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Stoffers B, Bacmeister L, Braeuninger H, Warnke S, Brehm M, Kim S, Yan I, Becher M, Escher F, Klingel K, Zeller T, Kirchhof P, Blankenberg S, Westermann D, Lindner D. GPR15-mediated T cell recruitment during acute viral myocarditis is associated with improved virus elimination and outcome. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): DZHK
Ernst und Berta Grimmke Stiftung
Background
Myocarditis is an inflammatory disease of the myocardium indicated by mononuclear cell infiltration. It is predominantly caused by infectious agents such as coxsackievirus B3 (CVB3). Especially in young adults, myocarditis is a major source of sudden cardiac arrest. However, its clinical course has a broad spectrum of outcomes, ranging from mild symptoms and complete recovery to cardiac dysfunction and dilated cardiomyopathy. G protein-coupled receptor 15 (GPR15) was identified as a T cell homing receptor in the context of inflammatory intestine and skin diseases. We found Gpr15 to be highly upregulated in the left ventricle (LV) 7 days after CVB3 infection in wild type (WT) mice.
Purpose
GPR15 has not been described in a cardiac context, yet. Our aim was to investigate the role of GPR15 in recruiting immune cell subsets and later in virus elimination during viral myocarditis.
Methods
Gpr15 deficient (Gpr15gfp/gfp) and WT mice were infected intraperitoneal with CVB3 to investigate the acute (6 & 7 days post infection(p.i.)) and the subacute phase (16 days p.i.) of myocarditis. To study differentially expressed genes, LV tissue was used for TaqMan analysis and RNA-sequencing. Inflammation and fibrosis were evaluated on histological level. For functional characterization, healthy and diseased mice were hemodynamically characterized 16 days p.i.. Furthermore, in vitro migration assays were used to study the interaction between GPR15 and its ligands in vitro.
Results
Infected Gpr15gfp/gfp mice exhibited higher upregulation of immune response related genes on mRNA level in the acute phase of myocarditis 7 days p.i.. For instance, Cd8a, a cytotoxic T cell marker, and Foxp3, a regulatory T cell marker, were significantly higher in infected Gpr15gfp/gfp compared to infected WT mice. Bulk RNA-sequencing confirmed that the response to virus did not decline from day 6 to 7 in infected GPR15-deficient mice as observed in infected WT mice. Subsequent gene ontology (GO) term analyses reveled enhanced chemotaxis and cytotoxic T cell-related GO terms in GPR15-deficient mice on day 7.
Among investigated T cell subsets, GPR15 was highest expressed on CD8+ T cell. Its deficiency abolished chemotaxis of T cells, especially of cytotoxic T cells, towards GPR15 ligand in vitro.
In the subacute phase of myocarditis 16 days p.i., viral persistence was observed in more than 85 % of Gpr15gfp/gfp mice. In contrast, more than 70 % of WT mice with verified viremia cleared the virus successfully. Furthermore, Gpr15gfp/gfp mice demonstrated a decreased cardiac function accompanied by increased fibrosis in comparison to WT mice.
Conclusion
Our findings indicate that despite the prolonged inflammatory response, scant virus elimination was presumably caused by decelerated recruitment of cytotoxic T cells leading to impaired outcome in the GPR15-deficient mice.
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Affiliation(s)
- B Stoffers
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - L Bacmeister
- University Hospital Heidelberg , Heidelberg , Germany
| | - H Braeuninger
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - S Warnke
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - M Brehm
- University of Siegen , Siegen , Germany
| | - S Kim
- Thomas Jefferson University , Philadelphia , United States of America
| | - I Yan
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - M Becher
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - F Escher
- Charite Universitatsmedizin Berlin , Berlin , Germany
| | - K Klingel
- University Hospital of Tuebingen, Cardiopathology, Institute of Pathology and Neuropathology , Tuebingen , Germany
| | - T Zeller
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - P Kirchhof
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - S Blankenberg
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - D Westermann
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
| | - D Lindner
- University Heart & Vascular Center Hamburg, Department of Cardiology , Hamburg , Germany
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Neubieser RM, Wree JL, Jagosz J, Becher M, Ostendorf A, Devi A, Bock C, Michel M, Grabmaier A. Low-temperature ALD process development of 200 mm wafer-scale MoS2 for gas sensing application. Micro and Nano Engineering 2022. [DOI: 10.1016/j.mne.2022.100126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Becher M, Flämig M, Rössler EA. Field-cycling 31P and 1H NMR relaxometry studying the reorientational dynamics of glass forming organophosphates. J Chem Phys 2022; 156:074502. [DOI: 10.1063/5.0082566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. Becher
- Nordbayerisches NMR-Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
| | - M. Flämig
- Nordbayerisches NMR-Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
| | - E. A. Rössler
- Nordbayerisches NMR-Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
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Becher M, Heller T, Schwarzenböck S, Kröger JC, Weber MA, Meinel FG. Negative Venous Leg Ultrasound in Acute Pulmonary Embolism: Prevalence, Clinical Characteristics, and Predictors. Diagnostics (Basel) 2022; 12:diagnostics12020520. [PMID: 35204610 PMCID: PMC8871516 DOI: 10.3390/diagnostics12020520] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/15/2022] [Accepted: 02/15/2022] [Indexed: 11/26/2022] Open
Abstract
The purpose of this study was to investigate the prevalence, clinical characteristics, and predictors of negative venous leg ultrasound in acute pulmonary embolism (PE). We retrospectively analyzed a cohort of 168 patients with acute PE (median age 73 years, 44% women) evaluated with complete venous leg ultrasound. A multivariate logistic regression analysis was performed to identify the independent predictors of negative venous ultrasound in acute PE. Venous leg ultrasound was negative for deep venous thrombosis (DVT) in 78 patients (46.4%). Patients with negative venous ultrasound were less likely to have a history of DVT (7.7% vs. 20.0%, p = 0.0273) and had significantly lower D-dimer levels (median 2.5 vs. 6.2 mg/dL p < 0.0001). Negative venous ultrasound was more frequent in PE diagnosed with V/P-SPECT than in PE diagnosed with CT (66.2% vs. 34.0%, p < 0.0001). The prevalence of negative venous ultrasound increased with more peripherally located PE (29.5% for central/lobar, 43.1% for segmental, and 60.6% for subsegmental PE, p = 0.0049). For the multivariate analysis, a diagnosis of PE with V/P-SPECT rather than CT (OR 3.2, p = 0.0056) and lower D-dimer levels (OR 0.94, p = 0.0266) were independent predictors of negative venous ultrasound. In conclusion, venous leg ultrasound was negative for DVT in almost half of patients with acute PE. Negative venous ultrasound was more common in patients with no history of DVT, lower D-dimer levels, PE diagnosed with V/P-SPECT rather than CT, and more peripherally located PE.
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Affiliation(s)
- Mattes Becher
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, 18057 Rostock, Germany; (M.B.); (T.H.); (J.-C.K.); (M.-A.W.)
| | - Thomas Heller
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, 18057 Rostock, Germany; (M.B.); (T.H.); (J.-C.K.); (M.-A.W.)
| | - Sarah Schwarzenböck
- Department of Nuclear Medicine, University Medical Centre Rostock, 18055 Rostock, Germany;
| | - Jens-Christian Kröger
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, 18057 Rostock, Germany; (M.B.); (T.H.); (J.-C.K.); (M.-A.W.)
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, 18057 Rostock, Germany; (M.B.); (T.H.); (J.-C.K.); (M.-A.W.)
| | - Felix G. Meinel
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, 18057 Rostock, Germany; (M.B.); (T.H.); (J.-C.K.); (M.-A.W.)
- Correspondence:
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Becher M, Körber T, Döß A, Hinze G, Gainaru C, Böhmer R, Vogel M, Rössler EA. Nuclear Spin Relaxation in Viscous Liquids: Relaxation Stretching of Single-Particle Probes. J Phys Chem B 2021; 125:13519-13532. [PMID: 34860530 DOI: 10.1021/acs.jpcb.1c06722] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Spin-lattice relaxation rates R1(ω,T), probed via high-field and field-cycling nuclear magnetic resonance (NMR), are used to test the validity of frequency-temperature superposition (FTS) for the reorientation dynamics in viscous liquids. For several liquids, FTS is found to apply so that master curves can be generated. The susceptibility spectra are highly similar to those obtained from depolarized light scattering (DLS) and reveal an excess wing. Where FTS works, two approaches are suggested to access the susceptibility: (i) a plot of deuteron R1(T) vs the spin-spin relaxation rate R2(T) and (ii) a plot of R1(T) vs an independently measured reference time τref(T). Using single-frequency scans, (i) allows one to extract the relaxation stretching as well as the NMR coupling constant. Surveying 26 data sets, we find Kohlrausch functions with exponents 0.39 < βK ≤ 0.67. Plots of the spin-spin relaxation rate R2─rescaled by the NMR coupling constant─as a function of temperature allow one to test how well site-specific NMR relaxations couple to a given reference process. Upon cooling of flexible molecule liquids, the site-specific dynamics is found to merge, suggesting that near Tg the molecules reorient essentially as a rigid entity. This presents a possible resolution for the much lower stretching parameters reported here at high temperatures that contrast with the ones that were reported to be universal in a recent DLS study close to Tg. Our analysis underlines that deuteron relaxation is a uniquely powerful tool to probe single-particle reorientation.
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Affiliation(s)
- M Becher
- Anorganische Chemie III and Nordbayerisches NMR Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
| | - Th Körber
- Anorganische Chemie III and Nordbayerisches NMR Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
| | - A Döß
- Department Chemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - G Hinze
- Department Chemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - C Gainaru
- Fakultät Physik, Technische Universität Dortmund, 44221 Dortmund, Germany.,Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - R Böhmer
- Fakultät Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - M Vogel
- Institut für Physik kondensierter Materie, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - E A Rössler
- Anorganische Chemie III and Nordbayerisches NMR Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
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Heller T, Becher M, Kröger JC, Beller E, Heller S, Höft R, Weber MA, Meinel FG. Isolated calf deep venous thrombosis: frequency on venous ultrasound and clinical characteristics. BMC Emerg Med 2021; 21:126. [PMID: 34717549 PMCID: PMC8557054 DOI: 10.1186/s12873-021-00516-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 10/12/2021] [Indexed: 11/24/2022] Open
Abstract
Background It remains controversial whether to include calf veins in the initial ultrasound evaluation of suspected deep venous thrombosis (DVT). We sought to investigate the frequency and clinical characteristics of isolated calf DVT. Materials and methods In this retrospective analysis, we investigated a cohort of 596 patients (median age 69 years, 52.3% women) who had been imaged with complete lower extremity venous duplex ultrasound for suspected acute DVT. Radiology reports were analyzed for the presence and localization of DVT. Clinical information was collected from patients’ electronic charts. Results DVT was found in 157 patients (26.3%), of which 74 patients (47.1%) had isolated calf DVT. Isolated calf DVTs were located in the posterior tibial veins (22 patients, 29.7%), peroneal veins (41 patients, 55.4%) and muscle veins (19 patients, 25.7%). There were no differences in age or sex between patients with isolated calf DVT and patients with proximal DVT. Isolated calf DVT was more commonly associated with leg pain (52.7% vs. 33.7%, p = 0.0234) and less commonly associated with subjective leg swelling (35.1% vs. 55.4%, p = 0.0158) and objectively measured difference in leg circumference (23% vs. 39.8%, p = 0.0268). D-Dimers were significantly lower in patients with isolated lower leg DVT (median 2.3 vs. 6.8 mg/L, p < 0.0001) compared to patients with proximal DVT. Conclusions Isolated calf DVT represents approximately half of DVT cases and has different clinical characteristics than proximal DVT.
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Affiliation(s)
- Thomas Heller
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany.
| | - Mattes Becher
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Jens-Christian Kröger
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Ebba Beller
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Susanne Heller
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Raimund Höft
- Department of Emergency Medicine, University Medical Centre Rostock, Rostock, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Felix G Meinel
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
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Becher M, Wohlfromm T, Rössler EA, Vogel M. Molecular dynamics simulations vs field-cycling NMR relaxometry: Structural relaxation mechanisms in the glass-former glycerol revisited. J Chem Phys 2021; 154:124503. [PMID: 33810699 DOI: 10.1063/5.0048131] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
We combine field-cycling (FC) relaxometry and molecular dynamics (MD) simulations to study the rotational and translational dynamics associated with the glassy slowdown of glycerol. The 1H NMR spin-lattice relaxation rates R1(ω) probed in the FC measurements for different isotope-labelled compounds are computed from the MD trajectories for broad frequency and temperature ranges. We find high correspondence between experiment and simulation. Concerning the rotational motion, we observe that the aliphatic and hydroxyl groups show similar correlation times but different stretching parameters, while the overall reorientation associated with the structural relaxation remains largely isotropic. Additional analysis of the simulation results reveals that transitions between different molecular configurations are slow on the time scale of the structural relaxation at least at sufficiently high temperatures, indicating that glycerol rotates at a rigid entity, but the reorientation is slower for elongated than for compact conformers. The translational contribution to R1(ω) is well described by the force-free hard sphere model. At sufficiently low frequencies, universal square-root laws provide access to the molecular diffusion coefficients. In both experiment and simulation, the time scales of the rotational and translational motions show an unusually large separation, which is at variance with the Stokes-Einstein-Debye relation. To further explore this effect, we investigate the structure and dynamics on various length scales in the simulations. We observe that a prepeak in the static structure factor S(q), which is related to a local segregation of aliphatic and hydroxyl groups, is accompanied by a peak in the correlation times τ(q) from coherent scattering functions.
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Affiliation(s)
- M Becher
- Nordbayerisches NMR-Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
| | - T Wohlfromm
- Institute of Condensed Matter Physics, Technische Universität Darmstadt, Hochschulstraße 6, 64289 Darmstadt, Germany
| | - E A Rössler
- Nordbayerisches NMR-Zentrum, Universität Bayreuth, 95440 Bayreuth, Germany
| | - M Vogel
- Institute of Condensed Matter Physics, Technische Universität Darmstadt, Hochschulstraße 6, 64289 Darmstadt, Germany
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Beller E, Becher M, Meinel FG, Kröger JC, Rajagopal R, Höft R, Weber MA, Heller T. Prevalence and predictors of alternative diagnoses on whole-leg ultrasound negative for acute deep venous thrombosis. BMC Med Imaging 2020; 20:127. [PMID: 33267839 PMCID: PMC7709303 DOI: 10.1186/s12880-020-00527-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/17/2020] [Indexed: 12/20/2022] Open
Abstract
Background To investigate the prevalence, spectrum, and predictors of alternative diagnoses explaining leg symptoms in patients negative for suspected acute deep venous thrombosis (DVT), which can be detected with whole-leg ultrasound. Methods We retrospectively analyzed a cohort of 789 patients (median age 70 years, 50.6% women) evaluated with a whole-leg ultrasound examination for suspected acute DVT within one year. All findings in the radiology report were analyzed and electronic chart review was performed to collect clinical information. Results Ultrasound was negative for acute DVT in 531 patients (67.3%). Among these, alternative diagnoses explaining leg symptoms were seen in 349 patients (65.7%). The most frequent alternative diagnoses were chronic venous insufficiency (147 patients, 27.7%), followed by lymphedema (48 patients, 9.0%) and chronic post-thrombotic changes (41 patients, 7.7%). Patients with alternative diagnoses were older (median 71 vs. 66 years, p = 0.0226), as well as more likely to present with leg swelling (39.5% vs. 23.1%, p = 0.0002), difference in leg circumference (25.5% vs. 14.8%, p = 0.0055) and redness (7.7% vs. 2.7%, p = 0.0213) than patients without alternative diagnosis. Independent predictors of finding alternative diagnoses on whole-leg ultrasound were older age (odds ratio 1.014 per year, p = 0.0119), leg swelling (OR 1.949, p = 0.0020) and history of previous DVT (OR 2.235, p = 0.0154). Conclusions Alternative diagnoses explaining leg symptoms can be detected on whole-leg ultrasound in two thirds of patients with no evidence of acute DVT. Our data supports performing a comprehensive ultrasound evaluation beyond the venous system, particularly, in older patients, who present with leg swelling and a past history of DVT.
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Affiliation(s)
- Ebba Beller
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Mattes Becher
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Felix G Meinel
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany.
| | - Jens-Christian Kröger
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | | | - Raimund Höft
- Department of Emergency Medicine, University Medical Centre Rostock, Rostock, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
| | - Thomas Heller
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Germany
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Schrage B, Dabboura S, Yan I, Hilal R, Becher M, Bernhardt A, Kluge S, Reichenspurner H, Blankenberg S, Westermann D. Validation of the SCAI Cardiogenic Shock Classification in 1,039 Patients Presenting with Cardiogenic Shock. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705499] [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]
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10
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Zipfel S, Reiter B, Barten M, Becher M, Lubos E, Söffker G, Westermann D, Kluge S, Reichenspurner H, Bernhardt A. Impella 5.0 Treatment as a Bridge-to-Decision Option after Extracorporeal Life Support in Patients with Unclear Neurologic Outcome. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705493] [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]
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11
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Schrage B, Ruebsamen N, Becher M, Schwarzl M, Grahn H, Soeffker G, Lubos E, Bernhardt A, Reichenspurner H, Blankenberg S, Westermann D. P3438Neuron-specific-enolase as a predictor of overall and neurological outcome after cardiopulmonary resuscitation in patients with VA-ECMO. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B Schrage
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - N Ruebsamen
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - M Becher
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - M Schwarzl
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - H Grahn
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - G Soeffker
- University Medical Center Hamburg Eppendorf, Department for Intensive Care Medicine, Hamburg, Germany
| | - E Lubos
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - A Bernhardt
- University Heart Center Hamburg, Department of Cardiovascular Surgery, Hamburg, Germany
| | - H Reichenspurner
- University Heart Center Hamburg, Department of Cardiovascular Surgery, Hamburg, Germany
| | - S Blankenberg
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
| | - D Westermann
- University Heart Center Hamburg, Department for General and Interventional Cardiology, Hamburg, Germany
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Schrage B, Becher M, Schwarzl M, Grahn H, Söffker G, Lubos E, Bernhardt A, Reichenspurner H, Blankenberg S, Westermann D. Percutaneous Unloading of the Left Ventricle During Extracorporeal Membrane Oxygenation in Cardiogenic Shock - Ongoing Experience from a High-Volume Centre. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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13
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Schrage B, Rübsamen N, Becher M, Schwarzl M, Grahn H, Söffker G, Lubos E, Bernhardt A, Reichenspurner H, Blankenberg S, Westermann D. Neuron-Specific-Enolase as a Predictor of Overall and Neurological Outcome After Cardiopulmonary Resuscitation in Patients with VA-ECMO. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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14
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Becher M, Sinning C, Schrage B, Fluschnik N, Waldeyer C, Seiffert M, Bernhardt A, Reichenspurner H, Blankenberg S, Twerenbold R, Westermann D. Risk Prediction in Patients with Venoarterial Extracorporeal Membrane Oxygenation for Cardiopulmonary Support: Insights from a European Nationwide Registry. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1627934] [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: 10/28/2022]
Affiliation(s)
- M. Becher
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
| | - C. Sinning
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
| | - B. Schrage
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
| | - N. Fluschnik
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
| | - C. Waldeyer
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
| | - M. Seiffert
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
| | - A. Bernhardt
- Universitäres Herzzentrum Hamburg, Hamburg, Germany
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Schrage B, Becher M, Schwarzl M, Grahn H, Bernhardt A, Blankenberg S, Reichenspurner H, Westermann D. Percutaneous Unloading of the Left Ventricle during Extracorporeal Membrane Oxygenation in Cardiogenic Shock - Ongoing Experience from a High-volume Centre. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1627872] [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: 10/28/2022]
Affiliation(s)
- B. Schrage
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - M. Becher
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - M. Schwarzl
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - H. Grahn
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - A. Bernhardt
- Department of Cardiovascular Surgery, University Heart Center Hamburg, Hamburg, Germany
| | - S. Blankenberg
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - H. Reichenspurner
- Department of Cardiovascular Surgery, University Heart Center Hamburg, Hamburg, Germany
| | - D. Westermann
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
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16
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Becher M, Olofsson J, Berglund L, Klaminder J. Decreased cryogenic disturbance: one of the potential mechanisms behind the vegetation change in the Arctic. Polar Biol 2017. [DOI: 10.1007/s00300-017-2173-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Kresse B, Becher M, Privalov AF, Hofmann M, Rössler EA, Vogel M, Fujara F. 1H NMR at Larmor frequencies down to 3Hz by means of Field-Cycling techniques. J Magn Reson 2017; 277:79-85. [PMID: 28258024 DOI: 10.1016/j.jmr.2017.02.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 06/06/2023]
Abstract
Field-Cycling (FC) NMR experiments were carried out at 1H Larmor frequencies down to about 3Hz. This could be achieved by fast switching a high polarizing magnetic field down to a low evolution field which is tilted with respect to the polarization field. Then, the low frequency Larmor precession of the nuclear spin magnetization about this evolution field is registered by means of FIDs in a high detection field. The crucial technical point of the experiment is the stabilization of the evolution field, which is achieved by compensating for temporal magnetic field fluctuations of all three spatial components. The paper reports on some other basic low field experiments such as the simultaneous measurement of the Larmor frequency and the spin-lattice relaxation time in such small fields as well as the irradiation of oscillating transversal magnetic field pulses at very low frequencies as a novel method for field calibration in low field FC NMR. The potential of low field FC is exemplified by the 1H relaxation dispersion of water at frequencies below about 2kHz stemming from the slow proton exchange process.
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Affiliation(s)
- B Kresse
- Institut für Festkörperphysik, TU Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany.
| | - M Becher
- Institut für Festkörperphysik, TU Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
| | - A F Privalov
- Institut für Festkörperphysik, TU Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
| | - M Hofmann
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
| | - E A Rössler
- Experimentalphysik II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - M Vogel
- Institut für Festkörperphysik, TU Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
| | - F Fujara
- Institut für Festkörperphysik, TU Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
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18
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Flämig M, Becher M, Hofmann M, Körber T, Kresse B, Privalov AF, Willner L, Kruk D, Fujara F, Rössler EA. Perspectives of Deuteron Field-Cycling NMR Relaxometry for Probing Molecular Dynamics in Soft Matter. J Phys Chem B 2016; 120:7754-66. [DOI: 10.1021/acs.jpcb.6b05109] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Flämig
- Experimentalphysik
II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - M. Becher
- Institut
für Festkörperphysik, TU Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Germany
| | - M. Hofmann
- Experimentalphysik
II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - T. Körber
- Experimentalphysik
II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - B. Kresse
- Institut
für Festkörperphysik, TU Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Germany
| | - A. F. Privalov
- Institut
für Festkörperphysik, TU Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Germany
| | - L. Willner
- Institute
of Complex Systems, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - D. Kruk
- Faculty of Mathematics and Computer Science, University of Warmia & Mazury, Słoneczna 54, 10-710 Olsztyn, Poland
| | - F. Fujara
- Institut
für Festkörperphysik, TU Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Germany
| | - E. A. Rössler
- Experimentalphysik
II, Universität Bayreuth, 95440 Bayreuth, Germany
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19
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Jouini L, Sahli CA, Laaouini N, Ouali F, Youssef IB, Dakhlaoui B, Othmeni R, Ouennich F, Fredj SH, Siala H, Becher M, Toumi NE, Fattoum S, Hafsia R, Bibi A, Messaoud T. Association between clinical expression and molecular heterogeneity in β-thalassemia Tunisian patients. Mol Biol Rep 2013; 40:6205-12. [DOI: 10.1007/s11033-013-2732-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 09/14/2013] [Indexed: 10/26/2022]
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20
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Roy R, Kukucka M, Messroghli D, Brodarac A, Becher M, Choi YH, Tschöpe C, Stamm C. Placenta-derived mesenchymal stem cells for allogenic cardiac cell therapy. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297675] [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: 10/14/2022]
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21
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Abstract
The article gives a comprehensive overview of hydrogen storage in carbon nanostructures, including experimental results and theoretical calculations. Soon after the discovery of carbon nanotubes in 1991, different research groups succeeded in filling carbon nanotubes with some elements, and, therefore, the question arose of filling carbon nanotubes with hydrogen by possibly using new effects such as nano-capillarity. Subsequently, very promising experiments claiming high hydrogen storage capacities in different carbon nanostructures initiated enormous research activity. Hydrogen storage capacities have been reported that exceed the benchmark for automotive application of 6.5 wt% set by the U.S. Department of Energy. However, the experimental data obtained with different methods for various carbon nanostructures show an extreme scatter. Classical calculations based on physisorption of hydrogen molecules could not explain the high storage capacities measured at ambient temperature, and, assuming chemisorption of hydrogen atoms, hydrogen release requires temperatures too high for technical applications. Up to now, only a few calculations and experiments indicate the possibility of an intermediate binding energy. Recently, serious doubt has arisen in relation to several key experiments, causing considerable controversy. Furthermore, high hydrogen storage capacities measured for carbon nanofibers did not survive cross-checking in different laboratories. Therefore, in light of today's knowledge, it is becoming less likely that at moderate pressures around room temperature carbon nanostructures can store the amount of hydrogen required for automotive applications.
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Affiliation(s)
- M Hirscher
- Max-Planck-Institut für Metallforschung, Stuttgart, Germany
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22
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Skákalová V, Quintel A, Choi YM, Roth S, Becher M, Hirscher M. Chemical processes during solid state reaction of carbon with alkali salts prepared for gravimetric hydrogen storage measurements. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)01481-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Robitaille Y, Lopes-Cendes I, Becher M, Rouleau G, Clark AW. The neuropathology of CAG repeat diseases: review and update of genetic and molecular features. Brain Pathol 1997; 7:901-26. [PMID: 9217975 PMCID: PMC8098401 DOI: 10.1111/j.1750-3639.1997.tb00893.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Classification of inherited neurodegenerative diseases is increasingly based on their genetic features, which supplement, clarify, and sometimes replace the older clinical and pathologic schemata. This change has been particularly rapid and impressive for the CAG repeat disorders. In Huntington's disease, X-linked spinobulbar muscular atrophy, dentatorubropallidoluysian atrophy, and a series of autosomal dominant cerebellar atrophies, genetic advances have resolved many nosologic issues, and opened new avenues for exploration of pathogenesis. In this review, we summarize classic and current concepts in neuropathology of these CAG repeat diseases.
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Affiliation(s)
- Y Robitaille
- Department of Pathology, University of Montreal, Quebec, Canada.
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24
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Bao J, Sharp AH, Wagster MV, Becher M, Schilling G, Ross CA, Dawson VL, Dawson TM. Expansion of polyglutamine repeat in huntingtin leads to abnormal protein interactions involving calmodulin. Proc Natl Acad Sci U S A 1996; 93:5037-42. [PMID: 8643525 PMCID: PMC39402 DOI: 10.1073/pnas.93.10.5037] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Huntington's disease (HD) is an inherited neurodegenerative disorder associated with expansion of a CAG repeat in the IT15 gene. The IT15 gene is translated to a protein product termed huntingtin that contains a polyglutamine (polyGln) tract. Recent investigations indicate that the cause of HD is expansion of the polyGln tract. However, the function of huntingtin and how the expanded polyGln tract causes HD is not known. We investigate potential protein-protein interactions of huntingtin using affinity resins. Huntingtin from brain extracts is retained on calmodulin(CAM)-Sepharose in a calcium-dependent fashion. We purify rat huntingtin to apparent homogeneity using a combination of DEAE-cellulose column chromatography, ammonium sulfate precipitation, and preparative SDS/PAGE. Purified rat huntingtin does not interact with CAM directly as revealed by 125I-CAM overlay. Huntingtin forms a large CAM-containing complex of over 1,000 kDa in the presence of calcium, which partially disassociates in the absence of calcium. Furthermore, an increased amount of mutant huntingtin from HD patient brains is retained on CAM-Sepharose compared to normal huntingtin from control patient brains, and the mutant allele is preferentially retained on CAM-Sepharose in the absence of calcium. These results suggest that huntingtin interacts with other proteins including CAM and that the expansion of polyGln alters this interaction.
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Affiliation(s)
- J Bao
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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25
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Abstract
A direct method for the determination of piroxicam in plasma is described. Plasma is directly injected onto the extraction column (10 mm x 2 mm I.D., packed with 40-microns Bond Elut C2) where proxicam is separated from the plasma concomitants using a solid-phase extraction procedure. Using a laboratory-made on-line column-switching system, the drug is quantitatively transferred and separated on the analytical column (15 cm x 4.6 mm I.D., Supelcosil LC18 DB, 5 microns) followed by determination using ultraviolet absorption at 331 nm. Validation of the method demonstrated a good recovery (100%), sensitivity (limit of determination 0.2 microgram/ml, based on a 20-microliters sample volume), accuracy and precision (better than 5%). The developed method has been adopted for studying the steady-state pharmacokinetics of the drug.
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Affiliation(s)
- K Saeed
- Nycomed Pharma A/S, Research and Development Pharmaceuticals, Oslo, Norway
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26
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Furst W, Becher M. [Homologs of 2-acetamino-4-nitropropoxybenzene (Falimint). 2. Metabolism of homologs]. Pharmazie 1991; 46:356. [PMID: 1896481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- W Furst
- Sektion Pharmazie der Martin-Luther-Universitat Halle-Wittenberg
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27
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Metzner J, Becher M, Fürst W, Gerlach K. [Pharmaceutical and biopharmaceutical evaluation of acetylaminonitropropoxybenzolum (Falimint). 11. Plasma levels and urinary elimination in single and multiple administration]. Pharmazie 1990; 45:693. [PMID: 2284320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- J Metzner
- Zentralinstitut für Apothekenwesen und Medizintechnik, Martin-Luther-Universität Halle-Wittenberg
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28
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Fürst W, Becher M. [Pharmaceutical and biopharmaceutical evaluation of acetylaminonitropopoxybenzolum (Falimint). 10. Biotransformation of the active substance in chick embryo and in in vitro systems]. Pharmazie 1990; 45:534-5. [PMID: 2236198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- W Fürst
- Sektion Pharmazie, Martin-Luther-Universität Halle-Wittenberg
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29
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Fürst W, Becher M. [The pharmaceutical and biopharmaceutical evaluation of acetylaminonitropropoxybenzene (Falimint). Biotransformation of the agent in various animal species]. Pharmazie 1990; 45:440-1. [PMID: 2402533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- W Fürst
- Sektion Pharmazie der Martin-Luther-Universität Halle-Wittenberg
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30
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Holmes SB, Becher M, Karande U, Riley K. Research on every rung of the clinical ladder. Am J Nurs 1989; 89:246, 248, 250. [PMID: 2916603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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31
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Becher M, Fürst W. [Pharmaceutical and biopharmaceutical evaluation of acetylaminonitropropoxybenzolum (Falimint). 8. Biotransformation of the active agents]. Pharmazie 1989; 44:56-7. [PMID: 2786218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Two metabolites of Falimint which have not been elucidated till now were demonstrated to be the glucuronides of 2-acetamino-4-nitro-phenol and 2-amino-4-nitro-phenol. A further metabolite was found by isolation with adsorption resins and identified to be the sulfuric acid conjugate of 2-amino-4-nitro-phenol.
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Affiliation(s)
- M Becher
- Sektion Pharmazie, Martin-Luther-Universität Halle-Wittenberg
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32
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Minda R, Koch RD, Freitag J, Freitag G, Becher M. [Correlation between clinical and paraclinical findings in brain tumors in comparison with the operation site]. Psychiatr Neurol Med Psychol (Leipz) 1988; 40:75-83. [PMID: 3375388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
On the basis of clinical material consisting of 147 brain tumors, the authors carry out a comparative investigation involving the site of the ensuing operation to ascertain the accuracy of the clinical and paraclinical diagnoses. Computed tomographic findings were deliberately excluded with the intention of focusing on the accuracy attainable by traditional means. Clinical findings, X-ray examination of the skull, ophthalmological findings, electroencephalographic and echoencephalographic data, nuclear diagnosis, and angiographic findings were all taken into account.
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Affiliation(s)
- R Minda
- Klinik und Poliklinik für Chirurgie, Medizinischen Akademie Magdeburg
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33
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Fürst W, Gerlach K, Becher M. [Pharmaceutic and biopharmaceutic assessment of acetylaminopropoxybenzolum (Falimint). 7. The buccal resorption of Falimint]. Pharmazie 1986; 41:154. [PMID: 3487803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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34
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Krumbholz S, Willenberg E, Becher M, Barthel G. [Lumbar lipomeningocele (case report)]. Psychiatr Neurol Med Psychol (Leipz) 1978; 30:624-8. [PMID: 733988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The authors describe a case of spinal lipomeningocele at the L2 to L4 level, detailing the properties of growth, clinical characteristics, diagnosis, and surgical therapy of such types of swelling.
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35
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Willgeroth C, Becher M, Zugehör M. [Idiopathic adrenal cortex dystrophy with the clinical picture of Addison's disease]. Z Gesamte Inn Med 1977; 32:100-3. [PMID: 857450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Clinical and autopsy findings are reported of three cases of Addisons disease due to idiopathic dystrophy of the adrenal cortex as seen in two women, 20 and 37 years of age respectively as well as a boy of 14 years. Idiopathic dystrophy of the adrenal cortex as a cause of Addisons disease has become aware of more and more frequently for some years. Its classification as an auto-aggression disease has been made a subject for discussion. Morphological findings and immunological investigations with three own cases confirm this conception. This disease should be reminded of with regard to the problem of clinically diagnosing it and the fatal prognosis of untreated cases.
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36
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Müller D, Becher M, Krell D. [Correlation between reflex behavior and EEG in a brain-stem tumor]. Psychiatr Neurol Med Psychol (Leipz) 1976; 28:174-80. [PMID: 967949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In a female patient with a tumour of the brain stem the e.e.g. showed signs of increasing general functional disorders and additional transient high voltage monographic waves with bilateral frontal and central accentuation, which we regarded as brain stem disturbances. At the same time the authors observed a characteristic inhibition of the amplitude of brain reflexes as well as high phases of a polyphasic stimulation--response potential with stimulation of the tibial nerve. Beside these inhibition phenomena, signs of disinhibition were verified (nociceptive, trigemino-trigeminal reflex, polyphasic disinhibited brain reflex?). The photostimulation was without influence on the sensitivity of motoneurons.
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37
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Müller GW, Otto HJ, Freitag J, Freitag G, Becher M. [Excretion urography, radionephrographic, and sequence scintigraphic studies on experimental pyelonephritis in dogs]. Z Urol Nephrol 1975; 68:341-6. [PMID: 1229763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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38
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39
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Atlas SM, Becher M, Mark HF. Polymers as conductors and semi-conductors. POLYM ENG SCI 1961. [DOI: 10.1002/pen.760010406] [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: 11/09/2022]
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