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Lennon JT, Abramoff RZ, Allison SD, Burckhardt RM, DeAngelis KM, Dunne JP, Frey SD, Friedlingstein P, Hawkes CV, Hungate BA, Khurana S, Kivlin SN, Levine NM, Manzoni S, Martiny AC, Martiny JBH, Nguyen NK, Rawat M, Talmy D, Todd-Brown K, Vogt M, Wieder WR, Zakem EJ. Priorities, opportunities, and challenges for integrating microorganisms into Earth system models for climate change prediction. mBio 2024; 15:e0045524. [PMID: 38526088 PMCID: PMC11078004 DOI: 10.1128/mbio.00455-24] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
Climate change jeopardizes human health, global biodiversity, and sustainability of the biosphere. To make reliable predictions about climate change, scientists use Earth system models (ESMs) that integrate physical, chemical, and biological processes occurring on land, the oceans, and the atmosphere. Although critical for catalyzing coupled biogeochemical processes, microorganisms have traditionally been left out of ESMs. Here, we generate a "top 10" list of priorities, opportunities, and challenges for the explicit integration of microorganisms into ESMs. We discuss the need for coarse-graining microbial information into functionally relevant categories, as well as the capacity for microorganisms to rapidly evolve in response to climate-change drivers. Microbiologists are uniquely positioned to collect novel and valuable information necessary for next-generation ESMs, but this requires data harmonization and transdisciplinary collaboration to effectively guide adaptation strategies and mitigation policy.
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Affiliation(s)
- J. T. Lennon
- Department of Biology, Indiana University, Bloomington, Indiana, USA
| | - R. Z. Abramoff
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
- Ronin Institute, Montclair, New Jersey, USA
| | - S. D. Allison
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California, USA
- Department of Earth System Science, University of California Irvine, Irvine, California, USA
| | | | - K. M. DeAngelis
- Department of Microbiology, University of Massachusetts, Amherst, Massachusetts, USA
| | - J. P. Dunne
- NOAA/OAR Geophysical Fluid Dynamics Laboratory, Princeton, New Jersey, USA
| | - S. D. Frey
- Department of Natural Resources and the Environment, University of New Hampshire, Durham, New Hampshire, USA
| | - P. Friedlingstein
- College of Engineering, Mathematics, and Physical Sciences, University of Exeter, Exeter, United Kingdom
| | - C. V. Hawkes
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, USA
| | - B. A. Hungate
- Department of Biological Sciences, Center for Ecosystem Science, Northern Arizona University, Flagstaff, Arizona, USA
| | - S. Khurana
- Department of Physical Geography, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - S. N. Kivlin
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, USA
| | - N. M. Levine
- Department of Biological Sciences, University of Southern California, Los Angeles, California, USA
| | - S. Manzoni
- Department of Physical Geography, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - A. C. Martiny
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California, USA
| | - J. B. H. Martiny
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California, USA
| | - N. K. Nguyen
- American Society for Microbiology, Washington, DC, USA
| | - M. Rawat
- National Science Foundation, Washington, DC, USA
| | - D. Talmy
- Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA
| | - K. Todd-Brown
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, USA
| | - M. Vogt
- Institute for Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland
| | - W. R. Wieder
- National Center for Atmospheric Research, Boulder, Colorado, USA
- Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA
| | - E. J. Zakem
- Department of Global Ecology, Carnegie Institution for Science, Stanford, California, USA
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Vogt M, Zengerle L, Jonas R, Wilke HJ. The move-C cervical artificial disc can restore intact range of motion and 3-D kinematics. Spine J 2024; 24:340-351. [PMID: 37660895 DOI: 10.1016/j.spinee.2023.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/15/2023] [Accepted: 08/29/2023] [Indexed: 09/05/2023]
Abstract
BACKGROUND CONTEXT In contrast to cervical discectomy and fusion, total disc replacement (TDR) aims at preserving the motion at the treated vertebral level. Spinal motion is commonly evaluated with the range of motion (ROM). However, more qualitative information about cervical kinematics before and after TDR is still lacking. PURPOSE The aim of this in vitro study was to investigate the influence of cervical TDR on ROM, instantaneous centers of rotation (ICR) and three-dimensional helical axes. STUDY DESIGN An in vitro study with human spine specimens under pure moment loading was conducted to evaluate the kinematics of the intact cervical spine and compare it to cervical TDR. METHODS Six fresh frozen human cervical specimens (C4-5, median age 28 years, range 19-47 years, two female and four male) were biomechanically characterized in the intact state and after implantation of a cervical disc prosthesis (MOVE-C, NGMedical, Germany). To mimic in vivo conditions regarding temperature and humidity, water steam was used to create a warm and humid test environment with 37°C. Each specimen was quasistatically loaded with pure moments up to ±2.5 Nm in flexion/extension (FE), lateral bending (LB) and axial rotation (AR) in a universal spine tester for 3.5 cycles at 1 °/s. For each third cycle of motion the ROM was evaluated and an established method was used to determine the helical axis and COR and to project them into three planar X-rays. Statistical analysis was conducted using a Friedman-test and post hoc correction with Dunn-Bonferroni-tests (p<.05). RESULTS After TDR, total ROM was increased in FE from 19.1° to 20.1°, decreased in LB from 14.6° to 12.6° and decreased in AR from 17.7° to 15.5°. No statistical differences between the primary ROM in the intact condition and ROM after TDR were detected. Coupled rotation between LB and AR were also maintained. The position and orientation of the helical axes after cervical TDR was in good agreement with the results of the intact specimens in all three motion directions. The ICR in FE and AR before and after TDR closely matched, while in LB the ICR after TDR were more caudal. The intact in vitro kinematics we found also resembled in vivo results of healthy individuals. CONCLUSION The results of this in vitro study highlight the potential of artificial cervical disc implants to replicate the quantity as well as the quality of motion of the intact cervical spine. CLINICAL SIGNIFICANCE Physiological motion preservation was a driving factor in the development of cervical TDR. Our results demonstrate the potential of cervical TDR to replicate in vivo kinematics in all three motion directions.
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Affiliation(s)
- Morten Vogt
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, University of Ulm, Ulm, Germany
| | - Laura Zengerle
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, University of Ulm, Ulm, Germany
| | - René Jonas
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, University of Ulm, Ulm, Germany
| | - Hans-Joachim Wilke
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, University of Ulm, Ulm, Germany.
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Vogt M, Mehren C, Hackenbroch C, Wilke HJ. Influence of cervical total disc replacement on motion in the target and adjacent segments. Spine J 2024:S1529-9430(24)00036-6. [PMID: 38301903 DOI: 10.1016/j.spinee.2024.01.018] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 01/10/2024] [Accepted: 01/22/2024] [Indexed: 02/03/2024]
Abstract
BACKGROUND CONTEXT The motion limitation after cervical discectomy and fusion alters the spine´s kinematics. Unphysiological strains may be the result and possible explanation for adjacent segment degeneration. Alterations to cervical kinematics due to cervical total disc replacement (TDR), especially two-level, are still under investigated. PURPOSE To investigate cervical motion including coupled motions after one-level and two-level TDR in the treated and also the adjacent segments. STUDY DESIGN An in-vitro study using pure moment loading of human donor spines. METHODS Seven fresh frozen human cervical spine specimens (C4-T1, median age 46 with range 19-60 years, four female) were included in this study. Specimens were tested in the intact condition first, followed by one-level TDR at C5-6 which was subsequently extended one level further caudal (C5-7). Each specimen was quasistatically loaded with pure moments up to 1.5 Nm in flexion/extension (FE), lateral bending (LB), and axial rotation (AR) in a universal spine tester for 3.5 cycles at 1 °/s. During the tests three dimensional motion tracking was performed for each vertebral body individually. From that, the primary and coupled ROM of each spinal level during the third full cycle of motion were evaluated. Nonparametric statistical analysis was performed using a Friedman-test and post-hoc correction with Dunn-Bonferroni-tests (p<.05). Ethics approval was obtained in advance. RESULTS In FE, one-level TDR (C5-6) moderately increased primary FE in all four segments, but only significantly at the cranial adjacent level C4-5. Additional TDR at C6-7 further increased the ROM at the target segment without much influence on the other levels. Increasing implant height at C6-7 partially counteracted the increased FE. Coupled motions were minimal in all test conditions at all levels. In LB, coupled AR was observed in all test conditions at all levels. One-level TDR decreased primary LB at the target segment C5-6 significantly, without much influence on the other levels. Extending TDR to C6-7 decreased ROM in the target segment but without gaining statistical significance. Increasing implant height at C6-7 further decreased primary LB at the target segment, still without significance. Notably, coupled AR was significantly decreased at the cranial adjacent segment C4-5 compared to the intact condition. In AR, coupled LB was observed in all test conditions at the levels C4-5, C5-6, and C6-7, while the transition level to the thoracic spine C7-T1 showed only little coupled LB. Both one-level and two-level TDR showed little influence on primary AR or coupled motions at any level. Only after increasing implant height at C6-7 was the motion of the caudally adjacent level C7-T1 significantly altered. CONCLUSION Evaluating primary FE, LB, and AR together with the associated coupled motions revealed widespread influence of cervical TDR not only on the motion of the treated level but also at the adjacent segments. The influence of two-level TDR is more widespread and involves more levels than one-level TDR. CLINICAL SIGNIFICANCE The prevention of unphysiological strains due to altered kinematics after cervical fusion, which could possibly explain adjacent segment degeneration, were a driving factor in the development of TDR. These experimental findings suggest cervical TDR influences the whole cervical spine, not only the treated segment. The effect becomes more extensive, involving more levels and motion directions, after two-level than after one-level TDR.
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Affiliation(s)
- Morten Vogt
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, University of Ulm, Helmholtzstr. 14, 89081 Ulm, Germany
| | - Christoph Mehren
- Spine Center, Schoen Clinic Munich-Harlaching, Harlachinger Str. 51, 81547 Munich, Germany; Academic Teaching Hospital of the Ludwig-Maximilians-University (LMU), Marchioninistr. 15, 81377 Munich, Germany; Academic Teaching Hospital of the Paracelsus Medical University (PMU), Strubergasse 21, 5020 Salzburg, Austria
| | - Carsten Hackenbroch
- Department of Diagnostic and Interventional Radiology and Neuroradiology, German Armed Forces Hospital of Ulm, Oberer Eselsberg 40, 89081 Ulm, Germany; Department of Diagnostic and Interventional Radiology, University Hospital Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Hans-Joachim Wilke
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, University of Ulm, Helmholtzstr. 14, 89081 Ulm, Germany.
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Maitz A, Haussner F, Braumüller S, Hoffmann A, Lupu L, Wachter U, Radermacher P, Braun CK, Wilke HJ, Vogt M, Ignatius A, Halbgebauer R, Bettac L, Barth TFE, Huber-Lang M, Palmer A. Temporal-spatial organ response after blast-induced experimental blunt abdominal trauma. FASEB J 2021; 35:e22038. [PMID: 34748229 DOI: 10.1096/fj.202100995r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/14/2021] [Accepted: 10/28/2021] [Indexed: 11/11/2022]
Abstract
Abdominal trauma (AT) is of major global importance, particularly with the increased potential for civil, terroristic, and military trauma. The injury pattern and systemic consequences of blunt abdominal injuries are highly variable and frequently underestimated or even missed, and the pathomechanisms remain still poorly understood. Therefore, we investigated the temporal-spatial organ and immune response after a standardized blast-induced blunt AT. Anesthetized mice were exposed to a single blast wave centered on the epigastrium. At 2, 6, or 24 h after trauma, abdominal organ damage was assessed macroscopically, microscopically, and biochemically. A higher degree of trauma severity, determined by a reduction of the distance between the epigastrium and blast inductor, was reflected by a reduced survival rate. The hemodynamic monitoring during the first 120 min after AT revealed a decline in the mean arterial pressure within the first 80 min, whereas the heart rate remained quite stable. AT induced a systemic damage and inflammatory response, evidenced by elevated HMGB-1 and IL-6 plasma levels. The macroscopic injury pattern of the abdominal organs (while complex) was consistent, with the following frequency: liver > pancreas > spleen > left kidney > intestine > right kidney > others > lungs and was reflected by microscopic liver and pancreas damages. Plasma levels of organ dysfunction markers increased during the first 6 h after AT and subsequently declined, indicating an early, temporal impairment of the function on a multi-organ level. The established highly reproducible murine blunt AT, with time- and trauma-severity-dependent organ injury patterns, systemic inflammatory response, and impairment of various organ functions, reflects characteristics of human AT. In the future, this model may help to study the complex immuno-pathophysiological consequences and innovative therapeutic approaches after blunt AT.
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Affiliation(s)
- Alexander Maitz
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
| | - Felix Haussner
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
| | - Sonja Braumüller
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
| | - Andrea Hoffmann
- Institute of Anesthesiological Pathophysiology and Process Engineering, Ulm University Medical Center, Ulm, Germany
| | - Ludmila Lupu
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
| | - Ulrich Wachter
- Institute of Anesthesiological Pathophysiology and Process Engineering, Ulm University Medical Center, Ulm, Germany
| | - Peter Radermacher
- Institute of Anesthesiological Pathophysiology and Process Engineering, Ulm University Medical Center, Ulm, Germany
| | - Christian K Braun
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany.,Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm, Germany
| | - Hans-Joachim Wilke
- Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Morten Vogt
- Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Rebecca Halbgebauer
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
| | - Lucas Bettac
- Department of Internal Medicine I, Ulm University Medical Center, Ulm, Germany
| | - Thomas F E Barth
- Institute of Pathology, Ulm University Medical Center, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
| | - Annette Palmer
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Ulm, Germany
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Marchetti B, Grudiev A, Craievich P, Assmann R, Braun HH, Catalan Lasheras N, Christie F, D’Arcy R, Fortunati R, Ganter R, González Caminal P, Hoffmann M, Huening M, Jaster-Merz SM, Jonas R, Marcellini F, Marx D, McMonagle G, Osterhoff J, Pedrozzi M, Prat Costa E, Reiche S, Reukauff M, Schreiber S, Tews G, Vogt M, Wesch S, Wuensch W. Experimental demonstration of novel beam characterization using a polarizable X-band transverse deflection structure. Sci Rep 2021; 11:3560. [PMID: 33574395 PMCID: PMC7878911 DOI: 10.1038/s41598-021-82687-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 01/21/2021] [Indexed: 01/30/2023] Open
Abstract
The PolariX TDS (Polarizable X-Band Transverse Deflection Structure) is an innovative TDS-design operating in the X-band frequency-range. The design gives full control of the streaking plane, which can be tuned in order to characterize the projections of the beam distribution onto arbitrary transverse axes. This novel feature opens up new opportunities for detailed characterization of the electron beam. In this paper we present first measurements of the Polarix TDS at the FLASHForward beamline at DESY, including three-dimensional reconstruction of the charge-density distribution of the bunch and slice emittance measurements in both transverse directions. The experimental results open the path toward novel and more extensive beam characterization in the direction of multi-dimensional-beam-phase-space reconstruction.
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Affiliation(s)
- B. Marchetti
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany ,grid.434729.f0000 0004 0590 2900Present Address: European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - A. Grudiev
- grid.9132.90000 0001 2156 142XCERN, 1211 Geneva 23, Switzerland
| | - P. Craievich
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - R. Assmann
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - H.-H. Braun
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | | | - F. Christie
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - R. D’Arcy
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - R. Fortunati
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - R. Ganter
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - P. González Caminal
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - M. Hoffmann
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - M. Huening
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - S. M. Jaster-Merz
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - R. Jonas
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - F. Marcellini
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - D. Marx
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany ,grid.202665.50000 0001 2188 4229Present Address: Brookhaven National Laboratory, Upton, NY 11973-5000 USA
| | - G. McMonagle
- grid.9132.90000 0001 2156 142XCERN, 1211 Geneva 23, Switzerland
| | - J. Osterhoff
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - M. Pedrozzi
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - E. Prat Costa
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - S. Reiche
- grid.5991.40000 0001 1090 7501PSI, 5232 Villigen, Switzerland
| | - M. Reukauff
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - S. Schreiber
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - G. Tews
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - M. Vogt
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - S. Wesch
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - W. Wuensch
- grid.9132.90000 0001 2156 142XCERN, 1211 Geneva 23, Switzerland
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Liebsch C, Aleinikov V, Kerimbayev T, Akshulakov S, Kocak T, Vogt M, Jansen JU, Wilke HJ. In vitro comparison of personalized 3D printed versus standard expandable titanium vertebral body replacement implants in the mid-thoracic spine using entire rib cage specimens. Clin Biomech (Bristol, Avon) 2020; 78:105070. [PMID: 32531440 DOI: 10.1016/j.clinbiomech.2020.105070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/27/2020] [Accepted: 06/01/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Expandable titanium implants have proven their suitability as vertebral body replacement device in several clinical and biomechanical studies. Potential stabilizing features of personalized 3D printed titanium devices, however, have never been explored. This in vitro study aimed to prove their equivalence regarding primary stability and three-dimensional motion behavior in the mid-thoracic spine including the entire rib cage. METHODS Six fresh frozen human thoracic spine specimens with intact rib cages were loaded with pure moments of 5 Nm while performing optical motion tracking of all vertebrae. Following testing in intact condition (1), the specimens were tested after inserting personalized 3D printed titanium vertebral body replacement implants (2) and the two standard expandable titanium implants Obelisc™ (3) and Synex™ (4), each at T6 level combined with posterior pedicle screw-rod fixation from T4 to T8. FINDINGS No significant differences (P < .05) in primary and secondary T1-T12 ranges of motion were found between the three implant types. Compared to the intact condition, slight decreases of the range of motion were found, which were significant for Synex™ in primary flexion/extension (-17%), specifically at T3-T4 level (-46%), primary lateral bending (-18%), and secondary lateral bending during primary axial rotation (-53%). Range of motion solely increased at T8-T9 level, while being significant only for Obelisc™ (+35%). INTERPRETATION Personalized 3D printed vertebral body replacement implants provide a promising alternative to standard expandable devices regarding primary stability and three-dimensional motion behavior in the mid-thoracic spine due to the stabilizing effect of the rib cage.
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Affiliation(s)
- Christian Liebsch
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University, Ulm, Germany
| | | | | | | | - Tugrul Kocak
- Department of Orthopedics, Ulm University, Ulm, Germany
| | - Morten Vogt
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University, Ulm, Germany
| | - Jan Ulrich Jansen
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University, Ulm, Germany
| | - Hans-Joachim Wilke
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University, Ulm, Germany.
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7
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Liebsch C, Kocak T, Aleinikov V, Kerimbayev T, Akshulakov S, Jansen JU, Vogt M, Wilke HJ. Thoracic Spinal Stability and Motion Behavior Are Affected by the Length of Posterior Instrumentation After Vertebral Body Replacement, but Not by the Surgical Approach Type: An in vitro Study With Entire Rib Cage Specimens. Front Bioeng Biotechnol 2020; 8:572. [PMID: 32582680 PMCID: PMC7295896 DOI: 10.3389/fbioe.2020.00572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 02/26/2020] [Accepted: 05/12/2020] [Indexed: 11/13/2022] Open
Abstract
Spinal tumors and unstable vertebral body fractures usually require surgical treatment including vertebral body replacement. Regarding primary stability, however, the best possible treatment depends on the spinal region. The purpose of this in vitro study was to evaluate the effects of instrumentation length and approach size on thoracic spinal stability including the entire rib cage. Six fresh frozen human thoracic spine specimens with intact rib cages (C7-L1) were loaded with pure moments of 5 Nm in flexion/extension, lateral bending, and axial rotation, while monitoring the relative motions of all spinal segments using optical motion tracking. The specimens were tested (1) in the intact condition, followed by testing after vertebral body replacement at T6 level using a unilateral approach combined with (2) long instrumentation (T4-T8) and (3) short instrumentation (T5-T7) as well as a bilateral approach combined with (4) long and (5) short instrumentation. Significant increases of the range of motion (p < 0.05) were found in the entire thoracic spine (T1-T12) using the bilateral approach and short instrumentation in primary flexion/extension and in secondary axial rotation during primary lateral bending compared to both conditions with long instrumentation, as well as in secondary lateral bending during primary axial rotation compared to unilateral approach and long instrumentation. Compared to the intact condition, the range of motion was significantly decreased using unilateral approach and long instrumentation in flexion extension and secondary lateral bending during primary axial rotation, as well as using bilateral approach and long instrumentation in lateral bending. On the segmental level, the range of motion was significantly increased at T4-T5 level in lateral bending using unilateral approach and short instrumentation and significantly decreased using bilateral approach and long instrumentation compared to their respective previous conditions. Regardless of the approach type, which did not affect thoracic spinal stability in the present study, short instrumentation overall shows sufficient primary stability in the mid-thoracic spine with intact rib cage, while creating considerably more instability compared to long instrumentation, potentially being of importance regarding long-term implant failure. Moreover, short instrumentation could affect adjacent segment disease due to increased motion at the upper segmental level.
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Affiliation(s)
- Christian Liebsch
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University Medical Center, Ulm, Germany
| | - Tugrul Kocak
- Department of Orthopedics, Ulm University, Ulm, Germany
| | | | | | | | - Jan Ulrich Jansen
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University Medical Center, Ulm, Germany
| | - Morten Vogt
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University Medical Center, Ulm, Germany
| | - Hans-Joachim Wilke
- Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University Medical Center, Ulm, Germany
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Akazawa Y, Fujioka T, Kuhn A, Hui W, Slorach C, Roehlig C, Mertens L, Vogt M, Friedberg M. 1159 Right ventricular electromechanical dyssynchrony in relation to right ventricular remodeling, dysfunction and exercise capacity in Ebstein anomaly. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.663] [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
Abnormal atrioventricular conduction and functional right ventricular (fRV) dysfunction are common in patients with Ebstein anomaly (EA). However, the relation of fRV dyssynchrony to fRV function in EA has not been studied.
Purpose
We hypothesized that fRV electromechanical dyssynchrony is associated with fRV remodeling, dysfunction and exercise intolerance in EA patients.
Methods
Non-operated EA patients and age-matched controls prospectively underwent echocardiography, cardiovascular magnetic resonance imaging (CMR) and cardiopulmonary exercise testing to quantify RV remodeling, dysfunction and exercise capacity, respectively. The relation of these to fRV dyssynchrony was investigated. RV mechanical dyssynchrony was defined by early septal activation (right-sided septal flash), RV lateral wall prestretch/late contraction, postsystolic shortening, and the maximal intra-RV delay (difference in time to peak of lateral basal RV and apical septal segments) using 2-dimensional strain echocardiography.
Results
Thirty-five EA patients (age 31.6 ± 17.3 years, 19 female) and 35 age-matched controls were studied. QRS duration and intra-fRV mechanical delay were significantly longer in EA compared with controls. 19/35(54%) of EA patients had early activation of septal segments with simultaneous stretching and consequent late activation and post-systolic shortening of RV lateral segments. QRS duration correlated with fRV end-diastolic (fRVEDVI, r = 0.46, P <0.01) and end-systolic indexed volumes (fRVESVIr = 0.57, P <0.001). Intra-fRV delay correlated with RV global longitudinal strain (GLS, r=-0.45,P <0.05) and RV fractional area change (r=-0.56, P <0.01). Intra-fRV delay was also associated with fRVEDVI (r = 0.43, P <0.05), fRVESVI (r = 0.63, P <0.001), fRVEF (r=-0.46,P <0.05) and predicted peak VO2 (r=-0.39, P < 0.05). EA patients with versus without a septal flash had lower fRVEF (45 ± 11 vs. 54 ± 8%, p < 0.05) and predicted peak VO2 (0.71 ± 0.19 vs. 0.92 ± 0.33, p < 0.05).
Conclusions
In EA, fRV electromechanical dyssynchrony is associated with fRV remodeling, dysfunction and impaired exercise capacity and may constitute a therapeutic target.
Abstract 1159 Figure.
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Affiliation(s)
- Y Akazawa
- Hospital for Sick Children, Toronto, Canada
| | - T Fujioka
- Hospital for Sick Children, Toronto, Canada
| | - A Kuhn
- Deutsches Herzzentrum München, Technische Universituät München, Munich, Germany
| | - W Hui
- Hospital for Sick Children, Toronto, Canada
| | - C Slorach
- Hospital for Sick Children, Toronto, Canada
| | - C Roehlig
- Deutsches Herzzentrum München, Technische Universituät München, Munich, Germany
| | - L Mertens
- Hospital for Sick Children, Toronto, Canada
| | - M Vogt
- Deutsches Herzzentrum München, Technische Universituät München, Munich, Germany
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9
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Hunziker L, Radovanovic D, Jeger R, Pedrazzini G, Cuculi F, Urban P, Erne P, Rickli H, Pilgrim T, Hess F, Simon R, Hangartner P, Hufschmid U, Hornig B, Altwegg L, Trummler S, Windecker S, Rueff T, Loretan P, Roethlisberger C, Evéquoz D, Mang G, Ryser D, Müller P, Jecker R, Kistler W, Hongler T, Stäuble S, Freiwald G, Schmid H, Stauffer J, Cook S, Bietenhard K, Roffi M, Wojtyna W, Schönenberger R, Simonin C, Waldburger R, Schmidli M, Federspiel B, Weiss E, Marty H, Weber K, Zender H, Poepping I, Hugi A, Koltai E, Iglesias J, Erne P, Heimes T, Jordan B, Pagnamenta A, Feraud P, Beretta E, Stettler C, Repond F, Widmer F, Heimgartner C, Polikar R, Bassetti S, Iselin H, Giger M, Egger P, Kaeslin T, Fischer A, Herren T, Eichhorn P, Neumeier C, Flury G, Girod G, Vogel R, Niggli B, Yoon S, Nossen J, Stoller U, Veragut U, Bächli E, Weber A, Schmidt D, Hellermann J, Eriksson U, Fischer T, Peter M, Gasser S, Fatio R, Vogt M, Ramsay D, Wyss C, Bertel O, Maggiorini M, Eberli F, Christen S. Twenty-Year Trends in the Incidence and Outcome of Cardiogenic Shock in AMIS Plus Registry. Circ Cardiovasc Interv 2019; 12:e007293. [DOI: 10.1161/circinterventions.118.007293] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Lukas Hunziker
- Department of Cardiology, Bern University Hospital, Switzerland (L.H., T.P.)
| | - Dragana Radovanovic
- AMIS Plus Data Center, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Switzerland (D.R.)
| | - Raban Jeger
- Division of Cardiology, University Hospital Basel, Switzerland (R.J.)
| | | | - Florim Cuculi
- Heart Centre Lucerne, Luzerner Kantonsspital, Switzerland (F.C.)
| | - Philip Urban
- Cardiology Department, La Tour Hospital, Geneva, Switzerland (P.U.)
| | - Paul Erne
- Department of Biomedicine, University of Basel, Switzerland (P.E.)
| | - Hans Rickli
- Department of Cardiology, Kantonsspital St. Gallen, Switzerland (H.R.)
| | - Thomas Pilgrim
- Department of Cardiology, Bern University Hospital, Switzerland (L.H., T.P.)
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10
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Vogt M, Hülser T. Nanoskalige Sauerstoff-Carrier für die Verbrennung gasförmiger Brennstoffe. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855154] [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)
- M. Vogt
- IUTA e.V; Bliersheimer Straße 58 60 47229 Duisburg Deutschland
| | - T. Hülser
- IUTA e.V; Bliersheimer Straße 58 60 47229 Duisburg Deutschland
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11
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Vogt M, Meschede S, Seitz N, Kuhn S, Lutz M. Betrieb chemischer Speichertechnologien in einem Unternehmensverbund. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855075] [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: 11/09/2022]
Affiliation(s)
- M. Vogt
- IUTA e.V; Luftreinhaltung und Aerosole; Bliersheimer Straße 58 60 47229 Duisburg Deutschland
| | - S. Meschede
- IUTA e.V; Luftreinhaltung und Aerosole; Bliersheimer Straße 58 60 47229 Duisburg Deutschland
| | - N. Seitz
- Technische Universität München; Forschungsinstitut Unternehmensführung, Logistik und Produktion; Leopoldstraße 145 80804 München Deutschland
| | - S. Kuhn
- Technische Universität München; Forschungsinstitut Unternehmensführung, Logistik und Produktion; Leopoldstraße 145 80804 München Deutschland
| | - M. Lutz
- Technische Universität München; Forschungsinstitut Unternehmensführung, Logistik und Produktion; Leopoldstraße 145 80804 München Deutschland
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12
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Rodríguez-Lugo RE, Chacón-Terán MA, De León S, Vogt M, Rosenthal AJ, Landaeta VR. Synthesis, characterization and Pd(ii)-coordination chemistry of the ligand tris(quinolin-8-yl)phosphite. Application in the catalytic aerobic oxidation of amines. Dalton Trans 2018; 47:2061-2072. [DOI: 10.1039/c7dt04000h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The ligand P(Oquin)3 is reported and was coordinated to Pd(ii). This complex is a catalyst precursor for the homocoupling of amines.
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Affiliation(s)
- R. E. Rodríguez-Lugo
- Universidad Simón Bolívar
- Departamento de Química
- Venezuela
- Laboratorio de Química Bioinorgánica
- Centro de Química
| | | | - S. De León
- Universidad Simón Bolívar
- Departamento de Química
- Venezuela
| | - M. Vogt
- Institut für Anorganische Chemie und Kristallographie
- Universität Bremen
- 28359 Bremen
- Germany
| | - A. J. Rosenthal
- Department of Chemistry and Applied Biosciences
- Eidgenössische Technische Hochschule Zürich
- 8093 Zürich
- Switzerland
| | - V. R. Landaeta
- Universidad Simón Bolívar
- Departamento de Química
- Venezuela
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13
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Hahn M, Bürckert JP, Luttenberger CA, Klebow S, Hess M, Al-Maarri M, Vogt M, Reißig S, Hallek M, Wienecke-Baldacchino A, Buch T, Muller CP, Pallasch CP, Wunderlich FT, Waisman A, Hövelmeyer N. Aberrant splicing of the tumor suppressor CYLD promotes the development of chronic lymphocytic leukemia via sustained NF-κB signaling. Leukemia 2017; 32:72-82. [DOI: 10.1038/leu.2017.168] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 04/24/2017] [Accepted: 05/22/2017] [Indexed: 11/10/2022]
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Cervenak J, Pabst J, Vogt M, Malcic I, Cleuziou J, Schreiber C, Lange R. Predictive and Competing Risk Modeling: Risk Factors for Interstage Mortality between Norwood I Procedure and Total Cavopulmonary Anastomosis in Children with Hypoplastic Left Heart Syndrome. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598662] [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: 10/20/2022]
Affiliation(s)
- J. Cervenak
- Department of Cardiovascular Surgery, German Heart Centre Munich, Munich, Germany
| | - J. Pabst
- Department of Cardiovascular Surgery, German Heart Centre Munich, Munich, Germany
| | - M. Vogt
- Department of Pediatric Cardiology and Congenital Heart Defects, German Heart Centre Munich, Munich, Germany
| | - I. Malcic
- Department of Pediatrics, University Hospital Centre Zagreb, Zagreb, Croatia
| | - J. Cleuziou
- Department of Cardiovascular Surgery, German Heart Centre Munich, Munich, Germany
| | - C. Schreiber
- Department of Cardiovascular Surgery, German Heart Centre Munich, Munich, Germany
| | - R. Lange
- Department of Cardiovascular Surgery, German Heart Centre Munich, Munich, Germany
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15
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Kerkhoff AD, Meintjes G, Opie J, Vogt M, Jhilmeet N, Wood R, Lawn SD. Anaemia in patients with HIV-associated TB: relative contributions of anaemia of chronic disease and iron deficiency. Int J Tuberc Lung Dis 2017; 20:193-201. [PMID: 26792471 PMCID: PMC6371921 DOI: 10.5588/ijtld.15.0558] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND: Anaemia commonly complicates both human immunodeficiency virus (HIV) infection and tuberculosis (TB), contributing substantially to morbidity and mortality. The mechanisms underlying anaemia and corresponding treatments in co-infected patients are poorly defined. OBJECTIVE: To determine the relative contributions of anaemia of chronic disease (ACD) and iron deficiency to anaemia in patients with HIV-associated TB. DESIGN: Consecutively recruited hospitalised (n = 102) and matched ambulatory patients (n = 51) with microbiologically confirmed HIV-associated TB in Cape Town, South Africa, were included. Haemoglobin levels, iron status markers, hepcidin and pro-inflammatory cytokines in blood were measured. We determined the prevalence of ACD and iron-deficiency anaemia (IDA) using seven different published definitions of IDA. RESULTS: More than 80% of enrolled HIV-associated TB patients were anaemic, and anaemia was more severe among in-patients. Over 95% of anaemic HIV-associated TB patients had ACD, whereas the proportion with IDA using a range of seven different definitions was low overall (median < 3%, range 0–32.6) in both patient groups. The proportion with IDA and hepcidin concentration ⩽ 20.0 ng/ml (predictive of responsiveness to oral iron supplementation) was also very low (median < 3%, range 0–15.1). CONCLUSIONS: ACD was the predominant cause underlying anaemia in HIV-associated TB patients, and IDA was very uncommon in this setting. The majority of anaemic HIV-associated TB patients were unlikely to benefit from oral iron supplementation.
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Affiliation(s)
- A D Kerkhoff
- Department of Medicine, University of California San Francisco School of Medicine, San Francisco, California, USA; Department of Global Health, Academic Medical Center, Amsterdam Institute for Global Health and Development, University of Amsterdam, Amsterdam, The Netherlands; The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - G Meintjes
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa; Department of Medicine, Imperial College, London, UK
| | - J Opie
- Division of Haematology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; C17 Clinical Pathology Laboratory, National Health Laboratory Service and Groote Schuur Hospital, Cape Town, South Africa
| | - M Vogt
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - N Jhilmeet
- Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - R Wood
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - S D Lawn
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
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16
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Marienhagen J, Kallscheuer N, Vogt M. Construction of a Corynebacterium glutamicumPlatform Strain for the Production of High-Value Plant Secondary Metabolites. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650133] [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]
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17
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Burckhardt F, Heinen W, Vogt M. Flüchtlingsgesundheit: Serologische Ergebnisse unterstreichen dringenden Schutz vor Masern durch Impfungen bei Rheinland-Pfälzischen Flüchtlingen, März bis Oktober 2015. Gesundheitswesen 2016. [DOI: 10.1055/s-0036-1578825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Jakosky BM, Grebowsky JM, Luhmann JG, Connerney J, Eparvier F, Ergun R, Halekas J, Larson D, Mahaffy P, McFadden J, Mitchell DF, Schneider N, Zurek R, Bougher S, Brain D, Ma YJ, Mazelle C, Andersson L, Andrews D, Baird D, Baker D, Bell JM, Benna M, Chaffin M, Chamberlin P, Chaufray YY, Clarke J, Collinson G, Combi M, Crary F, Cravens T, Crismani M, Curry S, Curtis D, Deighan J, Delory G, Dewey R, DiBraccio G, Dong C, Dong Y, Dunn P, Elrod M, England S, Eriksson A, Espley J, Evans S, Fang X, Fillingim M, Fortier K, Fowler CM, Fox J, Gröller H, Guzewich S, Hara T, Harada Y, Holsclaw G, Jain SK, Jolitz R, Leblanc F, Lee CO, Lee Y, Lefevre F, Lillis R, Livi R, Lo D, Mayyasi M, McClintock W, McEnulty T, Modolo R, Montmessin F, Morooka M, Nagy A, Olsen K, Peterson W, Rahmati A, Ruhunusiri S, Russell CT, Sakai S, Sauvaud JA, Seki K, Steckiewicz M, Stevens M, Stewart AIF, Stiepen A, Stone S, Tenishev V, Thiemann E, Tolson R, Toublanc D, Vogt M, Weber T, Withers P, Woods T, Yelle R. MAVEN observations of the response of Mars to an interplanetary coronal mass ejection. Science 2015; 350:aad0210. [PMID: 26542576 DOI: 10.1126/science.aad0210] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Coupling between the lower and upper atmosphere, combined with loss of gas from the upper atmosphere to space, likely contributed to the thin, cold, dry atmosphere of modern Mars. To help understand ongoing ion loss to space, the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft made comprehensive measurements of the Mars upper atmosphere, ionosphere, and interactions with the Sun and solar wind during an interplanetary coronal mass ejection impact in March 2015. Responses include changes in the bow shock and magnetosheath, formation of widespread diffuse aurora, and enhancement of pick-up ions. Observations and models both show an enhancement in escape rate of ions to space during the event. Ion loss during solar events early in Mars history may have been a major contributor to the long-term evolution of the Mars atmosphere.
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Affiliation(s)
| | - J M Grebowsky
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - J G Luhmann
- University of California at Berkeley, Berkeley, CA, USA
| | - J Connerney
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - F Eparvier
- University of Colorado, Boulder, CO, USA
| | - R Ergun
- University of Colorado, Boulder, CO, USA
| | - J Halekas
- University of Iowa, Iowa City, IA, USA
| | - D Larson
- University of California at Berkeley, Berkeley, CA, USA
| | - P Mahaffy
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - J McFadden
- University of California at Berkeley, Berkeley, CA, USA
| | - D F Mitchell
- University of California at Berkeley, Berkeley, CA, USA
| | | | - R Zurek
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - S Bougher
- University of Michigan, Ann Arbor, MI, USA
| | - D Brain
- University of Colorado, Boulder, CO, USA
| | - Y J Ma
- University of California at Los Angeles, Los Angeles, CA, USA
| | - C Mazelle
- CNRS-Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France. University Paul Sabatier, Toulouse, France
| | | | - D Andrews
- Swedish Institute of Space Physics, Uppsala, Sweden
| | - D Baird
- NASA/Johnson Space Center, Houston, TX, USA
| | - D Baker
- University of Colorado, Boulder, CO, USA
| | - J M Bell
- National Institute of Aerospace, Hampton, VA, USA
| | - M Benna
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - M Chaffin
- University of Colorado, Boulder, CO, USA
| | - P Chamberlin
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - Y-Y Chaufray
- Laboratoire atmosphères, milieux et observations spatiales (LATMOS)-CNRS, Paris, France
| | - J Clarke
- Boston University, Boston, MA, USA
| | - G Collinson
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - M Combi
- University of Michigan, Ann Arbor, MI, USA
| | - F Crary
- University of Colorado, Boulder, CO, USA
| | - T Cravens
- University of Kansas, Lawrence, KS, USA
| | - M Crismani
- University of Colorado, Boulder, CO, USA
| | - S Curry
- University of California at Berkeley, Berkeley, CA, USA
| | - D Curtis
- University of California at Berkeley, Berkeley, CA, USA
| | - J Deighan
- University of Colorado, Boulder, CO, USA
| | - G Delory
- University of California at Berkeley, Berkeley, CA, USA
| | - R Dewey
- University of Colorado, Boulder, CO, USA
| | - G DiBraccio
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - C Dong
- University of Michigan, Ann Arbor, MI, USA
| | - Y Dong
- University of Colorado, Boulder, CO, USA
| | - P Dunn
- University of California at Berkeley, Berkeley, CA, USA
| | - M Elrod
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - S England
- University of California at Berkeley, Berkeley, CA, USA
| | - A Eriksson
- Swedish Institute of Space Physics, Uppsala, Sweden
| | - J Espley
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - S Evans
- Computational Physics, Inc., Boulder, CO, USA
| | - X Fang
- University of Colorado, Boulder, CO, USA
| | - M Fillingim
- University of California at Berkeley, Berkeley, CA, USA
| | - K Fortier
- University of Colorado, Boulder, CO, USA
| | - C M Fowler
- University of Colorado, Boulder, CO, USA
| | - J Fox
- Wright State University, Dayton, OH, USA
| | - H Gröller
- University of Arizona, Tucson, AZ, USA
| | - S Guzewich
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - T Hara
- University of California at Berkeley, Berkeley, CA, USA
| | - Y Harada
- University of California at Berkeley, Berkeley, CA, USA
| | - G Holsclaw
- University of Colorado, Boulder, CO, USA
| | - S K Jain
- University of Colorado, Boulder, CO, USA
| | - R Jolitz
- University of California at Berkeley, Berkeley, CA, USA
| | - F Leblanc
- Laboratoire atmosphères, milieux et observations spatiales (LATMOS)-CNRS, Paris, France
| | - C O Lee
- University of California at Berkeley, Berkeley, CA, USA
| | - Y Lee
- University of Michigan, Ann Arbor, MI, USA
| | - F Lefevre
- Laboratoire atmosphères, milieux et observations spatiales (LATMOS)-CNRS, Paris, France
| | - R Lillis
- University of California at Berkeley, Berkeley, CA, USA
| | - R Livi
- University of California at Berkeley, Berkeley, CA, USA
| | - D Lo
- University of Arizona, Tucson, AZ, USA
| | | | | | - T McEnulty
- University of Colorado, Boulder, CO, USA
| | - R Modolo
- Laboratoire atmosphères, milieux et observations spatiales (LATMOS)-CNRS, Paris, France
| | - F Montmessin
- Laboratoire atmosphères, milieux et observations spatiales (LATMOS)-CNRS, Paris, France
| | - M Morooka
- University of Colorado, Boulder, CO, USA
| | - A Nagy
- University of Michigan, Ann Arbor, MI, USA
| | - K Olsen
- University of Michigan, Ann Arbor, MI, USA
| | - W Peterson
- University of Colorado, Boulder, CO, USA
| | - A Rahmati
- University of Kansas, Lawrence, KS, USA
| | | | - C T Russell
- University of California at Los Angeles, Los Angeles, CA, USA
| | - S Sakai
- University of Kansas, Lawrence, KS, USA
| | - J-A Sauvaud
- CNRS-Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France. University Paul Sabatier, Toulouse, France
| | - K Seki
- Nagoya University, Nagoya, Japan
| | - M Steckiewicz
- CNRS-Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France. University Paul Sabatier, Toulouse, France
| | - M Stevens
- Naval Research Laboratory, Washington, DC, USA
| | | | - A Stiepen
- University of Colorado, Boulder, CO, USA
| | - S Stone
- University of Arizona, Tucson, AZ, USA
| | - V Tenishev
- University of Michigan, Ann Arbor, MI, USA
| | - E Thiemann
- University of Colorado, Boulder, CO, USA
| | - R Tolson
- North Carolina State University, Raleigh, NC, USA
| | - D Toublanc
- CNRS-Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France. University Paul Sabatier, Toulouse, France
| | - M Vogt
- Boston University, Boston, MA, USA
| | - T Weber
- University of Colorado, Boulder, CO, USA
| | | | - T Woods
- University of Colorado, Boulder, CO, USA
| | - R Yelle
- University of Arizona, Tucson, AZ, USA
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Bougher S, Jakosky B, Halekas J, Grebowsky J, Luhmann J, Mahaffy P, Connerney J, Eparvier F, Ergun R, Larson D, McFadden J, Mitchell D, Schneider N, Zurek R, Mazelle C, Andersson L, Andrews D, Baird D, Baker DN, Bell JM, Benna M, Brain D, Chaffin M, Chamberlin P, Chaufray JY, Clarke J, Collinson G, Combi M, Crary F, Cravens T, Crismani M, Curry S, Curtis D, Deighan J, Delory G, Dewey R, DiBraccio G, Dong C, Dong Y, Dunn P, Elrod M, England S, Eriksson A, Espley J, Evans S, Fang X, Fillingim M, Fortier K, Fowler CM, Fox J, Gröller H, Guzewich S, Hara T, Harada Y, Holsclaw G, Jain SK, Jolitz R, Leblanc F, Lee CO, Lee Y, Lefevre F, Lillis R, Livi R, Lo D, Ma Y, Mayyasi M, McClintock W, McEnulty T, Modolo R, Montmessin F, Morooka M, Nagy A, Olsen K, Peterson W, Rahmati A, Ruhunusiri S, Russell CT, Sakai S, Sauvaud JA, Seki K, Steckiewicz M, Stevens M, Stewart AIF, Stiepen A, Stone S, Tenishev V, Thiemann E, Tolson R, Toublanc D, Vogt M, Weber T, Withers P, Woods T, Yelle R. Early MAVEN Deep Dip campaign reveals thermosphere and ionosphere variability. Science 2015; 350:aad0459. [PMID: 26542579 DOI: 10.1126/science.aad0459] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The Mars Atmosphere and Volatile Evolution (MAVEN) mission, during the second of its Deep Dip campaigns, made comprehensive measurements of martian thermosphere and ionosphere composition, structure, and variability at altitudes down to ~130 kilometers in the subsolar region. This altitude range contains the diffusively separated upper atmosphere just above the well-mixed atmosphere, the layer of peak extreme ultraviolet heating and primary reservoir for atmospheric escape. In situ measurements of the upper atmosphere reveal previously unmeasured populations of neutral and charged particles, the homopause altitude at approximately 130 kilometers, and an unexpected level of variability both on an orbit-to-orbit basis and within individual orbits. These observations help constrain volatile escape processes controlled by thermosphere and ionosphere structure and variability.
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Affiliation(s)
- S Bougher
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA.
| | - B Jakosky
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - J Halekas
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
| | - J Grebowsky
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - J Luhmann
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - P Mahaffy
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - J Connerney
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - F Eparvier
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - R Ergun
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - D Larson
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - J McFadden
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - D Mitchell
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - N Schneider
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - R Zurek
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - C Mazelle
- CNRS/Institut de Recherche en Astrophysique et Planétologie, Toulouse, France. University Paul Sabatier, Toulouse, France
| | - L Andersson
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - D Andrews
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - D Baird
- NASA/Johnson Space Center, Houston, TX, USA
| | - D N Baker
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - J M Bell
- National Institute of Aerospace, Hampton, VA, USA
| | - M Benna
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - D Brain
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - M Chaffin
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - P Chamberlin
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - J-Y Chaufray
- Laboratoire Atmosphères, Milieux, Observations Spatiales /CNRS, Verrieres-le-Buisson, France
| | - J Clarke
- Department of Astronomy, Boston University, Boston, MA, USA
| | - G Collinson
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - M Combi
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA
| | - F Crary
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - T Cravens
- Department of Physics and Astronomy, University of Kansas, Lawrence, KS, USA
| | - M Crismani
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - S Curry
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - D Curtis
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - J Deighan
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - G Delory
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - R Dewey
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - G DiBraccio
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - C Dong
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA
| | - Y Dong
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - P Dunn
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - M Elrod
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - S England
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - A Eriksson
- Swedish Institute of Space Physics, Kiruna, Sweden
| | - J Espley
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - S Evans
- Computational Physics, Springfield, VA, USA
| | - X Fang
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - M Fillingim
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - K Fortier
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - C M Fowler
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - J Fox
- Department of Physics, Wright State University, Fairborn, OH, USA
| | - H Gröller
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - S Guzewich
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - T Hara
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - Y Harada
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - G Holsclaw
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - S K Jain
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - R Jolitz
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - F Leblanc
- Laboratoire Atmosphères, Milieux, Observations Spatiales /CNRS, Verrieres-le-Buisson, France
| | - C O Lee
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - Y Lee
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA
| | - F Lefevre
- Laboratoire Atmosphères, Milieux, Observations Spatiales /CNRS, Verrieres-le-Buisson, France
| | - R Lillis
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - R Livi
- Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, USA
| | - D Lo
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - Y Ma
- Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA, USA
| | - M Mayyasi
- Department of Astronomy, Boston University, Boston, MA, USA
| | - W McClintock
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - T McEnulty
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - R Modolo
- Laboratoire Atmosphères, Milieux, Observations Spatiales /CNRS, Verrieres-le-Buisson, France
| | - F Montmessin
- Laboratoire Atmosphères, Milieux, Observations Spatiales /CNRS, Verrieres-le-Buisson, France
| | - M Morooka
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - A Nagy
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA
| | - K Olsen
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA
| | - W Peterson
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - A Rahmati
- Department of Physics and Astronomy, University of Kansas, Lawrence, KS, USA
| | - S Ruhunusiri
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
| | - C T Russell
- Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA, USA
| | - S Sakai
- Department of Physics and Astronomy, University of Kansas, Lawrence, KS, USA
| | - J-A Sauvaud
- CNRS/Institut de Recherche en Astrophysique et Planétologie, Toulouse, France. University Paul Sabatier, Toulouse, France
| | - K Seki
- Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi, Japan
| | - M Steckiewicz
- CNRS/Institut de Recherche en Astrophysique et Planétologie, Toulouse, France. University Paul Sabatier, Toulouse, France
| | - M Stevens
- Naval Research Laboratory, Washington, DC, USA
| | - A I F Stewart
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - A Stiepen
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - S Stone
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - V Tenishev
- CLaSP Department, University of Michigan, Ann Arbor, MI, USA
| | - E Thiemann
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - R Tolson
- National Institute of Aerospace, Hampton, VA, USA
| | - D Toublanc
- CNRS/Institut de Recherche en Astrophysique et Planétologie, Toulouse, France. University Paul Sabatier, Toulouse, France
| | - M Vogt
- Department of Astronomy, Boston University, Boston, MA, USA
| | - T Weber
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - P Withers
- Department of Astronomy, Boston University, Boston, MA, USA
| | - T Woods
- Laboratory for Atmospheric and Space Physics, University. of Colorado, Boulder, CO, USA
| | - R Yelle
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
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Leonhäuser D, Vogt M, Tolba RH, Grosse JO. Potential in two types of collagen scaffolds for urological tissue engineering applications – Are there differences in growth behaviour of juvenile and adult vesical cells? J Biomater Appl 2015; 30:961-73. [DOI: 10.1177/0885328215610824] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The aging society has a deep impact on patient care in urology. The number of patients in need of partial or whole bladder wall replacement is increasing simultaneously with the number of cancer incidents. Therefore, urological research requires a model of bladder wall replacement in adult and elderly people. Two types of porcine collagen I/III scaffolds were used in vitro for comparison of cell growth of two different pig breeds at different growth stages. Scaffolds were characterised with scanning electron and laser scanning microscopy. Urothelial and detrusor smooth muscle cells were isolated from 15 adult Göttingen minipigs and 15 juvenile German Landrace pigs. Growth behaviour was examined in cell culture and seeded onto the collagen scaffolds via immunohistochemistry, two-photon laser scanning microscopy and a viability assay. The collagen scaffolds showed different structured surfaces which are appropriate for seeding of the two different cell types. Moisturisation of the scaffolds resulted in a change of the structure. Cell growth of German Landrace urothelial cells and smooth muscle cells was significantly higher than cell growth of the Göttingen minipig cells. Seeding of scaffolds with both cell types from both pig races was possible which could be shown by immunohistochemistry and two-photon laser scanning microscopy. Growth behaviour on the scaffolds was significantly increased for the German Landrace compared to Göttingen minipig. Nevertheless, seeding with the adult Göttingen minipig cells resulted in a closed layer on the surface and urothelial cells and smooth muscle cells showed increasing growth until day 14. The results show that these collagen scaffolds are adequate for the seeding with vesical cells. Moreover, they seem appropriate for the use as an in vitro model for the adult or elderly as the cells of the adult Göttingen minipig too, show good growth behaviour.
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Affiliation(s)
- D Leonhäuser
- Department of Urology, RWTH Aachen University Hospital, Aachen, Germany
| | - M Vogt
- Interdisciplinary Center for Clinical Research IZKF Aachen, RWTH Aachen University Hospital, Aachen, Germany
| | - RH Tolba
- Institute for Laboratory Animal Science and Experimental Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - JO Grosse
- Department of Urology, RWTH Aachen University Hospital, Aachen, Germany
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Lichtenberg C, Viciu L, Vogt M, Rodríguez-Lugo RE, Adelhardt M, Sutter J, Khusniyarov MM, Meyer K, de Bruin B, Bill E, Grützmacher H. Low-valent iron: an Fe(I) ate compound as a building block for a linear trinuclear Fe cluster. Chem Commun (Camb) 2015. [PMID: 26221636 DOI: 10.1039/c5cc04908c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A low-valent trinuclear iron complex with an unusual linear Fe(I)-Fe(II)-Fe(I) unit is presented. It is accessed in a rational approach using a salt metathesis reaction between a new anionic Fe(I) containing heterocycle and FeCl2. Its electronic structure was studied by single crystal XRD analysis, EPR and Mössbauer spectroscopy, and magnetic susceptibility measurements.
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Affiliation(s)
- C Lichtenberg
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093, Switzerland.
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Vogt M, Helle K, Zeiner T, Haep S, Bathen D. Druckwasserwäsche mit Membrankontaktoren zur CO 2-Abtrennung aus Reformat- und Rohbiogas. CHEM-ING-TECH 2015. [DOI: 10.1002/cite.201550031] [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]
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Kühn A, Meierhofer C, Rutz T, Rondak I, Röhlig C, Fratz S, Ewert P, Vogt M. Non-Volumetric Echocardiographic Indices of Right Ventricular Systolic Function in Ebstein’s Anomaly: Comparison with CMR Derived Ejection Fraction in 49 Patients. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kasnar-Samprec J, Cleuziou J, Ono M, Burri M, Strbad M, Vogt M, Lange R, Hörer J. Congenital Heart Surgery in Adults: Improvement of Surgical Performance despite Increasing Complexity. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1556037] [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: 10/23/2022]
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Ono M, Cleuziou J, Kasnar-Samprec J, Burri M, Strbad M, Vogt M, Hager A, Lange R, Schreiber C, Hörer J. Bessere Hämodynamik und Leistungsfähigkeit im Langzeitverlauf bei Patienten mit pulsatilem pulmonalen Fluss nach atrioventrikulären Fontanmodifikation. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555989] [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: 10/23/2022]
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Kühn A, Lange R, Meierhofer C, Schreiber C, Müller J, Hörer J, Ewert P, Vogt M. Clinical and Hemodynamic Effects of the Cone Operation in Patients with Ebstein’s Anomaly. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555960] [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: 10/23/2022]
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Vogt M, Müller J, Kühn A, Elmenhorst J, Mühlbauer F, Oberhoffer R. Cardiac Adaptation of the Maternal Heart During Pregnancy: A Color-Coded Tissue Doppler Imaging Study - Feasibility, Reproducibility and Course during Pregnancy. Ultraschall Med 2015; 36:e1. [PMID: 24824760 DOI: 10.1055/s-0034-1366520] [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: 06/03/2023]
Affiliation(s)
- M Vogt
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München
| | - J Müller
- Institute of Preventive Pediatrics, Technische Universität München
| | - A Kühn
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München
| | - J Elmenhorst
- Institute of Preventive Pediatrics, Technische Universität München
| | - F Mühlbauer
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München
| | - R Oberhoffer
- Institute of Preventive Pediatrics, Technische Universität München
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Vogt M, Müller J, Kühn A, Elmenhorst J, Mühlbauer F, Oberhoffer R. Cardiac Adaptation of the Maternal Heart During Pregnancy: A Color-Coded Tissue Doppler Imaging Study--Feasibility, Reproducibility and Course during Pregnancy. Ultraschall Med 2015; 36:270-275. [PMID: 24729437 DOI: 10.1055/s-0034-1366359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE Tissue Doppler imaging (TDI) allows the noninvasive quantification of global and regional myocardial function. Since there are changing loading conditions during pregnancy, this study aimed to determine maternal myocardial adaptation in normal pregnancy with TDI and tracking of the heart cycle. PATIENTS AND METHODS 106 pregnant women, mean age of 33.4 years at baseline, prospectively underwent a total of 161 color-coded tissue Doppler echocardiography samples throughout pregnancy. In further offline analysis of the global and regional myocardial function of the basal segments, maximum tissue velocities at systole (Sm), in the early filling phase of diastole (Em) and during atrial contraction (Am) were assessed. RESULTS From those stored samples, S-wave, E-wave and A-wave velocities could be obtained with a feasibility of 94.8 % and with good inter- and intra-observer variability. S-wave velocity first showed an increase during early pregnancy followed by a decline to baseline characteristics at the 3 rd trimester. The E-wave velocity declined throughout pregnancy. The A-wave velocity increased continuously. These alterations result in a continuous decline of Em/Am ratio as pregnancy advances. CONCLUSION Alterations in tissue velocities during pregnancy reflect maturational changes that mimic "diastolic dysfunction". Based on an understanding of those normal physiological changes, TDI may therefore assist in the monitoring and/or detecting of subclinical myocardial dysfunction during pregnancy.
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Affiliation(s)
- M Vogt
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Germany
| | - J Müller
- Institute of Preventive Pediatrics, Technische Universität München, Germany
| | - A Kühn
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Germany
| | - J Elmenhorst
- Institute of Preventive Pediatrics, Technische Universität München, Germany
| | - F Mühlbauer
- Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Germany
| | - R Oberhoffer
- Institute of Preventive Pediatrics, Technische Universität München, Germany
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Kaufner L, Schuster M, Vogt M, Kröncke T, von Heymann C. Rezidivierende postpartale Blutung nach Notsectio. Transfusionsmedizin 2015. [DOI: 10.1055/s-0034-1396192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- L. Kaufner
- Klinik für Anästhesiologie mit Schwerpunkt operative Intensivmedizin, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum und Charité Campus Mitte, Berlin
| | - M. Schuster
- Klinik für Anästhesiologie mit Schwerpunkt operative Intensivmedizin, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum und Charité Campus Mitte, Berlin
| | - M. Vogt
- Klinik für Geburtsmedizin, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum und Charité Campus Mitte, Berlin
| | - T. Kröncke
- Klinik für Radiologie, Charité – Universitätsmedizin Berlin, Charité Campus Mitte, Berlin
| | - C. von Heymann
- Klinik für Anästhesiologie mit Schwerpunkt operative Intensivmedizin, Charité – Universitätsmedizin Berlin, Campus Virchow Klinikum und Charité Campus Mitte, Berlin
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Lange R, Burri M, Eschenbach LK, Horer J, Fratz S, Kuehn A, Schreiber C, Vogt M. 194 * DA SILVA'S CONE REPAIR FOR EBSTEIN'S ANOMALY: EFFECT ON RIGHT VENTRICULAR SIZE AND FUNCTION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sigler M, Huell S, Ruschewski W, Foth R, Hörer J, Vogt M, Tirilomis T, Paul T. Verkalkungen kardiovaskulärer Implantate: PTFE vs. Polyester im zeitlichen Verlauf. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394075] [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: 10/24/2022]
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Rutz T, Kühn A, Müller J, Meierhofer C, Hager A, Fratz S, Wolf P, Rondak I, Ewert P, Vogt M. Determinants of Exercise Capacity in Patients with Ebstein’s Anomaly: Is it all about the Left Ventricle? Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394028] [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: 10/24/2022]
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Burri M, Hörer J, Kasnar-Samprec J, Cleuziou J, Nöbauer C, Vogt M, Lange R, Schreiber C. Arteria subclavia Plastik zur Korrektur eines unterbrochenen Aortenbogens. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1393986] [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: 10/24/2022]
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Kusmenkov E, Hörer J, Cleuziou J, Kasnar-Samprec J, Vogt M, Kühn A, Lange R, Schreiber C. Primärkorrektur des Truncus arteriosus communis ohne klappentragendes Conduit vermeidet frühe Reoperationen. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1394078] [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: 10/24/2022]
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35
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Beumers P, Pauls C, Koß HJ, Vogt M, Bathen D, Bardow A. Auswertung von Ramanspektren aus der Aminwäsche mit Indirect Hard Modeling (IHM). CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Vogt M, Goldschmidt R, Pasel C, Bathen D, Pauls C, Bardow A. Technikumsuntersuchungen zur Steuerung einer CO 2-Gaswäsche für Kraftwerksrauchgase mittels Raman-Spektroskopie. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450292] [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: 11/07/2022]
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Carriero A, Doube M, Vogt M, Busse B, Zustin J, Levchuk A, Schneider P, Müller R, Shefelbine SJ. Altered lacunar and vascular porosity in osteogenesis imperfecta mouse bone as revealed by synchrotron tomography contributes to bone fragility. Bone 2014; 61:116-24. [PMID: 24373921 DOI: 10.1016/j.bone.2013.12.020] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [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: 08/02/2013] [Revised: 11/25/2013] [Accepted: 12/17/2013] [Indexed: 12/11/2022]
Abstract
Osteogenesis imperfecta (brittle bone disease) is caused by mutations in the collagen genes and results in skeletal fragility. Changes in bone porosity at the tissue level indicate changes in bone metabolism and alter bone mechanical integrity. We investigated the cortical bone tissue porosity of a mouse model of the disease, oim, in comparison to a wild type (WT-C57BL/6), and examined the influence of canal architecture on bone mechanical performance. High-resolution 3D representations of the posterior tibial and the lateral humeral mid-diaphysis of the bones were acquired for both mouse groups using synchrotron radiation-based computed tomography at a nominal resolution of 700nm. Volumetric morphometric indices were determined for cortical bone, canal network and osteocyte lacunae. The influence of canal porosity architecture on bone mechanics was investigated using microarchitectural finite element (μFE) models of the cortical bone. Bright-field microscopy of stained sections was used to determine if canals were vascular. Although total cortical porosity was comparable between oim and WT bone, oim bone had more numerous and more branched canals (p<0.001), and more osteocyte lacunae per unit volume compared to WT (p<0.001). Lacunae in oim were more spherical in shape compared to the ellipsoidal WT lacunae (p<0.001). Histology revealed blood vessels in all WT and oim canals. μFE models of cortical bone revealed that small and branched canals, typical of oim bone, increase the risk of bone failure. These results portray a state of compromised bone quality in oim bone at the tissue level, which contributes to its deficient mechanical properties.
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Affiliation(s)
- A Carriero
- Department of Bioengineering, Imperial College London, UK; Institute for Biomechanics, ETH Zürich, Switzerland.
| | - M Doube
- Department of Bioengineering, Imperial College London, UK
| | - M Vogt
- Department of Bioengineering, Imperial College London, UK
| | - B Busse
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Germany
| | - J Zustin
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Germany
| | - A Levchuk
- Institute for Biomechanics, ETH Zürich, Switzerland
| | - P Schneider
- Institute for Biomechanics, ETH Zürich, Switzerland
| | - R Müller
- Institute for Biomechanics, ETH Zürich, Switzerland
| | - S J Shefelbine
- Department of Bioengineering, Imperial College London, UK
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Achermann Y, Stasch P, Preiss S, Lucke K, Vogt M. Characteristics and treatment outcomes of 69 cases with early prosthetic joint infections of the hip and knee. Infection 2014; 42:511-9. [DOI: 10.1007/s15010-014-0584-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 01/03/2014] [Indexed: 01/27/2023]
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Lawn SD, Kerkhoff AD, Vogt M, Wood R. Diagnostic and prognostic value of serum C-reactive protein for screening for HIV-associated tuberculosis. Int J Tuberc Lung Dis 2013; 17:636-43. [PMID: 23575330 DOI: 10.5588/ijtld.12.0811] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rapid means of ruling in or ruling out tuberculosis (TB) would permit more efficient management of patients starting antiretroviral treatment (ART). OBJECTIVE To assess the diagnostic and prognostic utility of C-reactive protein (CRP) among patients being screened for TB before ART in a South African ART clinic. DESIGN Patients were microbiologically screened for TB regardless of symptoms; serum CRP was measured, and mortality at 3 months was assessed. RESULTS Among 496 patients (median CD4 count 171 cells/l), culture-positive TB was diagnosed in 81 (16.3%). CRP concentrations were much higher among TB cases (median 57.8 mg/l, IQR 20.0202.7) than in those without TB (6.4 mg/l, IQR 2.121.8, P < 0.001). Very low (<1.5 mg/l) CRP concentrations excluded TB (100% negative predictive value), whereas very high concentrations (>400 mg/l) were strongly predictive of TB (100% positive predictive value). However, these thresholds encompassed only 14.3% and 2.0%, respectively, of all patients screened and identified only 12.3% of TB cases. CRP concentrations ≥50 mg/l were associated with poor prognostic characteristics, higher mycobacterial load, disseminated disease and greater mortality risk. CONCLUSION CRP concentrations identified groups of patients with very high or very low TB risk, but only in an unacceptably small minority of patients screened. However, in those with confirmed TB, CRP concentrations had useful prognostic value.
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Affiliation(s)
- S D Lawn
- The Desmond Tutu HIV Centre, Institute for Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
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40
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Burri M, Horer J, Kasnar-Samprec J, Cleuziou J, Vogt M, Lange R, Schreiber C. 310 * REPAIR OF INTERRUPTED AORTIC ARCH: RESULTS UP TO 35 YEARS. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.310] [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: 11/12/2022] Open
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41
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Vitanova K, Cleuziou J, Horer J, Kasnar-Samprec J, Vogt M, Schreiber C, Lange R. 220 * WHICH TYPE OF CONDUIT TO CHOOSE FOR RIGHT VENTRICULAR OUTFLOW TRACT RECONSTRUCTION IN PATIENTS BELOW ONE YEAR OF AGE? Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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42
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Sailley S, Vogt M, Doney S, Aita M, Bopp L, Buitenhuis E, Hashioka T, Lima I, Le Quéré C, Yamanaka Y. Comparing food web structures and dynamics across a suite of global marine ecosystem models. Ecol Modell 2013. [DOI: 10.1016/j.ecolmodel.2013.04.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Isolated monarthritis caused by Tropheryma whipplei without involvement of the gastrointestinal tract is rare but is nowadays often described as an early manifestation of the disease. In a male patient with recurrent knee joint arthritis for several years, we could ultimately diagnose Whipple's disease based on PCR positive biopsies of synovial tissue and fluid. Furthermore, the patient was found to be an asymptomatic T. whipplei carrier. With adequate antibiotic therapy the patient has meanwhile fully recovered.
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Affiliation(s)
- P Stasch
- Medizinische Klinik/Abteilung für Rheumatologie, Zuger Kantonsspital, Landhausstr. 11, 6340, Baar, Schweiz
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Martin K, Gertler R, MacGuill M, Mayr N, Hapfelmeier A, Hörer J, Vogt M, Tassani P, Wiesner G. Replacement of aprotinin by ɛ-aminocaproic acid in infants undergoing cardiac surgery: consequences for blood loss and outcome. Br J Anaesth 2013; 110:615-21. [DOI: 10.1093/bja/aes430] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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45
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Hörer J, Neuray C, Vogt M, Cleuziou J, Kasnar-Samprec J, Lange R, Schreiber C. Technical considerations to optimize long term outcome of patients with isolated total anomalous pulmonary venous return. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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46
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Sigler M, Vogt M, Bökenkamp R, Hörer J, Eicken A, Foth R, Ruschewski W, Paul T, Schneider H. Histology of Melody heart valves and surgically implanted RVOT-conduits. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Burri M, Hörer J, Kasnar-Samprec J, Cleuziou J, Vogt M, Lange R, Schreiber C. Aortic arch reconstruction with reversed subclavian flap technique and patch augmentation for IAA: Use of pericardium patch increases rate of aortic arch stenosis. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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48
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Kusmenkov E, Hörer J, Cleuziou J, Kasnar-Samprec J, Vogt M, Kühn A, Lange R, Schreiber C. Feasability of a valveless RV-PA connection in primary repair of common arterial trunk. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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MESH Headings
- Aged
- Autopsy
- Blood/microbiology
- Brain/diagnostic imaging
- Brain/pathology
- Cerebellum/pathology
- Conjunctiva/pathology
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Endocarditis, Bacterial/diagnosis
- Endocarditis, Bacterial/microbiology
- Endocarditis, Bacterial/pathology
- Exanthema/pathology
- Fatal Outcome
- Female
- Humans
- Kidney/diagnostic imaging
- Kidney/pathology
- Lung/diagnostic imaging
- Lung/pathology
- Neisseria sicca/isolation & purification
- Neisseriaceae Infections/diagnosis
- Neisseriaceae Infections/pathology
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Tomography, X-Ray Computed
- Ultrasonography
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Affiliation(s)
- R Sommerstein
- Department of Internal Medicine, Cantonal Hospital Zug, Zug, Switzerland.
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50
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Achermann Y, Sahin F, Schwyzer HK, Kolling C, Wüst J, Vogt M. Characteristics and outcome of 16 periprosthetic shoulder joint infections. Infection 2012; 41:613-20. [PMID: 23124880 DOI: 10.1007/s15010-012-0360-4] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 10/20/2012] [Indexed: 02/07/2023]
Abstract
PURPOSE Shoulder arthroplasties are increasingly performed, but data on periprosthetic joint infections (PJI) in this anatomical position are limited. We retrospectively investigated the characteristics and outcome of shoulder PJI after primary arthroplasty from 1998 to 2010 in a single centre. METHODS Periprosthetic joint infection was defined as periprosthetic purulence, presence of sinus tract or microbial growth. A Kaplan-Meier survival method was used to estimate relapse-free survival of prosthesis. RESULTS From 1,571 primary shoulder prostheses, we evaluated 16 patients with a PJI at different stages, i.e, early (n = 4), delayed (n = 6) and late (n = 6) infections. The median patient age was 67 (range 53-86) years, and 69 % were females. The most commonly isolated microorganism was Propionibacterium acnes in 38 % of patients (monobacterial in four and polymicrobial in two patients). In 14 of the 16 patients, surgical interventions consisting of debridement and implant retention (6 patients), exchange (7) and explantation (1) were performed. Four patients had a relapse of infection with P. acnes (n = 3) or Bacteroides fragilis (n = 1). The relapse-free survival of the prosthesis was 75 % (95 % confidence interval 46-90 %) after 1 and 2 years, 100 % in six patients following the treatment algorithm for hip and knee PJI and 60 % in 10 patients not followed up. All but one of the relapses were previously treated without exchange of the prosthesis. CONCLUSIONS As recommended for hip and knee PJI, we suggest treating shoulder PJI with a low-grade infection by microorganisms such as P. acnes with an exchange of the prosthesis. Cohort studies are needed to verify our results.
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Affiliation(s)
- Y Achermann
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
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