 2 d/wk. At weekly intervals during wk 1 to 3 postpartum, P3BLF+LPS cows received jugular administration of 0.031, 0.062, and 0.125 µg of LPS per kg of body weight, respectively. Primary response measurements included hoof lesion and locomotion scoring, lying time, hoof thermography, and weight distribution per hoof. No SU induction occurred but sole hemorrhages, a precursor to SU, occurred during the postchallenge period of all phases. Temperature of the blocked hoof at the end of the challenge period did not change for P3CON cows but increased by 5.5°C and 6.2°C for P3BLF and P3BLF+LPS, respectively. Notable increases in lameness and lack of weight-bearing on the blocked hind hoof occurred for challenge treatment cows during the challenge period of P2 and P3. These changes did not persist after the hoof blocks were removed, indicating that hoof blocks succeeded in altering cow gait mechanics, but not enough to induce long-term lameness or SU. Lying restriction challenged cows in P2 and P3, indicated by a compensatory increase in lying time on the day following lying restriction compared with that on the day before restriction. In P3, lying time had the greatest depression during restriction and compensation following restriction in P3BLF+LPS cows, with LPS challenges potentially increasing the other challenge's effects. Future iterations of the SU induction model should include hoof block use, evaluate longer and more frequent standing and inclusion of forced walking bouts, and include DMI and LPS metabolic challenges.
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Affiliation(s)
- G Cramer
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, MN 55108.
| | - E Shepley
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, MN 55108
| | - W Knauer
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, MN 55108
| | - B A Crooker
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
| | - S Wagner
- School of Veterinary Medicine, Texas Tech University, Amarillo, TX 79106
| | - L S Caixeta
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, MN 55108
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6
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Wagner S, Renner N, Krause J, Perl M. [Distortion of the cervical spine : Pathophysiology, diagnostics, treatment and assessment]. Unfallchirurgie (Heidelb) 2022; 125:983-994. [PMID: 36376757 DOI: 10.1007/s00113-022-01248-y] [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] [Subscribe] [Scholar Register] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Distortion or whiplash trauma of the cervical spine is an injury pattern associated with motor vehicle collisions and typically occurs after rear impact collisions, but is not limited to this type of collision and accident. The vast majority of these injuries are low-grade injuries according to the Quebec Task Force (QTF) classification, whereby no objective morphological correlates can be determined in clinical and radiological examinations. The prognosis is predominantly favorable and the condition is self-limiting; however, care must be taken with respect to complex courses with chronic pain and the manifestation of neuropsychiatric complaints. Due to the mechanism of the accident this injury pattern is particularly frequent in accidents associated with third party liability insurance claims. The discrepancy between subjective complaints and the presence of objective findings is a particular challenge for the assessment by the medical expert.
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Affiliation(s)
- S Wagner
- Unfallchirurgische und Orthopädische Klinik, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstr. 12, 91054, Erlangen, Deutschland.
| | - N Renner
- Unfallchirurgische und Orthopädische Klinik, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstr. 12, 91054, Erlangen, Deutschland
| | - J Krause
- Unfallchirurgische und Orthopädische Klinik, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstr. 12, 91054, Erlangen, Deutschland
| | - M Perl
- Unfallchirurgische und Orthopädische Klinik, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstr. 12, 91054, Erlangen, Deutschland
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Trum M, Schollmeier E, Riechel J, Lebek S, Reuthner K, Keller K, Wester M, Provaznik Z, Schmid C, Maier L, Arzt M, Wagner S. Empagliflozin inhibits increased Na influx in HFpEF cardiomyocytes and reduces arrhythmic activity in human atrial trabeculae. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Heart failure with preserved ejection fraction (HFpEF) is a major health problem associated with substantial morbidity and mortality. However, the underlying pathophysiological mechanisms are poorly understood, and effective treatment strategies are scarce. Importantly, SGLT2i, which have been suggested to improve cellular Na and Ca homeostasis in HFrEF, have recently been shown to also improve clinical outcomes in patients with HFpEF. Interestingly, post-hoc analyses of clinical data suggest an involvement of anti-arrhythmic effects of SGLT2i.
Purpose
We tested, if isolated human atrial cardiomyocytes from patients with HFpEF exhibit an increased Na influx that is responsive to treatment with the SGLT2i empagliflozin (Empa) and if Empa has anti-arrhythmic properties in human atrial trabeculae.
Methods
Atrial biopsies were obtained from 101 patients undergoing elective cardiac surgery. Na influx was measured as increase in [Na]i during Na/K-ATPase inhibition in isolated cardiomyocytes loaded with the Na-sensitive fluorescence dye Asante Natrium Green–2 AM (ANG-2). Western Blot and HDAC4 pulldown assay were used to investigate NaV1.5 expression/phosphorylation as well as CaMKII expression/autophosphorylation and activity. Anti-arrhythmic effects of Empa were evaluated as the reduction in premature atrial complexes (PACs), which were induced in electrically field-stimulated (1Hz) human atrial trabeculae by superfusion with isoproterenol (100 nM) and high Ca (3.5 mM).
Results
Compared to patients without heart failure (NF), Na influx was almost doubled in HFpEF patients (NF vs HFpEF: 0.21±0.02 vs 0.38±0.04 mmol/L/min (N=7 vs 18); p=0.005) (Fig. 1D, E). CaMKII expression, CaMKII autophosphorylation, CaMKII activity, and CaMKII-dependent NaV1.5 phosphorylation were significantly increased in atrial biopsies of HFpEF patients, whereas NaV1.5 protein abundance remained unchanged (Fig. 1A–C). Consistent with these results, the increased Na influx was significantly reduced by treatment with the specific CaMKII inhibitor autocamtide-2 related inhibitory peptide (AIP) and the late INa inhibitor tetrodotoxin (TTX) (Fig. 1D, E). Importantly, Empa also abolished the increased Na influx in HFpEF cardiomyocytes (Fig. 1D, E). Multivariate linear regression analysis, adjusting for clinical co-variates, revealed HFpEF to be an independent predictor of cardiomyocyte Na handling. In line with Empa-mediated inhibition of Na influx, the frequency of PACs in human atrial trabeculae was significantly reduced by Empa (Fig. 1F, G).
Conclusion
This is the first study to demonstrate increased Na influx in human cardiomyocytes from HFpEF patients potentially by an increased CaMKII-dependent NaV1.5 phosphorylation. Excitingly, treatment with Empa decreases this Na influx in HFpEF cardiomyocytes and reduces isoproterenol-induced arrhythmic activity in human atrial trabeculae, which could contribute to the cardioprotective effects of this drug in patients with HFpEF.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Else Kröner-Fresenius-Stiftung,Deutsche Forschungsgemeinschaft
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Affiliation(s)
- M Trum
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - E Schollmeier
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - J Riechel
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - S Lebek
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - K Reuthner
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - K Keller
- Hospital Barmherzige Bruder , Regensburg , Germany
| | - M Wester
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - Z Provaznik
- University Hospital Regensburg, Cardiothoracic Surgery , Regensburg , Germany
| | - C Schmid
- University Hospital Regensburg, Cardiothoracic Surgery , Regensburg , Germany
| | - L Maier
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - M Arzt
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
| | - S Wagner
- University Hospital Regensburg, Internal Medicine II , Regensburg , Germany
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Hegner P, Gugg M, Lebek S, Maier LS, Arzt M, Wagner S. Oxidative activation of CaMKII mediates arrhythmias and contractile dysfunction in an obstructive sleep apnea mouse model. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
Atrial arrhythmias frequently occur in patients with obstructive sleep apnea (OSA), but the underlying mechanisms remain insufficiently understood. We recently demonstrated that CaMKII-dependent pro-arrhythmic activity is increased in patients with OSA, but the mechanisms of CaMKII activation remain unknown. Interestingly, OSA can lead to increased reactive oxygen species production, which may facilitate CaMKII activation by oxidation at methionine residues 281/282.
Purpose
We tested if oxidation of CaMKII is involved in the development of arrhythmias and contractile dysfunction in vitro and in vivo in a mouse model of obstructive sleep apnea by tongue enlargement.
Methods
Experiments were performed using 41 wild-type (WT) and 25 genetically modified mice lacking oxidative CaMKII activation due to mutation of methionine 281/282 to valine (MMVV mice). Polytetrafluorethylene (PTFE, 100 μl) was injected into the tongue of 23 WT and 12 MMVV mice to induce OSA by sustained tongue enlargement as previously established. Whole body plethysmography was performed to confirm success of intervention. Echocardiography was performed at baseline and after 8 weeks to assess left-ventricular function. After 8 weeks, isolated atrial and ventricular cardiomyocytes were incubated with the Ca-sensitive dye FURA-2 AM (5 μM, 15 min) and analyzed with epifluorescence microscopy under regular electrical field stimulation (1 Hz).
Results
PTFE injection resulted in an increased frequency of inspiratory flow limitations (IFLs/h) from 27.4±5.95 to 59.6±6.22 in PTFE mice (p<0.001, fig. 1A). Interestingly, in WT PTFE mice, left ventricular ejection fraction (LVEF, in %) was reduced at 8 weeks post procedure from 57.0±1.36 to 51.5±1.85 (p=0.001, fig. 1B). Importantly, mice lacking oxidative CaMKII activation were protected from such decline in contractile function, and LVEF was higher at 8 weeks vs. WT PTFE (p<0.001, fig. 1B). Congruent with deterioration of contractility in vivo, the Ca transient amplitude after 30s pause (normalized to steady-state before pause) was decreased in ventricular cardiomyocytes of WT PTFE mice indicating increased SR Ca leak (p for interaction genotype x PTFE = 0.014, fig. 1C). In contrast to WT, the post-pause ratio was increased in MMVV PTFE mice (p=0.018, fig. 1C). In addition to contractile function, cellular arrhythmic events were analyzed as non-stimulated pro-arrhythmic events (NSEs) during steady-state electrical field stimulation at 1 Hz (fig. 1D, red arrows). NSE frequency was increased in atrial cardiomyocytes from WT PTFE mice with 0.050±0.005 compared to 0.018±0.003 s–1 in WT CTRL (p<0.001, fig. 1D). Intriguingly, MMVV mice were protected from NSEs after PTFE treatment (0.020±0.004, p<0.001 vs. WT PTFE, Fig. 1D).
Conclusion
In a mouse model of obstructive sleep apnea, contractile dysfunction and pro-arrhythmic activity are modulated by oxidative CaMKII activation, which may have therapeutic implications.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Deutsche Forschungsgemeinschaft; Medical Faculty at University of Regensburg
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Affiliation(s)
- P Hegner
- University Hospital Regensburg, Department for Internal Medicine II - Cardiology , Regensburg , Germany
| | - M Gugg
- University Hospital Regensburg, Department for Internal Medicine II - Cardiology , Regensburg , Germany
| | - S Lebek
- University Hospital Regensburg, Department for Internal Medicine II - Cardiology , Regensburg , Germany
| | - L S Maier
- University Hospital Regensburg, Department for Internal Medicine II - Cardiology , Regensburg , Germany
| | - M Arzt
- University Hospital Regensburg, Department for Internal Medicine II - Cardiology , Regensburg , Germany
| | - S Wagner
- University Hospital Regensburg, Department for Internal Medicine II - Cardiology , Regensburg , Germany
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Hindley C, Biondo A, Brothwood J, Dao K, Kandola N, Lyons J, Nakatsuru Y, Smyth T, Wagner S, Wallis N, Hearn K. A combination vertical inhibition approach with inhibitors of SHP2 and ERK provides improved activity in KRAS-mutant pancreatic and colorectal cancer models. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00953-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Silvano LM, Reche APA, Moura AA, Alegransi NP, Rotta LN, Wagner S. O INCENTIVO E A CONSCIENTIZAÇÃO ACERCA DA DOAÇÃO DE SANGUE ATRAVÉS DAS REDES SOCIAIS DE UMA LIGA ACADÊMICA DE PORTO ALEGRE. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1082] [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: 11/06/2022] Open
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Alegransi NP, Rosa AG, Reche APA, Moura AA, Silvano LM, Trintinaglia L, Rotta LN, Wagner S. CAPACITAÇÃO SOBRE MORFOLOGIA CELULAR PARA DISCENTES DE UMA LIGA ACADÊMICA DA ÁREA DA SAÚDE: UM RELATO DE EXPERIÊNCIA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1089] [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: 11/11/2022] Open
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Moura AA, Reche APA, Silvano LM, Alegransi NP, Rotta LN, Wagner S. A ORGANIZAÇÃO DE UMA JORNADA MULTIDISCIPLINAR SOBRE HEMOTERAPIA E HEMATOLOGIA: UM RELATO DE EXPERIÊNCIA DE UMA LIGA ACADÊMICA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1077] [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: 11/11/2022] Open
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Reche APA, Moura AA, Silvano LM, Alegransi NP, Rotta LN, Wagner S. DIVULGAÇÃO CIENTÍFICA EM HEMATOLOGIA E HEMOTERAPIA ATRAVÉS DAS REDES SOCIAIS DE UMA LIGA ACADÊMICA DE PORTO ALEGRE. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.1075] [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: 11/11/2022] Open
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Griss JG, Drach M, Thaler F, Shaw L, Mann U, Wagner C, Wagner S, Weninger W, Simonitsch-Klupp I, Farlik M, Jonak C, Brunner PM. Single-cell RNA sequencing analyses of primary cutaneous B-cell disorders reveal distinct molecular patterns consistent with clinical behavior. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00555-x] [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: 11/15/2022]
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Heilig C, Teleanu MV, Bhatti I, Richter S, Siveke J, Wagner S, Kopp HG, Kindler T, Illert L, Golf A, Dormann K, Benner A, Süsse H, Freitag A, Von Kalle C, Glimm H, Hübschmann D, Fröhling S, Schlenk R. 487P Randomized phase II study of trabectedin/olaparib compared to physician’s choice in subjects with previously treated advanced or recurrent solid tumors harboring DNA repair deficiencies. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.615] [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: 11/01/2022] Open
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Mornacchi E, Martel PP, Abt S, Achenbach P, Adlarson P, Afzal F, Ahmed Z, Annand JRM, Arends HJ, Bashkanov M, Beck R, Biroth M, Borisov N, Braghieri A, Briscoe WJ, Cividini F, Collicott C, Costanza S, Denig A, Dolzhikov AS, Downie EJ, Drexler P, Fegan S, Gardner S, Ghosal D, Glazier DI, Gorodnov I, Gradl W, Günther M, Gurevich D, Heijkenskjöld L, Hornidge D, Huber GM, Käser A, Kashevarov VL, Kay SJD, Korolija M, Krusche B, Lazarev A, Livingston K, Lutterer S, MacGregor IJD, Manley DM, Miskimen R, Mocanu M, Mullen C, Neganov A, Neiser A, Ostrick M, Paudyal D, Pedroni P, Powell A, Rostomyan T, Sokhoyan V, Spieker K, Steffen O, Strakovsky I, Strub T, Thiel M, Thomas A, Usov YA, Wagner S, Watts DP, Werthmüller D, Wettig J, Wolfes M, Zachariou N. Measurement of Compton Scattering at MAMI for the Extraction of the Electric and Magnetic Polarizabilities of the Proton. Phys Rev Lett 2022; 128:132503. [PMID: 35426697 DOI: 10.1103/physrevlett.128.132503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/31/2022] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
A precise measurement of the differential cross sections dσ/dΩ and the linearly polarized photon beam asymmetry Σ_{3} for Compton scattering on the proton below pion threshold has been performed with a tagged photon beam and almost 4π detector at the Mainz Microtron. The incident photons were produced by the recently upgraded Glasgow-Mainz photon tagging facility and impinged on a cryogenic liquid hydrogen target, with the scattered photons detected in the Crystal Ball/TAPS setup. Using the highest statistics Compton scattering data ever measured on the proton along with two effective field theories (both covariant baryon and heavy-baryon) and one fixed-t dispersion relation model, constraining the fits with the Baldin sum rule, we have obtained the proton electric and magnetic polarizabilities with unprecedented precision: α_{E1}=10.99±0.16±0.47±0.17±0.34, β_{M1}=3.14±0.21±0.24±0.20±0.35; in units of 10^{-4} fm^{3} where the errors are statistical, systematic, spin polarizability dependent, and model dependent.
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Affiliation(s)
- E Mornacchi
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - P P Martel
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
- Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada
| | - S Abt
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - P Achenbach
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - P Adlarson
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - F Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
| | - Z Ahmed
- University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - J R M Annand
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - H J Arends
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - M Bashkanov
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
| | - M Biroth
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - N Borisov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | | | - W J Briscoe
- The George Washington University, Washington, D.C. 20052-0001, USA
| | - F Cividini
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - C Collicott
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - S Costanza
- INFN Sezione di Pavia, I-27100 Pavia, Italy
| | - A Denig
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - A S Dolzhikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - E J Downie
- The George Washington University, Washington, D.C. 20052-0001, USA
| | - P Drexler
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - S Fegan
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - S Gardner
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - D Ghosal
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - D I Glazier
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - I Gorodnov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - W Gradl
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - M Günther
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - D Gurevich
- Institute for Nuclear Research, 125047 Moscow, Russia
| | - L Heijkenskjöld
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - D Hornidge
- Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada
| | - G M Huber
- University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - A Käser
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - V L Kashevarov
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S J D Kay
- University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - M Korolija
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - B Krusche
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - A Lazarev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - K Livingston
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - S Lutterer
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - I J D MacGregor
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - D M Manley
- Kent State University, Kent, Ohio 44242-0001, USA
| | - R Miskimen
- University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - M Mocanu
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - C Mullen
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - A Neganov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Neiser
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - M Ostrick
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - D Paudyal
- University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - P Pedroni
- INFN Sezione di Pavia, I-27100 Pavia, Italy
| | - A Powell
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - T Rostomyan
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - V Sokhoyan
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - K Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
| | - O Steffen
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - I Strakovsky
- The George Washington University, Washington, D.C. 20052-0001, USA
| | - T Strub
- Departement für Physik, Universität Basel, CH-4056 Basel, Switzerland
| | - M Thiel
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - A Thomas
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - Yu A Usov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Wagner
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - D P Watts
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - D Werthmüller
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - J Wettig
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - M Wolfes
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - N Zachariou
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
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Armano G, Barbuto S, Wagner S, Carugno J, Bifulco G, Di Spiezio Sardo A. Incorporating 3D reconstruction in preoperative surgical planning of Multiple Myomectomy. Facts Views Vis Obgyn 2022; 14:87-89. [PMID: 35373553 PMCID: PMC9612863 DOI: 10.52054/fvvo.14.1.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background Medical 3D imaging is a promising emerging technology that allows recreating the details of human anatomy. The use of this innovative technology has resulted in improved surgical efficiency and better clinical outcomes. However, its incorporation in gynaecologic surgery has not been widely adopted. Objectives To demonstrate the use of Hyper Accuracy 3D reconstruction in a patient with infertility who underwent multiple myomectomy. Materials and Methods A stepwise approach describing the incorporation of Hyper Accuracy 3D imaging technology into the preoperative surgical planning and intraoperative guidance of a patient with multiple myomas undergoing multiple myomectomy. Main outcome measures Preoperative evaluation of a patient with multiple myoma and infertility who presented to our department seeking surgical management. Hyper Accuracy 3D image was obtained, and a 3D digital image reconstruction of the uterus delineating the exact number, volume, and location of the fibroids was created. The 3D digital image was available during the surgical procedure which helped to plan the surgical steps allowing a systematic surgical approach resulting in an effective surgery with minimal blood loss. Results The benefits of intraoperative guidance using Hyper Accuracy 3D in a patient with multiple myomas and infertility are demonstrated. Conclusions The adoption of this promising imaging technology into gynaecologic surgery is feasible and should be further investigated. Additional studies evaluating the clinical impact of using Hyper Accuracy 3D imaging in the preoperative planning of patients with gynaecologic surgical pathology are needed.
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Misal M, Girardo M, Behbehani S, Bindra V, Hoffman MR, Lim WH, Martin C, Mehta SK, Nensi A, Soares T, Taylor D, Wagner S, Wright KN, Wasson MN. Evaluating surgical complexity of endoscopic hysterectomy: an interrater and intrarater agreement study of novel scoring tool. J Minim Invasive Gynecol 2022; 29:683-690. [DOI: 10.1016/j.jmig.2022.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 01/08/2022] [Accepted: 01/13/2022] [Indexed: 10/19/2022]
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Misal M, Behbehani S, Bindra V, Girardo M, Hoffman MR, Lim WH, Martin CB, Mehta SK, Nensi A, Soares TR, Taylor D, Wagner S, Wright KN, Wasson MN. Evaluating Surgical Complexity of Endoscopic Hysterectomy: An Inter-Rater Agreement Study for Novel Scoring Tool. J Minim Invasive Gynecol 2021. [DOI: 10.1016/j.jmig.2021.09.453] [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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Lebek S, Rohde J, Hegner P, Tafelmeier M, Floerchinger B, Rupprecht L, Schmid C, Sossalla ST, Maier LS, Arzt M, Wagner S. Increased NaV1.8 expression in patients with sleep-disordered breathing induces pro-arrhythmic activity. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Sleep-disordered breathing (SDB) is often associated with atrial fibrillation, but detailed mechanisms remain elusive. Interestingly, late Na current (late INa) has been shown to be increased in patients with SDB, while expression of cardiac Na channel NaV1.5 and peak Na current were decreased. Indeed, recent data demonstrated that enhanced NaV1.8-dependent late INa may also induce pro-arrhythmic activity.
Purpose
We tested whether Na-V1.8 expression and subsequent NaV1.8-dependent pro-arrhythmic activity are increased in patients with SDB.
Methods
We prospectively analysed 29 right atrial appendage biopsies of patients undergoing elective coronary artery bypass grafting. SDB was assessed using polygraphy in the preoperative night and an apnoea-hypopnea index (AHI) ≥15/h defined SDB. Micro-dissected atrial trabeculae were electrically field stimulated (at 1 Hz, 5 V for 50 ms, at 37°C) to elicit regular contractions. Trabecular arrhythmias were induced using 100 nM isoproterenol at [Ca]o of 3.5 mmol/L and pro-arrhythmic activity was scored from 0 (no arrhythmias) to 5 (salve). Sarcoplasmic reticulum Ca leak was estimated by the contractility after paused stimulation (at 2 Hz, normalized to before pause). To correlate functional and expression data for each individual patient, NaV1.8 mRNA expression was quantified in each trabeculum using qPCR.
Results
NaV1.8 mRNA expression was increased in patients with SDB, leading to a significant positive correlation with the severity of SDB (i.e. AHI, p=0.02, r2=0.22, Fig. 1A). Multivariate regression analysis revealed that this association was independent from age, sex, atrial fibrillation, heart failure, diabetes mellitus, and renal function (p=0.03, r2=0.35). Accordingly, selective NaV1.8 blockade with PF-01247324 (PF, 1 μM, 30 min) significantly improved post-pause contractility of isolated trabeculae from 1.69±0.31 to 2.95±0.54 in patients with SDB (p=0.001), whereas no significant improvement was observed in patients without SDB. This resulted in significant positive correlations between the PF-dependent improvement of post-pause contractility and both AHI (p=0.047, r2=0.19) and NaV1.8 mRNA expression (p=0.03, r2=0.17). Most importantly, we also observed a significant increase in arrhythmia severity in patients with SDB of 2.21±0.52 (vs. 1.00±0.49, p=0.03) that could be significantly reduced by selective NaV1.8 inhibition with PF to 0.25±0.18 (p=0.0008, Fig. 1B). In accordance, there was a significant positive correlation between arrhythmia severity and AHI (p=0.01, r2=0.28) that was abolished in the presence of PF (interaction analysis: p=0.ehab724.33141, r2=0.46).
Conclusion
In patients with SDB, enhanced NaV1.8 expression contribute to atrial pro-arrhythmic activity independent from comorbidities. Selective NaV1.8 inhibition may have therapeutic implications for patients with SDB.
Funding Acknowledgement
Type of funding sources: Other. Main funding source(s): Part of the study was supported by grants from Philips Respironics (Murrysville, PA 15668) and the Medical Faculty at the University of Regensburg. Figure 1
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Affiliation(s)
- S Lebek
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - J Rohde
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - P Hegner
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Tafelmeier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - B Floerchinger
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - L Rupprecht
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Schmid
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S T Sossalla
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - L S Maier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Arzt
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Wagner
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
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21
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Mullen C, Gardner S, Glazier DI, Kay SJD, Livingston K, Strakovsky II, Workman RL, Abt S, Achenbach P, Afzal F, Ahmed Z, Akondi CS, Annand JRM, Bashkanov M, Beck R, Biroth M, Borisov NS, Braghieri A, Briscoe WJ, Cividini F, Collicott C, Costanza S, Denig A, Dieterle M, Downie EJ, Drexler P, Fegan S, Ferretti-Bondy MI, Ghosal D, Gorodnov I, Gradl W, Günther M, Gurevic G, Heijkenskjöld L, Hornidge D, Huber GM, Jermann N, Kaeser A, Korolija M, Kashevarov VL, Krusche B, Kulikov VV, Lazarev A, Lutterer S, MacGregor IJD, Manley DM, Martel PP, Martemianov MA, Meier C, Miskimen R, Mocanu M, Mornacchi E, Neganov A, Oberle M, Ostrick M, Otte P, Paudyal D, Pedroni P, Powell A, Prakhov SN, Reicherz G, Ron G, Rostomyan T, Sfienti C, Sokhoyan V, Spieker K, Steffen O, Strub T, Supek I, Thiel A, Thiel M, Thomas A, Unverzagt M, Usov YA, Wagner S, Walford NK, Watts DP, Werthmüller D, Wettig J, Witthauer L, Wolfes M, Zachariou N. Single π 0 production off neutrons bound in deuteron with linearly polarized photons. Eur Phys J A Hadron Nucl 2021; 57:205. [PMID: 34720708 PMCID: PMC8550430 DOI: 10.1140/epja/s10050-021-00521-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/10/2021] [Indexed: 06/13/2023]
Abstract
The quasifree γ → d → π 0 n ( p ) photon beam asymmetry, Σ , has been measured at photon energies, E γ , from 390 to 610 MeV, corresponding to center of mass energy from 1.271 to 1.424 GeV, for the first time. The data were collected in the A2 hall of the MAMI electron beam facility with the Crystal Ball and TAPS calorimeters covering pion center-of-mass angles from 49 ∘ to 148 ∘ . In this kinematic region, polarization observables are sensitive to contributions from the Δ ( 1232 ) and N(1440) resonances. The extracted values of Σ have been compared to predictions based on partial-wave analyses (PWAs) of the existing pion photoproduction database. Our comparison includes the SAID, MAID and Bonn-Gatchina analyses; while a revised SAID fit, including the new Σ measurements, has also been performed. In addition, isospin symmetry is examined as a way to predict π 0 n photoproduction observables, based on fits to published data in the channels π 0 p , π + n and π - p .
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Affiliation(s)
- C. Mullen
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - S. Gardner
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - D. I. Glazier
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - S. J. D. Kay
- SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh, EH9 3FD UK
- Department of Physics, University of Regina, Regina, SK S4S 0A2 Canada
| | - K. Livingston
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - I. I. Strakovsky
- Department of Physics, Institute for Nuclear Studies, The George Washington University, Washington, DC, 20052 USA
| | - R. L. Workman
- Department of Physics, Institute for Nuclear Studies, The George Washington University, Washington, DC, 20052 USA
| | - S. Abt
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - P. Achenbach
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - F. Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, 53115 Bonn, Germany
| | - Z. Ahmed
- Department of Physics, University of Regina, Regina, SK S4S 0A2 Canada
| | | | - J. R. M. Annand
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - M. Bashkanov
- Department of Physics, University of York, Heslington, York, Y010 5DD UK
| | - R. Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, 53115 Bonn, Germany
| | - M. Biroth
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | | | | | - W. J. Briscoe
- Department of Physics, Institute for Nuclear Studies, The George Washington University, Washington, DC, 20052 USA
| | - F. Cividini
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - C. Collicott
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | | | - A. Denig
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - M. Dieterle
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - E. J. Downie
- Department of Physics, Institute for Nuclear Studies, The George Washington University, Washington, DC, 20052 USA
| | - P. Drexler
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - S. Fegan
- Department of Physics, University of York, Heslington, York, Y010 5DD UK
| | - M. I. Ferretti-Bondy
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - D. Ghosal
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | | | - W. Gradl
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - M. Günther
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - G. Gurevic
- Institute for Nuclear Research, 125047 Moscow, Russia
| | - L. Heijkenskjöld
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - D. Hornidge
- Mount Allison University, Sackville, NB E4L3B5 Canada
| | - G. M. Huber
- Department of Physics, University of Regina, Regina, SK S4S 0A2 Canada
| | - N. Jermann
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - A. Kaeser
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - M. Korolija
- Rudjer Boskovic Institute, 10000 Zagreb, Croatia
| | - V. L. Kashevarov
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
- JINR, 141980 Dubna, Russia
| | - B. Krusche
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - V. V. Kulikov
- NRC “Kurchatov Institute”-ITEP, 117218 Moscow, Russia
| | - A. Lazarev
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, 53115 Bonn, Germany
| | - S. Lutterer
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - I. J. D. MacGregor
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | | | - P. P. Martel
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | | | - C. Meier
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - R. Miskimen
- University of Massachusetts, Amherst, MA 01003 USA
| | - M. Mocanu
- Department of Physics, University of York, Heslington, York, Y010 5DD UK
| | - E. Mornacchi
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | | | - M. Oberle
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - M. Ostrick
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - P. Otte
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - D. Paudyal
- Department of Physics, University of Regina, Regina, SK S4S 0A2 Canada
| | - P. Pedroni
- INFN Sezione di Pavia, 27100 Pavia, Italy
| | - A. Powell
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - S. N. Prakhov
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - G. Reicherz
- Institut für Experimentalphysik, Ruhr-University of Bochum, 44801 Bochum, Germany
| | - G. Ron
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem, Israel
| | - T. Rostomyan
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - C. Sfienti
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - V. Sokhoyan
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - K. Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, 53115 Bonn, Germany
| | - O. Steffen
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - Th. Strub
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - I. Supek
- Rudjer Boskovic Institute, 10000 Zagreb, Croatia
| | - A. Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, 53115 Bonn, Germany
| | - M. Thiel
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - A. Thomas
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - M. Unverzagt
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | | | - S. Wagner
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - N. K. Walford
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - D. P. Watts
- Department of Physics, University of York, Heslington, York, Y010 5DD UK
| | - D. Werthmüller
- SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
| | - J. Wettig
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - L. Witthauer
- Institut für Physik, University of Basel, 4056 Basel, Switzerland
| | - M. Wolfes
- Institut für Kernphysik, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - N. Zachariou
- Department of Physics, University of York, Heslington, York, Y010 5DD UK
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22
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Savchenko P, Wang S, Ichinomiya T, Wang D, Paul E, Wagner S, Patel H, Head B. Mitochondria Damage as Early Indicator in an APP
NL‐G‐F
Mouse Model of Alzheimer's Disease. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.03367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paul Savchenko
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
| | - Shanshan Wang
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
| | - Taiga Ichinomiya
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
| | - Dongsheng Wang
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
| | - Ethan Paul
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
| | - Steve Wagner
- NeurosciencesDepartment of NeurosciencesUC San DiegoLa JollaCA
| | - Hemal Patel
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
| | - Brian Head
- AnesthesiologyDepartment of AnesthesiologyUC San DiegoLa JollaCA
- AnesthesiologyVeterans Affairs San Diego Healthcare SystemSan DiegoCA
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23
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Kreitmeier KG, Tarnowski D, Nanadikar MS, Baier MJ, Wagner S, Katschinski DM, Maier LS, Sag CM. CaMKII δ Met281/282 oxidation is not required for recovery of calcium transients during acidosis. Am J Physiol Heart Circ Physiol 2021; 320:H1199-H1212. [PMID: 33449853 DOI: 10.1152/ajpheart.00040.2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 12/15/2020] [Accepted: 01/11/2021] [Indexed: 12/31/2022]
Abstract
CaMKII is needed for the recovery of Ca2+ transients during acidosis but also mediates postacidic arrhythmias. CaMKIIδ can sustain its activity following Met281/282 oxidation. Increasing cytosolic Na+ during acidosis as well as postacidic pH normalization should result in prooxidant conditions within the cell favoring oxidative CaMKIIδ activation. We tested whether CaMKIIδ activation through Met281/282 oxidation is involved in recovery of Ca2+ transients during acidosis and promotes cellular arrhythmias post-acidosis. Single cardiac myocytes were isolated from a well-established mouse model in which CaMKIIδ was made resistant to oxidative activation by knock-in replacement of two oxidant-sensitive methionines (Met281/282) with valines (MM-VV). MM-VV myocytes were exposed to extracellular acidosis (pHo 6.5) and compared to wild type (WT) control cells. Full recovery of Ca2+ transients was observed in both WT and MM-VV cardiac myocytes during late-phase acidosis. This was associated with comparably enhanced sarcoplasmic reticulum Ca2+ load and preserved CaMKII specific phosphorylation of phospholamban at Thr17 in MM-VV myocytes. CaMKII was phosphorylated at Thr287, but not Met281/282 oxidized. In line with this, postacidic cellular arrhythmias occurred to a similar extent in WT and MM-VV cells, whereas inhibition of CaMKII using AIP completely prevented recovery of Ca2+ transients during acidosis and attenuated postacidic arrhythmias in MM-VV cells. Using genetically altered cardiomyocytes with cytosolic expression of redox-sensitive green fluorescent protein-2 coupled to glutaredoxin 1, we found that acidosis has a reductive effect within the cytosol of cardiac myocytes despite a significant acidosis-related increase in cytosolic Na+. Our study shows that activation of CaMKIIδ through Met281/282 oxidation is neither required for recovery of Ca2+ transients during acidosis nor relevant for postacidic arrhythmogenesis in isolated cardiac myocytes. Acidosis reduces the cytosolic glutathione redox state of isolated cardiac myocytes despite a significant increase in cytosolic Na+. Pharmacological inhibition of global CaMKII activity completely prevents recovery of Ca2+ transients and protects from postacidic arrhythmias in MM-VV myocytes, which confirms the relevance of CaMKII in the context of acidosis.NEW & NOTEWORTHY The current study shows that activation of CaMKIIδ through Met281/282 oxidation is neither required for CaMKII-dependent recovery of Ca2+ transients during acidosis nor relevant for the occurrence of postacidic cellular arrhythmias. Despite a usually prooxidant increase in cytosolic Na+, acidosis reduces the cytosolic glutathione redox state within cardiac myocytes. This novel finding suggests that oxidation of cytosolic proteins is less likely to occur during acidosis.
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Affiliation(s)
- K G Kreitmeier
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
- Department of Internal Medicine III, University Medical Center Regensburg, Germany
| | - D Tarnowski
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - M S Nanadikar
- Institute for Cardiovascular Physiology, Georg August University, Göttingen, Germany
| | - M J Baier
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - S Wagner
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - D M Katschinski
- Institute for Cardiovascular Physiology, Georg August University, Göttingen, Germany
| | - L S Maier
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - C M Sag
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
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24
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Wester M, Pec J, Fisser C, Debl K, Hamer O, Poschenrieder F, Buchner S, Maier LS, Arzt M, Wagner S. Reduced left atrial strain in magnetic resonance imaging is associated with abnormal P-waves in patients after acute myocardial infarction. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public hospital(s). Main funding source(s): ReForM-B-Program
Background
Abnormal P-wave terminal force in lead V1 (PTFV1) is associated with atrial remodeling. The relationship between PTFV1 and atrial function after acute myocardial injury is insufficiently understood and may be elucidated by detailed feature tracking (FT) strain analysis of cardiac magnetic resonance images (CMR).
Purpose
We investigated the relationship between PTFV1 and left atrial (LA) strain (measured by CMR) in a patient cohort presenting with acute myocardial infarction (MI).
Methods
56 patients with acute MI underwent CMR within 3-5 days after MI. PTFV1 was measured as the product of negative P-wave amplitude and duration in lead V1 (Fig. A). A PTFV1 >4000 ms*µV was defined as abnormal. CMR cine data were retrospectively analyzed using a dedicated FT software. LA strain (ε) and strain rate (SR) for atrial reservoir ([εs]; [SRs]), conduit ([εe]; [SRe]) and booster function ([εa]; [SRa]) were measured in two long-axis views (Fig. A).
Results
Patients with abnormal PTFV1 had significantly reduced LA conduit function εe and SRe (Fig. B + D). There was a significant negative correlation between the extent of PTFV1 and both εe and SRe (Fig. C + E). In univariate and multivariate regression models, both PTFV1 and age predicted atrial conduit function. In contrast, multiple clinical co-factors had no significant influence on εe (Table). Interestingly, linear regression models revealed only mild dependency of PTFV1 on conventional parameters of cardiac function such as left ventricular ejection fraction (p = 0.059; R²(adj.)=0.047), and no dependency on structural parameters such as LA area (p = 0.639; R²(adj.)=0.016), or LA fractional area change (p = 0.825; R²(adj.)=0.020).
Conclusion
Abnormal PTFV1 was associated with reduced LA function independent from numerous clinical co-factors in patients presenting with acute myocardial infarction.
Table N = 56 Linear Regression Analysis Multiple Linear Regression Analysis (R2 (adj.)=0.376, p = 0.016) Variable B 95% CI P value R2 (adj.) B 95% CI P value PTFV1 [µV*ms] -1.628 17085.298 to 27210.854 0.013 0.092 -1.315 -2.614 to -0.016 0.047 Age [y] -425.775 24985.168 to 54634.995 0.002 0.145 -610.815 -982.78 to -238.849 0.001 Body mass indes [kg/m2] -185.653 -3259.187 to 47020.775 0.671 -0.015 -506.096 -1327.357 to 315.165 0.219 Creatinine kinase [U/l] -1.571 14806.991 to 24842.272 0.121 0.027 -1.791 -3.72 to 0.138 0.067 Male sex -893.28 10701.206 to 23504.066 0.802 -0.017 4275.631 -3842.517 to 12393.78 0.292 Estimated glomerular filtration rate [ml/min/1.73m2] 88.617 -4564.177 to 21395.361 0.202 0.012 -163.981 -331.343 to 3.381 0.054 Systolic blood pressure [mmHg] -2.001 14045.786 to 22037.253 0.095 0.038 29.331 -108.243 to 166.906 0.668 nt-pro brain natriuretic peptide [pg/ml] 24.629 -4060.804 to 30920.828 0.716 -0.016 1.015 -1.778 to 3.809 0.466 Univariate and multivariate linear regression models for left atrial conduit strain Abstract Figure
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Affiliation(s)
- M Wester
- University hospital Regensburg, University Heart Center, Regensburg, Germany
| | - J Pec
- University hospital Regensburg, University Heart Center, Regensburg, Germany
| | - C Fisser
- University hospital Regensburg, University Heart Center, Regensburg, Germany
| | - K Debl
- University hospital Regensburg, University Heart Center, Regensburg, Germany
| | - O Hamer
- University hospital Regensburg, Departement of Radiology, Regensburg, Germany
| | - F Poschenrieder
- University hospital Regensburg, Departement of Radiology, Regensburg, Germany
| | - S Buchner
- Cham Hospital, Departement of Internal Medicine, Cham, Germany
| | - LS Maier
- University hospital Regensburg, University Heart Center, Regensburg, Germany
| | - M Arzt
- University hospital Regensburg, University Heart Center, Regensburg, Germany
| | - S Wagner
- University hospital Regensburg, University Heart Center, Regensburg, Germany
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Alessi S, Merkling T, Girerd N, Boivin JM, Chau K, Lopez-Sublet M, Laville M, Zannad F, Rossignol P, Wagner S. Étude de trajectoires d’indice de masse corporelle et de tour de taille sur 18 ans et leur impact sur les marqueurs de la fonction et atteinte rénale dans la cohorte STANISLAS. Rev Epidemiol Sante Publique 2021. [DOI: 10.1016/j.respe.2020.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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26
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Magnes T, Wagner S, Thorner AR, Neureiter D, Klieser E, Rinnerthaler G, Weiss L, Huemer F, Zaborsky N, Steiner M, Weis S, Greil R, Egle A, Melchardt T. Clonal evolution in diffuse large B-cell lymphoma with central nervous system recurrence. ESMO Open 2021; 6:100012. [PMID: 33399078 PMCID: PMC7807834 DOI: 10.1016/j.esmoop.2020.100012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/05/2020] [Accepted: 11/10/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The prognosis of patients with secondary central nervous system lymphoma (SCNSL) is poor and despite massive advances in understanding the mutational landscape of primary diffuse large B-cell lymphoma (DLBCL), the genetic comparison to SCNSL is still lacking. We therefore collected paired samples from six patients with DLBCL with available biopsies from a lymph node (LN) at primary diagnosis and the central nervous system (CNS) at recurrence. PATIENTS AND METHODS A targeted, massively parallel sequencing approach was used to analyze 216 genes recurrently mutated in DLBCL. Healthy tissue from each patient was also sequenced in order to exclude germline mutations. The results of the primary biopsies were compared with those of the CNS recurrences to depict the genetic background of SCNSL and evaluate clonal evolution. RESULTS Sequencing was successful in five patients, all of whom had at least one discordant mutation that was not detected in one of their samples. Four patients had mutations that were found in the CNS but not in the primary LN. Discordant mutations were found in genes known to be important in lymphoma biology such as MYC, CARD11, EP300 and CCND3. Two patients had a Jaccard similarity coefficient below 0.5 indicating substantial genetic differences between the primary LN and the CNS recurrence. CONCLUSIONS This analysis gives an insight into the genetic landscape of SCNSL and confirms the results of our previous study on patients with systemic recurrence of DLBCL with evidence of substantial clonal diversification at relapse in some patients, which might be one of the mechanisms of treatment resistance.
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Affiliation(s)
- T Magnes
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - S Wagner
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - A R Thorner
- Center for Cancer Genomics, Dana-Farber Cancer Institute, Boston, USA
| | - D Neureiter
- Department of Pathology, Paracelsus Medical University, Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria
| | - E Klieser
- Department of Pathology, Paracelsus Medical University, Salzburg, Austria
| | - G Rinnerthaler
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria
| | - L Weiss
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria
| | - F Huemer
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria
| | - N Zaborsky
- Cancer Cluster Salzburg, Salzburg, Austria; Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Salzburg, Austria
| | - M Steiner
- Cancer Cluster Salzburg, Salzburg, Austria; Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Salzburg, Austria
| | - S Weis
- Division of Neuropathology, Department of Pathology and Neuropathology, Kepler University Hospital and School of Medicine, Johannes Kepler University, Linz, Austria
| | - R Greil
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria; Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Salzburg, Austria
| | - A Egle
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria; Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Salzburg, Austria
| | - T Melchardt
- Department of Internal Medicine III with Haematology, Medical Oncology, Haemostaseology, Infectiology and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria; Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Salzburg, Austria.
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Trum M, Islam MMT, Lebek S, Baier M, Hegner P, Eaton P, Maier LS, Wagner S. Inhibition of cardiac potassium currents by oxidation-activated protein kinase A contributes to early afterdepolarizations in the heart. Am J Physiol Heart Circ Physiol 2020; 319:H1347-H1357. [PMID: 33035439 PMCID: PMC7792712 DOI: 10.1152/ajpheart.00182.2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS) have been shown to prolong cardiac action potential duration resulting in afterdepolarizations, the cellular basis of triggered arrhythmias. As previously shown, protein kinase A type I (PKA I) is readily activated by oxidation of its regulatory subunits. However, the relevance of this mechanism of activation for cardiac pathophysiology is still elusive. In this study, we investigated the effects of oxidation-activated PKA I on cardiac electrophysiology. Ventricular cardiomyocytes were isolated from redox-dead PKA-RI Cys17Ser knock-in (KI) and wild-type (WT) mice and exposed to H2O2 (200 µmol/L) or vehicle (Veh) solution. In WT myocytes, exposure to H2O2 significantly increased oxidation of the regulatory subunit I (RI) and thus its dimerization (threefold increase in PKA RI dimer). Whole cell current clamp and voltage clamp were used to measure cardiac action potentials (APs), transient outward potassium current (Ito) and inward rectifying potassium current (IK1), respectively. In WT myocytes, H2O2 exposure significantly prolonged AP duration due to significantly decreased Ito and IK1 resulting in frequent early afterdepolarizations (EADs). Preincubation with the PKA-specific inhibitor Rp-8-Br-cAMPS (10 µmol/L) completely abolished the H2O2-dependent decrease in Ito and IK1 in WT myocytes. Intriguingly, H2O2 exposure did not prolong AP duration, nor did it decrease Ito, and only slightly enhanced EAD frequency in KI myocytes. Treatment of WT and KI cardiomyocytes with the late INa inhibitor TTX (1 µmol/L) completely abolished EAD formation. Our results suggest that redox-activated PKA may be important for H2O2-dependent arrhythmias and could be important for the development of specific antiarrhythmic drugs.NEW & NOTEWORTHY Oxidation-activated PKA type I inhibits transient outward potassium current (Ito) and inward rectifying potassium current (IK1) and contributes to ROS-induced APD prolongation as well as generation of early afterdepolarizations in murine ventricular cardiomyocytes.
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Affiliation(s)
- M. Trum
- 1Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - M. M. T. Islam
- 2Department of Biochemistry and Molecular Biology, University of Dhaka, Bangladesh
- 3Department of Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - S. Lebek
- 1Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - M. Baier
- 1Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - P. Hegner
- 1Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - P. Eaton
- 4The William Harvey Research Institute, Charterhouse Square, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - L. S. Maier
- 1Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - S. Wagner
- 1Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
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28
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Lebek S, Wester M, Tafelmeier M, Fisser C, Hirt S, Schopka S, Schmid C, Maier L, Arzt M, Wagner S. Abnormal P-waves found in patients with sleep-disordered breathing are associated with triggered pro-arrhythmic activity. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Sleep-disordered breathing (SDB) is frequently associated with atrial arrhythmias, but diagnostic markers that predict the propensity for atrial arrhythmias are missing. Abnormal P-wave terminal force in lead V1 (PTFV1) has been associated with atrial structural/electrical remodeling and arrhythmias.
Purpose
Here we investigate the association of triggered pro-arrhythmic activity with abnormal PTFV1 in human right atrial appendage biopsies of patients without and with SDB.
Methods
30 patients undergoing elective coronary artery bypass grafting were screened for SDB by polygraphy. An apnoea-hypopnea index (AHI) of ≥15/h defined SDB. PTFV1 was measured as product of negative P-wave amplitude and duration in lead V1 and was defined as abnormal if >4000 ms*μV. Ca/Calmodulin-dependent protein kinase II (CaMKII) activity was measured in human right atrial appendage biopsies by a specific HDAC4 pull-down assay. Premature atrial contractions (PACs) were triggered by exposure to 100 nM isoproterenol (at 3.5 mM [Ca]o) in human atrial trabeculae. PACs severity was classified by a score from 0 points (no arrhythmias) to 5 points (salve). In addition, atrial fibrosis was quantified by Masson's trichrome stain in cryo-sectioned atrial tissue. Multivariate linear regression analyses were performed accounting for age, sex, BMI, existing AF, heart failure, diabetes, and creatinine.
Results
Interestingly, the AHI was independently associated with the magnitude of PTFV1 (fig. A+B, B=57.47±21.03, R2=0.48, P=0.01). Importantly, patients with an abnormal PTFV1 had a significantly increased CaMKII activity (fig. C, P=0.04) and showed significantly more severe triggered PACs (fig. D, P=0.02). Moreover, the magnitude of PTFV1 correlated significantly and independently with PAC severity (fig. D, B=0.0005±0.0002, R2=0.50, P=0.03). Consistently, these arrhythmias could be significantly reduced by acute CaMKII inhibition (5 μM KN93, P<0.01), which abolished the correlation between PTFV1 and PAC severity (P=N.S.). Surprisingly, atrial fibrosis was significantly decreased in patients with an abnormal PTFV1 (fig. E, P=0.02), suggesting that abnormal PTFV1 is a marker of proarrhythmic atrial electrical remodeling of functional cardiomyocytes but not of fibrotic tissue.
Conclusion
The severity of sleep-disordered breathing (AHI) is independently associated with an abnormal PTFV1. Intriguingly, this abnormality is associated with an increased CaMKII activity and with CaMKII-dependent arrhythmias, suggesting PTFV1 to be a potential tool to evaluate the pro-arrhythmic risk of patients with SDB.
Figure 1
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): Part of this study was funded by Philips Respironics.
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Affiliation(s)
- S Lebek
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Wester
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Tafelmeier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Fisser
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Hirt
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Schopka
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Schmid
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - L.S Maier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Arzt
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Wagner
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
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29
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Tarnowski D, Islam M, Trum M, Eaton P, Maier L, Wagner S, Sag C. Redox-activated protein kinase A Type I (PKA RI) exerts a protective role during pathological pressure overload. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Phosphorylation of L-type calcium channels (LTCC) by cAMP-dependent protein kinase A (PKA) increases calcium current (ICa). However, it is unclear if PKA-dependent regulation of ICa is impaired in heart failure (HF) despite evidence for impaired β-adrenergic signaling. Recently, a novel PKA activation pathway by oxidation of regulatory subunit I (RI) has been identified.
Objective
We investigated the impact of redox-activated PKA for regulation of ICa, intracellular calcium (Ca) handling and contractile function in a pressure overload heart failure mouse model.
Methods
Knock-in mice (KI) that lack redox-dependent PKA activation (exchange of cysteine 17 of RI with serine) were compared to wild-type (WT) at baseline, 7 days and 6 weeks after transverse aortic constriction (TAC). Mouse echocardiography was performed to evaluate in-vivo cardiac function. ICa was measured by whole-cell patch clamp, PKA activity, cAMP levels, and protein levels of central Ca handling proteins were assessed at different time points in vitro.
Results
At baseline, no alterations of left ventricular (LV) function (echocardiography) were observed between WT and KI. TAC induced a significant RI oxidation in WT but not KI mice. Despite this difference, at 7 days after TAC, development of LV hypertrophy and impairment of systolic LV function in vivo were similar between WT and KI. Compared to baseline, 7 days after TAC a significant stimulation of peak ICa was observed in WT. In contrast to WT, the stimulation of peak ICa was absent in KI mice at 7 days after TAC. This impairment in peak ICa occurred despite a comparable increase in global PKA activity (ELISA), which was most likely due to increased cAMP levels in our TAC model (assessed by FLIM-FRET). Notably, cAMP levels were comparably increased in between groups (ELISA). Importantly, at 6 weeks after TAC, WT mice showed a mild additional deterioration of systolic LV function in vivo. In contrast, LV function was significantly more impaired in KI mice 6 weeks after TAC, which was accompanied by a significant increase in KI mice mortality. Comparing 6 weeks to 7 days after TAC, there was no stimulation of peak ICa in WT and even a significant decrease in peak ICa in KI mice. In accordance, PKA-dependent LTCC phosphorylation was absent in KI mice 6 weeks after TAC (western blotting).
Conclusion
Redox-activated PKA seems to exert a protective role by stimulation of ICa during pressure overload.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Deutsche Forschungsgemeinschaft
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Affiliation(s)
- D Tarnowski
- University hospital Regensburg, Regensburg, Germany
| | - M.M.T Islam
- Dhaka Medical College and Hospital, Department of Biochemistry and Molecular Biology, Dhaka, Bangladesh
| | - M Trum
- University hospital Regensburg, Regensburg, Germany
| | - P Eaton
- King's College London, Cardiovascular Research, London, United Kingdom
| | - L.S Maier
- University hospital Regensburg, Regensburg, Germany
| | - S Wagner
- University hospital Regensburg, Regensburg, Germany
| | - C.M Sag
- University hospital Regensburg, Regensburg, Germany
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30
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Smyth T, Brothwood J, Fazal L, Hearn K, Hindley C, Johnson C, Jones M, Kandola N, Lyons J, Martins V, Miyadera K, Muench S, Munck J, Nakatsuru Y, Ochiiwa H, Saini H, Shah A, Wagner S, Wilsher N, Wallis N. Combined inhibition of SHP2 and ERK enhances anti-tumour effects in preclinical models. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)31194-1] [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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31
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Dieterle M, Witthauer L, Fix A, Abt S, Achenbach P, Adlarson P, Afzal F, Aguar Bartolome P, Ahmed Z, Annand JRM, Arends HJ, Bashkanov M, Beck R, Biroth M, Borisov N, Braghieri A, Briscoe WJ, Cividini F, Collicott C, Costanza S, Denig A, Dolzhikov AS, Downie EJ, Drexler P, Gardner S, Ghosal D, Glazier DI, Gorodnov I, Gradl W, Günther M, Gurevich D, Heijkenskjöld L, Hornidge D, Huber GM, Käser A, Kashevarov VL, Kay S, Keshelashvili I, Kondratiev R, Korolija M, Krusche B, Lazarev A, Lisin V, Livingston K, Lutterer S, MacGregor IJD, Manley DM, Martel PP, Metag V, Meyer W, Middleton DG, Miskimen R, Mornacchi E, Mullen C, Mushkarenkov A, Neganov A, Neiser A, Oberle M, Ostrick M, Otte PB, Paudyal D, Pedroni P, Polonski A, Powell A, Prakhov SN, Reicherz G, Ron G, Rostomyan T, Sarty A, Sfienti C, Sokhoyan V, Spieker K, Steffen O, Strakovsky II, Strub T, Supek I, Thiel A, Thiel M, Thomas A, Unverzagt M, Usov YA, Wagner S, Walford NK, Watts DP, Werthmüller D, Wettig J, Wolfes M, Zana LA. Helicity-Dependent Cross Sections for the Photoproduction of π^{0} Pairs from Nucleons. Phys Rev Lett 2020; 125:062001. [PMID: 32845675 DOI: 10.1103/physrevlett.125.062001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/17/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
The double-polarization observable E and helicity-dependent cross sections σ_{1/2}, σ_{3/2} have been measured for the photoproduction of π^{0} pairs off quasifree protons and neutrons at the Mainz MAMI accelerator with the Crystal Ball/TAPS setup. A circularly polarized photon beam was produced by bremsstrahlung from longitudinally polarized electrons and impinged on a longitudinally polarized deuterated butanol target. The reaction products were detected with an almost 4π covering calorimeter. The results reveal for the first time the helicity- and isospin-dependent structure of the γN→Nπ^{0}π^{0} reaction. They are compared to predictions from reaction models in view of nucleon resonance contributions and also to a refit of one model that predicted results for the proton and for the neutron target. The comparison of the prediction and the refit demonstrates the large impact of the new data.
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Affiliation(s)
- M Dieterle
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - L Witthauer
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - A Fix
- Laboratory of Mathematical Physics, Tomsk Polytechnic University, 634034 Tomsk, Russia
| | - S Abt
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - P Achenbach
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - P Adlarson
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - F Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - P Aguar Bartolome
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - Z Ahmed
- University of Regina, Regina, Saskatchewan S4S-0A2 Canada
| | - J R M Annand
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - H J Arends
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Bashkanov
- SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - M Biroth
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N Borisov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Braghieri
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - W J Briscoe
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - F Cividini
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - C Collicott
- Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada
| | - S Costanza
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - A Denig
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - A S Dolzhikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - E J Downie
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - P Drexler
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- II. Physikalisches Institut, University of Giessen, D-35392 Giessen, Germany
| | - S Gardner
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - D Ghosal
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - D I Glazier
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
- SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - I Gorodnov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - W Gradl
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Günther
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - D Gurevich
- Institute for Nuclear Research, RU-125047 Moscow, Russia
| | - L Heijkenskjöld
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Hornidge
- Mount Allison University, Sackville, New Brunswick E4L1E6, Canada
| | - G M Huber
- University of Regina, Regina, Saskatchewan S4S-0A2 Canada
| | - A Käser
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - V L Kashevarov
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Kay
- SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - I Keshelashvili
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - R Kondratiev
- Institute for Nuclear Research, RU-125047 Moscow, Russia
| | - M Korolija
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - B Krusche
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - A Lazarev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V Lisin
- Institute for Nuclear Research, RU-125047 Moscow, Russia
| | - K Livingston
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - S Lutterer
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - I J D MacGregor
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - D M Manley
- Kent State University, Kent, Ohio 44242, USA
| | - P P Martel
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- Mount Allison University, Sackville, New Brunswick E4L3B5, Canada
| | - V Metag
- II. Physikalisches Institut, University of Giessen, D-35392 Giessen, Germany
| | - W Meyer
- Institut für Experimentalphysik, Ruhr Universität, 44780 Bochum, Germany
| | - D G Middleton
- Mount Allison University, Sackville, New Brunswick E4L3B5, Canada
| | - R Miskimen
- University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - E Mornacchi
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - C Mullen
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - A Mushkarenkov
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
- University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - A Neganov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Neiser
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Oberle
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - M Ostrick
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - P B Otte
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Paudyal
- University of Regina, Regina, Saskatchewan S4S-0A2 Canada
| | - P Pedroni
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - A Polonski
- Institute for Nuclear Research, RU-125047 Moscow, Russia
| | - A Powell
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - S N Prakhov
- University of California Los Angeles, Los Angeles, California 90095-1547, USA
| | - G Reicherz
- Institut für Experimentalphysik, Ruhr Universität, 44780 Bochum, Germany
| | - G Ron
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - T Rostomyan
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - A Sarty
- Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada
| | - C Sfienti
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - V Sokhoyan
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - K Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - O Steffen
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - I I Strakovsky
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - T Strub
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - I Supek
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - M Thiel
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - A Thomas
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Unverzagt
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - Yu A Usov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Wagner
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N K Walford
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
| | - D P Watts
- SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - D Werthmüller
- Department of Physics, University of Basel, CH-4056 Basel, Switzerland
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - J Wettig
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Wolfes
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - L A Zana
- SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
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Alden LE, Matthews LR, Wagner S, Fyfe T, Randall C, Regehr C, White M, Buys N, Carey MG, Corneil W, White N, Fraess-Phillips A, Krutop E. Systematic literature review of psychological interventions for first responders. Work & Stress 2020. [DOI: 10.1080/02678373.2020.1758833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- L. E. Alden
- Department of Psychology, University of British Columbia, Vancouver, Canada
| | - L. R. Matthews
- Faculty of Health Sciences, University of Sydney, Sydney, Australia
| | - S. Wagner
- School of Health Sciences, University of Northern British Columbia, Prince George, Canada
| | - T. Fyfe
- School of Health Sciences, University of Northern British Columbia, Prince George, Canada
| | - C. Randall
- School of Allied Health Sciences, Griffith University, Brisbane, Australia
| | - C. Regehr
- Faculty of Social Work, University of Toronto, Toronto Ontario, Canada
| | - M. White
- Department of Family Practice, University of British Columbia, Vancouver, Canada
| | - N. Buys
- School of Allied Health Sciences, Griffith University, Brisbane, Australia
| | - M. G. Carey
- School of Nursing, University of Rochester, Rochester, NY, USA
| | - W. Corneil
- School of Health Sciences, University of Ottawa, Ottawa, Canada
| | - N. White
- School of Health Sciences, University of Northern British Columbia, Prince George, Canada
| | - A. Fraess-Phillips
- School of Health Sciences, University of Northern British Columbia, Prince George, Canada
| | - E. Krutop
- School of Health Sciences, University of Northern British Columbia, Prince George, Canada
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Bashkanov M, Watts DP, Kay SJD, Abt S, Achenbach P, Adlarson P, Afzal F, Ahmed Z, Akondi CS, Annand JRM, Arends HJ, Beck R, Biroth M, Borisov N, Braghieri A, Briscoe WJ, Cividini F, Collicott C, Costanza S, Denig A, Downie EJ, Drexler P, Fegan S, Fix A, Gardner S, Ghosal D, Glazier DI, Gorodnov I, Gradl W, Günther M, Gurevich D, Heijkenskjöld L, Hornidge D, Huber GM, Käser A, Kashevarov VL, Korolija M, Krusche B, Lazarev A, Livingston K, Lutterer S, MacGregor IJD, Manley DM, Martel PP, Miskimen R, Mornacchi E, Mullen C, Neganov A, Neiser A, Ostrick M, Otte PB, Paudyal D, Pedroni P, Powell A, Prakhov SN, Ron G, Sarty A, Sfienti C, Sokhoyan V, Spieker K, Steffen O, Strakovsky II, Strub T, Supek I, Thiel A, Thiel M, Thomas A, Usov YA, Wagner S, Walford NK, Werthmüller D, Wettig J, Wolfes M, Zachariou N, Zana LA. Signatures of the d^{*}(2380) Hexaquark in d(γ,pn[over →]). Phys Rev Lett 2020; 124:132001. [PMID: 32302204 DOI: 10.1103/physrevlett.124.132001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/30/2020] [Accepted: 03/02/2020] [Indexed: 06/11/2023]
Abstract
We report a measurement of the spin polarization of the recoiling neutron in deuterium photodisintegration, utilizing a new large acceptance polarimeter within the Crystal Ball at MAMI. The measured photon energy range of 300-700 MeV provides the first measurement of recoil neutron polarization at photon energies where the quark substructure of the deuteron plays a role, thereby providing important new constraints on photodisintegration mechanisms. A very high neutron polarization in a narrow structure centered around E_{γ}∼570 MeV is observed, which is inconsistent with current theoretical predictions employing nucleon resonance degrees of freedom. A Legendre polynomial decomposition suggests this behavior could be related to the excitation of the d^{*}(2380) hexaquark.
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Affiliation(s)
- M Bashkanov
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - D P Watts
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - S J D Kay
- University of Regina, Regina, SK S4S0A2 Canada
| | - S Abt
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - P Achenbach
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - P Adlarson
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - F Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - Z Ahmed
- University of Regina, Regina, SK S4S0A2 Canada
| | - C S Akondi
- Kent State University, Kent, Ohio 44242, USA
| | - J R M Annand
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - H J Arends
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - M Biroth
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N Borisov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Braghieri
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - W J Briscoe
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - F Cividini
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - C Collicott
- Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada
| | - S Costanza
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
- Dipartimento di Fisica, Università di Pavia, I-27100 Pavia, Italy
| | - A Denig
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - E J Downie
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - P Drexler
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- II. Physikalisches Institut, University of Giessen, D-35392 Giessen, Germany
| | - S Fegan
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - A Fix
- Tomsk Polytechnic University, 634034 Tomsk, Russia
| | - S Gardner
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - D Ghosal
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - D I Glazier
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - I Gorodnov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - W Gradl
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Günther
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - D Gurevich
- Institute for Nuclear Research, RU-125047 Moscow, Russia
| | - L Heijkenskjöld
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Hornidge
- Mount Allison University, Sackville, New Brunswick E4L1E6, Canada
| | - G M Huber
- University of Regina, Regina, SK S4S0A2 Canada
| | - A Käser
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - V L Kashevarov
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - M Korolija
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - B Krusche
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - A Lazarev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - K Livingston
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - S Lutterer
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - I J D MacGregor
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - D M Manley
- Kent State University, Kent, Ohio 44242, USA
| | - P P Martel
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
- Mount Allison University, Sackville, New Brunswick E4L1E6, Canada
| | - R Miskimen
- University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - E Mornacchi
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - C Mullen
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - A Neganov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Neiser
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Ostrick
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - P B Otte
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - D Paudyal
- University of Regina, Regina, SK S4S0A2 Canada
| | - P Pedroni
- INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy
| | - A Powell
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - S N Prakhov
- University of California Los Angeles, Los Angeles, California 90095-1547, USA
| | - G Ron
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - A Sarty
- Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada
| | - C Sfienti
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - V Sokhoyan
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - K Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - O Steffen
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - I I Strakovsky
- Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA
| | - T Strub
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - I Supek
- Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany
| | - M Thiel
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - A Thomas
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - Yu A Usov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Wagner
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N K Walford
- Department of Physics, University of Basel, Ch-4056 Basel, Switzerland
| | - D Werthmüller
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - J Wettig
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - M Wolfes
- Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany
| | - N Zachariou
- Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
| | - L A Zana
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
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Engelmann J, Dreimüller N, Lieb K, Tadic A, Wollschläger D, Wagner S. The development of body mass index (BMI) in depressed patients during an antidepressant treatment and its effects on depressive symptomatology. PHARMACOPSYCHIATRY 2020. [DOI: 10.1055/s-0039-3402999] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- J Engelmann
- Klinik für Psychiatrie und Psychotherapy, Universitätsmedizin Mainz, Germany
| | - N Dreimüller
- Klinik für Psychiatrie und Psychotherapy, Universitätsmedizin Mainz, Germany
| | - K Lieb
- Klinik für Psychiatrie und Psychotherapy, Universitätsmedizin Mainz, Germany
| | - A Tadic
- Klinik für Psychiatrie und Psychotherapy, Universitätsmedizin Mainz, Germany
| | - D Wollschläger
- Klinik für Psychiatrie und Psychotherapy, Universitätsmedizin Mainz, Germany
| | - S Wagner
- Klinik für Psychiatrie und Psychotherapy, Universitätsmedizin Mainz, Germany
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Wagner S, Merkling T, Metzger M, Bankir L, Laville M, Frimat L, Combe C, Jacquelinet C, Fouque D, Bénédicte S, Massy Z. SAT-095 URINE OSMOLARITY AND CHRONIC KIDNEY DISEASE PROGRESSION IN THE CKD-REIN COHORT. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Feroz R, Long J, Gupta M, Kunselman A, Wagner S. 68: Characteristics of randomized controlled trials in gynecological surgery registered on clinicaltrials.gov. Am J Obstet Gynecol 2020. [DOI: 10.1016/j.ajog.2019.12.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Trum M, Wagner S, Maier LS, Mustroph J. CaMKII and GLUT1 in heart failure and the role of gliflozins. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165729. [PMID: 32068116 DOI: 10.1016/j.bbadis.2020.165729] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/14/2022]
Abstract
Empagliflozin, a selective sodium-glucose co-transporter 2 (SGLT2) inhibitor, has been shown to reduce mortality and hospitalization for heart failure in diabetic patients in the EMPA-REG-OUTCOME trial (Zinman et al., 2015). Surprisingly, dapagliflozin, another SGLT2 inhibitor, exerted comparable effects on clinical endpoints even in the absence of diabetes mellitus (DAPA-HF trial) (McMurray et al., 2019). There is a myriad of suggested underlying mechanisms ranging from improved glycemic control and hemodynamic effects to altered myocardial metabolism, inflammation, neurohumoral activation and intracellular ion homeostasis. Here, we review the effects of gliflozins on cardiac electro-mechanical coupling with an emphasis on novel CaMKII-mediated pathways and on cardiac glucose and ketone metabolism in the failing heart. We focus on empagliflozin as it is the gliflozin with the most abundant experimental evidence for direct effects on the heart. Where useful, we aim to compare empagliflozin to other gliflozins. To facilitate understanding of empagliflozin-induced alterations, we first give a short summary of the pathophysiological role of CaMKII in heart failure, as well as cardiac changes of glucose and ketone body metabolism in the failing heart.
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Affiliation(s)
- M Trum
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - S Wagner
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - L S Maier
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - J Mustroph
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany.
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Bertsch T, Erbacher G, Corda D, Damstra RJ, van Duinen K, Elwell R, van Esch-Smeenge J, Faerber G, Fetzer S, Fink J, Fleming A, Frambach Y, Gordon K, Hardy D, Hendrickx A, Hirsch T, Koet B, Mallinger P, Miller A, Moffatt C, Torio-Padron N, Ure C, Wagner S, Zähringer T. Lipoedema – myths and facts, Part 5. Phlebologie 2020. [DOI: 10.1055/a-1012-7670] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractThe four previous articles in this series addressed the myths and facts surrounding lipoedema. We have shown that there is no scientific evidence at all for the key statements made about lipoedema – which are published time and time again. The main result of this “misunderstanding” of lipoedema is a therapeutic concept that misses the mark. The patient’s real problems are overlooked.The national and especially the international response to the series, which can be read in both German and English, has been immense and has exceeded all our expectations. The numerous reactions to our articles make it clear that in other countries, too, the fallacies regarding lipoedema have led to an increasing discrepancy between the experience of healthcare workers and the perspective of patients and self-help groups, based on misinformation mostly generated by the medical profession.Parts 1 to 4 in this series of articles on the myths surrounding lipoedema have made it clear that we have to radically change the view of lipoedema that has been held for decades. Changing our perspective means getting away from the idea of “oedema in lipoedema” – and hence away from the dogma that decongestion is absolutely necessary – and towards the actual problems faced by our patients with lipoedema. Such a paradigm shift in a disease that has been described in the same way for decades cannot be left to individuals but must be put on a much broader footing. For this reason, the lead author of this series of articles invited renowned lipoedema experts from various European countries to discussions on the subject. Experts from seven different countries took part in the two European Lipoedema Forums, with the goal of establishing a consensus. The consensus reflects the experts’ shared view on the disease, having scrutinized the available literature, and having taken into account the many years of clinical practice with this particular patient group. Appropriate to the clinical complexity of lipoedema, participants from different specialties provided an interdisciplinary approach. Nearly all of the participants in the European Lipoedema Forum had already published work on lipoedema, had been involved in drawing up their national lipoedema guidelines, or were on the executive board of their respective specialty society.In this fifth and final part of our series on lipoedema, we will summarise the relevant findings of this consensus, emphasising the treatment of lipoedema as we now recommend it. As the next step, the actual consensus paper “European Best Practice of Lipoedema” will be issued as an international publication.Instead of looking at the treatment of oedema, the consensus paper will focus on treatment of the soft tissue pain, as well as the psychological vulnerability of patients with lipoedema. The relationship between pain perception and the patient’s mental health is recognised and dealt with specifically. The consensus also addresses the problem of self-acceptance, and this plays a prominent role in the new therapeutic concept. The treatment of obesity provides a further pillar of treatment. Obesity is recognised as being the most common comorbid condition by far and an important trigger of lipoedema. Bariatric surgery should therefore also be considered for patients with lipoedema who are morbidly obese. The expert group upgraded the importance of compression therapy and appropriate physical activity, as the demonstrated anti-inflammatory effects directly improve the patients’ symptoms. Patients will be provided with tools for personalised self-management in order to sustain sucessful treatment. Should conservative therapy fail to improve the symptoms, liposuction may be considered in strictly defined circumstances.The change in the view of lipoedema that we describe here brings the patients’ actual symptoms to the forefront. This approach allows us to focus on more comprehensive treatment that is not only more effective but also more sustainable than focusing on the removal of non-existent oedema.
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Affiliation(s)
- Tobias Bertsch
- Foeldiclinic Hinterzarten – European Center of Lymphology, Germany
| | | | - D. Corda
- Polimedica San Lanfranco, Pavia, Italy
| | - R. J. Damstra
- Center of Expertise for Lymphovascular Medicine, Nij Smellinghe, Drachten, The Netherlands
| | - K. van Duinen
- Center of Expertise for Lymphovascular Medicine, Nij Smellinghe, Drachten, The Netherlands
| | - R. Elwell
- University-Hospitals of North Midlands, UK
| | - J. van Esch-Smeenge
- Center of Expertise for Lymphovascular Medicine, Nij Smellinghe, Drachten, The Netherlands
| | - G. Faerber
- Zentrum für Gefäßmedizin, Vascular Medicine, Hamburg, Germany
| | - S. Fetzer
- Patient self-help organisation Lipoedema UK
| | - J. Fink
- Department of General and Visceral Surgery at the Medical Center – University of Freiburg, Germany
| | - A. Fleming
- Rehabilitation-Centre Reade, Amsterdam, Netherlands
| | - Y. Frambach
- Hanse-Klinik, Clinic for Liposuction, Lübeck, Germany
| | | | | | - A. Hendrickx
- Center of Expertise for Lymphovascular Medicine, Nij Smellinghe, Drachten, The Netherlands
| | - T. Hirsch
- Praxis für Innere Medizin und Gefäßkrankheiten, Vascular Medicine, Halle, Germany
| | - B. Koet
- Center of Expertise for Lymphovascular Medicine, Nij Smellinghe, Drachten, The Netherlands
| | | | - A. Miller
- Dermatologische Praxis, Berlin, Germany
| | | | | | - C. Ure
- Lymphklinik Wolfsberg, Austria
| | | | - T. Zähringer
- Foeldiclinic Hinterzarten – European Center of Lymphology, Germany
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van den Berge M, Wagner S, Meijers E, Kokshoorn B, Kloosterman A, van der Scheer M, Sijen T. Minimizing hand-to-glove DNA contamination. Forensic Science International: Genetics Supplement Series 2019. [DOI: 10.1016/j.fsigss.2019.09.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Heilig C, Hübschmann D, Kopp HG, Metzeler K, Richter S, Hermes B, von Bubnoff N, Kindler T, Siveke J, Wagner S, Ochsenreither S, Süße H, Brors B, Benner A, Jäger D, Von Kalle C, Glimm H, Gröschel S, Fröhling S, Schlenk R. Randomized phase II study of trabectedin/olaparib compared to physician’s choice in subjects with previously treated advanced or recurrent solid tumors harboring dna repair deficiencies. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz268.106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lebek S, Tafelmeier M, Schach C, Schopka S, Holzamer A, Schmid C, Maier LS, Arzt M, Wagner S. P4521C-reactive protein as a predictor for diastolic dysfunction in patients with sleep-disordered breathing. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Sleep-disordered breathing (SDB) is often associated with left ventricular diastolic dysfunction, but the mechanisms are poorly understood. SDB may increase systemic inflammation that could induce myocardial fibrosis leading to diastolic dysfunction.
Purpose
Systemic inflammation and diastolic dysfunction were analysed in patients with SDB.
Methods
295 patients undergoing coronary artery bypass grafting were included in the prospective observational trial CONSIDER-AF (NCT02877745). They were screened for SDB in the preoperative night and an apnoea-hypopnea index (AHI) of ≥15/h defined SDB. Preoperative echocardiography was used to measure the ratio of early (E) and late (A) diastolic transmitral flows (E/A), early diastolic mitral annular velocity (E'), the ratio E/E', LA volume index, and tricuspid regurgitation velocity. Left ventricular diastolic dysfunction was graded I-IV according to current guidelines. Patients with ventricular ejection fraction of less than 45% were excluded. We used serum C-reactive protein (CRP) as a marker for systemic inflammation, resulting in a full data set for 170 patients.
Results
In patients with SDB, serum CRP levels were 3.036 mg/L higher than in control patients (95% confidence interval: −0.393–6.466, P=0.082). Intriguingly, the severity of SDB (AHI) correlated significantly with the CRP levels (coefficient B: 0.13±0.06, P=0.021). CRP also correlated with the severity of diastolic dysfunction (coefficient B: 0.010±0.004, P=0.009). Importantly, multivariable linear regression analysis accounting for the potential confounders age, sex, body-mass index, existing atrial fibrillation, diabetes, AHI, and creatinine indicated that CRP was an independent predictor for the severity of diastolic dysfunction (coefficient B: 0.009±0.004, P=0.016). Interestingly, the latter effect was still present considering just patients with SDB (coefficient B: 0.013±0.005, P=0.015, N=72), but was completely abolished in patients without SDB (coefficient B: 0.001±0.007, P=0.912, N=98), indicating a potential SDB-dependence.
Conclusion
Systemic inflammation (CRP) is associated with the severity of SDB (AHI). Interestingly, only in SDB patients CRP predicts significantly and independently the severity of diastolic dysfunction. Consequently, anti-inflammatory therapeutic strategies could be beneficial for patients with SDB and diastolic dysfunction.
Acknowledgement/Funding
This study was supported by Philips Respironics and the Medical Faculty of the University of Regensburg.
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Affiliation(s)
- S Lebek
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Tafelmeier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Schach
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Schopka
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - A Holzamer
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Schmid
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - L S Maier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Arzt
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Wagner
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
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Lebek S, Schach C, Reuthner K, Tafelmeier M, Camboni D, Rupprecht L, Schmid C, Maier LS, Arzt M, Wagner S. P3508A novel mouse model of sleep-disordered breathing is associated with contractile dysfunction and CaMKII overexpression. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Patients with sleep-disordered breathing (SDB) develop arrhythmias and contractile dysfunction, but the mechanisms are poorly understood, possibly due to the lack of mouse models that mimic airway obstruction in spontaneously sleeping mice. Interestingly, New Zealand obese mice have been shown to develop airway obstruction with inspiratory flow limitation resulting in apneas, but these mice also develop diabetes.
Purpose
We developed a novel mouse model of increased airway obstruction in spontaneously sleeping lean mice and investigated the impact on sleep-related apneas and contractile function.
Methods and results
Male C57BL6 mice at 8–12 weeks of age were subjected to polytetrafluoroethylene (PTFE) injection (100 μl) into the tongue. This resulted in an increased tongue volume and reduced pharyngeal luminal diameter. Conscious mice behave normal and there was no difference in body weight between PTFE injected mice and untreated littermates (control). Whole body plethysmography was used to monitor spontaneous breathing for 8h in a quiet environment. Interestingly, compared to control, mice with PTFE injection showed a significantly increased frequency of apneas (lasting >1s, fig. A, * indicated P<0.05, t-test). Echocardiographic analysis revealed that ejection fraction was significantly reduced in PTFE-treated mice 8 weeks after surgery (vs. control, fig. B). In accordance, the developed force of isolated papillary muscles from hearts of PTFE mice was significantly reduced compared to control (fig. C). Ca/calmodulin-dependent protein kinase II (CaMKII) has been implicated in the development of heart failure. Intriguingly, compared to control, CaMKII expression was significantly increased in ventricular heart homogenates of PTFE-treated mice (fig. D). Moreover, the magnitude of CaMKII overexpression correlated significantly with the frequency of apneas (fig. E). Papillary muscle post-pause contractions can be used as measure of diastolic sarcoplasmic reticulum (SR) Ca leak, which is known to be enhanced by CaMKII. Compared to control, post-pause contraction amplitude was significantly smaller in PTFE-treated mice, indicating an increased SR Ca leak (fig. F).
Figure 1
Conclusion
PTFE injection in mice results in an increased frequency of spontaneous apneas. PTFE-treated mice develop mild contractile dysfunction, which is accompanied by CaMKII overexpression. This novel mouse model offers great opportunities for investigation of sleep-related breathing disorders.
Acknowledgement/Funding
This study was supported by the Medical Faculty of the University of Regensburg (ReForM programme).
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Affiliation(s)
- S Lebek
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Schach
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - K Reuthner
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Tafelmeier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - D Camboni
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - L Rupprecht
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - C Schmid
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - L S Maier
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - M Arzt
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
| | - S Wagner
- University Hospital Regensburg, University Heart Centre Regensburg, Regensburg, Germany
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Wagner S, Merkling T, Metzger M, Bankir L, Fouque D, Laville M, Frimat L, Combe C, Massy Z, Stengel B. Consommation d’eau pure et progression vers l’insuffisance rénale terminale. Nephrol Ther 2019. [DOI: 10.1016/j.nephro.2019.07.026] [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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Gross J, Kim S, Wagner S, Grover A, Geary S, Pankuch M, Gondi V, Woodruff T. The Role of Proton Therapy to Preserve Ovarian Function and Reserve in Mice. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.977] [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: 11/29/2022]
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Bluemel B, Goelz H, Goldmann B, Grüger J, Hamel H, Loley K, Ludolph T, Meyer J, Miehlke S, Mohr A, Tüffers K, Usadel H, Wagner S, Wenzel H, Wiemer L, Vorreiter J, Eisele B, Hofreuter D, Glocker EO. Antimicrobial resistance of Helicobacter pylori in Germany, 2015 to 2018. Clin Microbiol Infect 2019; 26:235-239. [PMID: 31212078 DOI: 10.1016/j.cmi.2019.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 05/31/2019] [Accepted: 06/05/2019] [Indexed: 12/21/2022]
Abstract
OBJECTIVES National and international guidelines recommend empiric first-line treatments of individuals infected with Helicobacter pylori without prior antimicrobial susceptibility testing. For this reason, knowledge of primary resistance to first-line antibiotics such as clarithromycin is essential. We assessed the primary resistance of H. pylori in Germany to key antibiotics by molecular genetic methods and evaluated risk factors for the development of resistance. METHODS Gastric tissue samples of 1851 yet treatment-naïve H. pylori-positive patients were examined with real-time PCR or PCR and Sanger sequencing for mutations conferring resistance to clarithromycin, levofloxacin and tetracycline. Clinical and epidemiological data were documented and univariable and multivariable logistic regression analyses were conducted. RESULTS Overall primary resistances were 11.3% (210/1851) to clarithromycin, and 13.4% (201/1497) to levofloxacin; resistance to tetracycline (2.5%, 38/1497) was as low as combined resistance to clarithromycin/levofloxacin (2.6%, 39/1497). Female sex and prior antimicrobial therapies owing to unrelated bacterial infections were risk factors for clarithromycin resistance (adjusted OR (aOR) 2.3, 95% CI 1.6-3.4; and 2.6, 95% CI 1.5-4.5, respectively); older age was associated with levofloxacin resistance (aOR for those ≥65 years compared with those 18-35 years: 6.6, 95% CI 3.1-14.2). CONCLUSIONS Clarithromycin might still be recommended in first-line eradication therapies in yet untreated patients, but as nearly every tenth patient may carry clarithromycin-resistant H. pylori it may be advisable to rule out resistance ahead of treatment by carrying out susceptibility testing or prescribing an alternative therapy.
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Affiliation(s)
- B Bluemel
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - H Goelz
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | | | - J Grüger
- Department of Internal Medicine, Heilig-Geist-Hospital, Bensheim, Germany
| | - H Hamel
- Department of Internal Medicine, German Armed Forces Hospital Berlin, Berlin, Germany
| | - K Loley
- Medical Centre for Internal Medicine, Bocholt, Germany
| | - T Ludolph
- Department of Internal Medicine, District Hospital of Frankenberg, Frankenberg, Germany
| | - J Meyer
- Praxis für Gastroenterologie, Berlin, Germany
| | - S Miehlke
- University Centre for Oesophageal Diseases, University Hospital Eppendorf, Hamburg, Germany; Centre of Digestive Diseases, Internal Medicine Center Eppendorf, Hamburg, Germany
| | - A Mohr
- Internistische Gemeinschaftspraxis, Lübeck-Travemünde, Germany
| | - K Tüffers
- Department of Internal Medicine, St Johannes Hospital Dortmund, Dortmund, Germany
| | - H Usadel
- Department of Internal Medicine, Spital Schiers, Schiers, Switzerland
| | - S Wagner
- Department of Internal Medicine, Donau-Isar Clinical Centre, Deggendorf, Germany
| | - H Wenzel
- Gemeinschaftspraxis für Gastroenterologie, Wuppertal, Germany
| | - L Wiemer
- Department of Internal Medicine and Oncology, St Agnes Hospital, Bocholt, Germany
| | - J Vorreiter
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - B Eisele
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - D Hofreuter
- Institute of Laboratory Medicine, Brandenburg Hospital, Brandenburg Medical School, Brandenburg, Germany; German Federal Institute for Risk Assessment, Department of Biological Safety, Berlin, Germany
| | - E-O Glocker
- Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany; Institute of Laboratory Medicine, Brandenburg Hospital, Brandenburg Medical School, Brandenburg, Germany.
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Wagner S, Vlachogiannis G, De Haven Brandon A, Valenti M, Box G, Jenkins L, Mancusi C, Self A, Manodoro F, Assiotis I, Robinson P, Chauhan R, Rust AG, Matthews N, Eason K, Khan K, Starling N, Cunningham D, Sadanandam A, Isacke CM, Kirkin V, Valeri N, Whittaker SR. Correction: Suppression of interferon gene expression overcomes resistance to MEK inhibition in KRAS-mutant colorectal cancer. Oncogene 2019; 38:5746. [PMID: 31147600 PMCID: PMC7608239 DOI: 10.1038/s41388-019-0835-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Steve Wagner
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK
| | | | | | - Melanie Valenti
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK
| | - Gary Box
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK
| | - Liam Jenkins
- Breast Cancer Now Research Centre, The Institute of Cancer Research, London, UK
| | - Caterina Mancusi
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK
| | - Annette Self
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK
| | | | - Ioannis Assiotis
- Tumour Profiling Unit, The Institute of Cancer Research, London, UK
| | - Penny Robinson
- Tumour Profiling Unit, The Institute of Cancer Research, London, UK
| | - Ritika Chauhan
- Tumour Profiling Unit, The Institute of Cancer Research, London, UK
| | - Alistair G Rust
- Tumour Profiling Unit, The Institute of Cancer Research, London, UK
| | - Nik Matthews
- Tumour Profiling Unit, The Institute of Cancer Research, London, UK
| | - Kate Eason
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Khurum Khan
- Department of Medicine, Royal Marsden NHS Foundation Trust, London, UK
| | - Naureen Starling
- Department of Medicine, Royal Marsden NHS Foundation Trust, London, UK
| | - David Cunningham
- Department of Medicine, Royal Marsden NHS Foundation Trust, London, UK
| | - Anguraj Sadanandam
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Clare M Isacke
- Breast Cancer Now Research Centre, The Institute of Cancer Research, London, UK
| | - Vladimir Kirkin
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK
| | - Nicola Valeri
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK.,Department of Medicine, Royal Marsden NHS Foundation Trust, London, UK
| | - Steven R Whittaker
- Division of Cancer Therapeutics, The Institute of Cancer Research, London, UK.
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Linert S, Wagner S, Schmidt P, Higham L, Hepples C, Waddell P, Karaghiosoff K. Novel Cu(I) complexes of functionalized phosphines. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1543298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- S. Linert
- Department of Chemistry, Ludwig-Maximilian University, Munich, Germany
| | - S. Wagner
- Department of Chemistry, Ludwig-Maximilian University, Munich, Germany
| | - P. Schmidt
- Department of Chemistry, Ludwig-Maximilian University, Munich, Germany
| | - L. Higham
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - C. Hepples
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - P. Waddell
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - K. Karaghiosoff
- Department of Chemistry, Ludwig-Maximilian University, Munich, Germany
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Morris K, Wagner S, Reddy Y, Salerno C, Ravichandran A, Garcia-Cortes R, Patel A, Plotner S, Hart J, Neawedde K, Walsh M, Chaudhry S. SIPAT Scores Do Not Correlate with Outcomes in Patients with Ventricular Assist Devices. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1140] [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: 11/29/2022] Open
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Rasmussen JH, Grønhøj C, Håkansson K, Friborg J, Andersen E, Lelkaitis G, Klussmann JP, Wittekindt C, Wagner S, Vogelius IR, von Buchwald C. Risk profiling based on p16 and HPV DNA more accurately predicts location of disease relapse in patients with oropharyngeal squamous cell carcinoma. Ann Oncol 2019; 30:629-636. [PMID: 30657857 DOI: 10.1093/annonc/mdz010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND In the era of precision medicine and HPV-related oropharyngeal squamous cell carcinoma (OPSCC), it is relevant to assess the risk of not only survival, but also the risk of local, regional, or distant treatment failure. The UICC 8th edition uses the surrogate marker p16 to stratify for HPV association but discordance between p16 status and HPV association has been shown. The purpose of this study was to develop a prognostic model to predict the risk of local, regional, and distant metastases and non-cancer-related death for patients with OPSCC, test the prognostic relevance of adding HPV DNA and p16 status, and validate the findings in an independent external dataset. PATIENTS AND METHODS Consecutive patients diagnosed with OPSCC and treated with curative radiotherapy with or without cisplatin in eastern Denmark from 2000 to 2014 were included. Characteristics included age, gender, TNM stage, smoking habits, performance status, and HPV status assessed with p16 and HPV DNA. The information was used to develop a prognostic model for first site of failure with four competing events: recurrence in T-, N-, and M-site, and death with no evidence of disease. RESULTS Overall 1243 patients were eligible for the analysis. A prognostic model with the four events was developed and externally validated in an independent dataset with a heterogeneously treated patient population from another institution. The individual prognostication from the competing risk analysis is displayed in a user friendly online tool (https://rasmussen.shinyapps.io/OPSCCmodelHPV_p16/). Replacing p16 status with the combined variable HPV/p16 status influenced the HR and patients with HPV-/p16+ had significantly higher HR of M-site recurrence than HPV+/p16+ with a HR = 2.56; CI [1.30; 5.02]; P = 0.006 (P = 0.013 in the validation cohort). CONCLUSION Patients with HPV-/p16+ have significantly higher risk of M-site recurrence and could potentially be relevant candidates for clinical trials testing systemic treatments in combination with conventional treatments.
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Affiliation(s)
- J H Rasmussen
- Departments of Otorhinolaryngology, Head and Neck Surgery and Audiology.
| | - C Grønhøj
- Departments of Otorhinolaryngology, Head and Neck Surgery and Audiology
| | - K Håkansson
- Oncology, Section of Radiotherapy, Rigshospitalet, University of Copenhagen, Copenhagen
| | - J Friborg
- Oncology, Section of Radiotherapy, Rigshospitalet, University of Copenhagen, Copenhagen
| | - E Andersen
- Department of Oncology, Herlev Hospital, University of Copenhagen, Copenhagen
| | - G Lelkaitis
- Department of Pathology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - J P Klussmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty, University of Cologne, Cologne
| | - C Wittekindt
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Giessen, Giessen, Germany
| | - S Wagner
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Giessen, Giessen, Germany
| | - I R Vogelius
- Oncology, Section of Radiotherapy, Rigshospitalet, University of Copenhagen, Copenhagen
| | - C von Buchwald
- Departments of Otorhinolaryngology, Head and Neck Surgery and Audiology
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