1
|
Merker H, Slieker J, Frey M, Soppe S, Keerl A, Wirsching A, Nocito A. Risk of conversion after intended total extraperitoneal hernia repair for inguinal hernia depends on type of previous abdominal surgery. Hernia 2024:10.1007/s10029-024-02997-y. [PMID: 38625434 DOI: 10.1007/s10029-024-02997-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 02/18/2024] [Indexed: 04/17/2024]
Abstract
PURPOSE Risk of total extraperitoneal hernia repair (TEP) in patients with previous lower abdominal surgery (PLAS) is still debated. The present study was designed to assess the rate of conversion in TEP for inguinal hernia stratified by type of PLAS. METHODS Variables on patients undergoing TEP inguinal hernia repair at our center were prospectively collected between July 2012 and May 2018. Patients with PLAS were compared to patients without PLAS. Furthermore, the most frequent subtypes of PLAS were defined and TEP conversion rate was stratified according to type of PLAS. RESULTS A total of 1589 patients with TEP inguinal hernia repair were identified including 152 (9.6%) patients with PLAS. Operative time was increased in patients with PLAS (70 vs. 60 min, p < 0.001). Conversion from TEP to transabdominal preperitoneal patch plasty (TAPP) or Lichtenstein open inguinal hernia repair was eight-times more frequent after PLAS (8% vs. 1%, p < 0.001). Considering type of PLAS, open appendectomy was most frequently encountered, followed by multiple PLAS and surgery to the bladder and prostate (53%, 11% and 10%). After stratification for type of PLAS, conversions were most frequently found after previous surgery to the bladder or prostate and after multiple PLAS (conversion rate of 20% and 24%, p < 0.001). In contrast, conversion rate after open appendectomy was not increased. CONCLUSION PLAS to the bladder and prostate is associated with TEP conversion. Selected patients might profit from a different operative approach for inguinal hernia repair.
Collapse
Affiliation(s)
- H Merker
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland
| | - J Slieker
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland
| | - M Frey
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland
| | - S Soppe
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland
| | - A Keerl
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland
| | - A Wirsching
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland
| | - A Nocito
- Department of General-, Visceral- and Vascular Surgery, Cantonal Hospital Baden, Im Ergel 1, 5404, Baden, Switzerland.
| |
Collapse
|
2
|
Mózner O, Moldvay J, Szabó KS, Vaskó D, Domján J, Ács D, Ligeti Z, Fehér C, Hirsch E, Puskás L, Stahl C, Frey M, Sarkadi B. Application of a Receptor-Binding-Domain-Based Simple Immunoassay for Assessing Humoral Immunity against Emerging SARS-CoV-2 Virus Variants. Biomedicines 2023; 11:3193. [PMID: 38137414 PMCID: PMC10740953 DOI: 10.3390/biomedicines11123193] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
We have developed a simple, rapid, high-throughput RBD-based ELISA to assess the humoral immunity against emerging SARS-CoV-2 virus variants. The cDNAs of the His-tagged RBD proteins of the virus variants were stably engineered into HEK cells secreting the protein into the supernatant, and RBD purification was performed by Ni-chromatography and buffer exchange by membrane filtration. The simplified assay uses single dilutions of sera from finger-pricked native blood samples, purified RBD in 96-well plates, and a chromogenic dye for development. The results of this RBD-ELISA were confirmed to correlate with those of a commercial immunoassay measuring antibodies against the Wuhan strain, as well as direct virus neutralization assays assessing the cellular effects of the Wuhan and the Omicron (BA.5) variants. Here, we document the applicability of this ELISA to assess the variant-specific humoral immunity in vaccinated and convalescent patients, as well as to follow the time course of selective vaccination response. This simple and rapid assay, easily modified to detect humoral immunity against emerging SARS-CoV-2 virus variants, may help to assess the level of antiviral protection after vaccination or infection.
Collapse
Affiliation(s)
- Orsolya Mózner
- Research Centre for Natural Sciences, 1117 Budapest, Hungary; (O.M.)
- Doctoral School, Semmelweis University, 1085 Budapest, Hungary
- CelluVir Biotechnology Ltd., 1094 Budapest, Hungary
| | - Judit Moldvay
- CelluVir Biotechnology Ltd., 1094 Budapest, Hungary
- I. Department of Pulmonology, National Korányi Institute of Pulmonology, 1121 Budapest, Hungary
| | - Kata Sára Szabó
- Research Centre for Natural Sciences, 1117 Budapest, Hungary; (O.M.)
| | - Dorottya Vaskó
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | - Júlia Domján
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | - Dorottya Ács
- I. Department of Pulmonology, National Korányi Institute of Pulmonology, 1121 Budapest, Hungary
| | - Zoltán Ligeti
- Research Centre for Natural Sciences, 1117 Budapest, Hungary; (O.M.)
| | - Csaba Fehér
- Biorefinery Research Group, Department of Applied Biotechnology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | - Edit Hirsch
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | | | - Cordula Stahl
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Paul-Wittsack-Str. 10, D-68163 Mannheim, Germany
| | - Manfred Frey
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Paul-Wittsack-Str. 10, D-68163 Mannheim, Germany
| | - Balázs Sarkadi
- Research Centre for Natural Sciences, 1117 Budapest, Hungary; (O.M.)
- Doctoral School, Semmelweis University, 1085 Budapest, Hungary
- CelluVir Biotechnology Ltd., 1094 Budapest, Hungary
| |
Collapse
|
3
|
Levi S, Ahsan M, Webster E, Harvey B, Cantillo E, Chapman-Davis E, Holcomb K, Frey M. 40MO Targetable gene mutations in mucinous ovarian cancer. ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.100820] [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: 02/27/2023] Open
|
4
|
Ahsan M, Levi S, Webster E, Harvey B, Cantillo E, Chapman-Davis E, Holcomb K, Frey M. 22MO Homologous recombination gene mutations in uterine serous cancer: A phenotype of the hereditary breast and ovarian cancer syndrome? ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.100793] [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: 02/27/2023] Open
|
5
|
Bergstrom T, Frey M, Rao S, Bass L. Comparison of post‐operative inflammatory response in horses undergoing elective castration treated preoperatively with ceftiofur crystalline free acid or procaine penicillin G. EQUINE VET EDUC 2022. [DOI: 10.1111/eve.13444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- T. Bergstrom
- Department of Clinical Sciences Colorado State University College of Veterinary Medicine and Biomedical Sciences Fort Collins Colorado USA
| | - M. Frey
- Department of Clinical Sciences Colorado State University College of Veterinary Medicine and Biomedical Sciences Fort Collins Colorado USA
| | - S. Rao
- Department of Clinical Sciences Colorado State University College of Veterinary Medicine and Biomedical Sciences Fort Collins Colorado USA
| | - L. Bass
- Department of Clinical Sciences Colorado State University College of Veterinary Medicine and Biomedical Sciences Fort Collins Colorado USA
| |
Collapse
|
6
|
Simon E, Duffek A, Stahl C, Frey M, Scheurer M, Tuerk J, Gehrmann L, Könemann S, Swart K, Behnisch P, Olbrich D, Brion F, Aït-Aïssa S, Pasanen-Kase R, Werner I, Vermeirssen ELM. Biological effect and chemical monitoring of Watch List substances in European surface waters: Steroidal estrogens and diclofenac - Effect-based methods for monitoring frameworks. Environ Int 2022; 159:107033. [PMID: 34979407 DOI: 10.1016/j.envint.2021.107033] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 06/14/2023]
Abstract
Three steroidal estrogens, 17α-ethinylestradiol (EE2), 17β-estradiol (E2), estrone (E1), and the non-steroidal anti-inflammatory drug (NSAID), diclofenac have been included in the first Watch List of the Water Framework Directive (WFD, EU Directive 2000/60/EC, EU Implementing Decision 2015/495). This triggered the need for more EU-wide surface water monitoring data on these micropollutants, before they can be considered for inclusion in the list of priority substances regularly monitored in aquatic ecosystems. The revision of the priority substance list of the WFD offers the opportunity to incorporate more holistic bioanalytical approaches, such as effect-based monitoring, alongside single substance chemical monitoring. Effect-based methods (EBMs) are able to measure total biological activities (e.g., estrogenic activity or cyxlooxygenase [COX]-inhibition) of specific group of substances (such as estrogens and NSAIDs) in the aquatic environment at low concentrations (pg/L). This makes them potential tools for a cost-effective and ecotoxicologically comprehensive water quality assessment. In parallel, the use of such methods could build a bridge from chemical status assessments towards ecological status assessments by adressing mixture effects for relevant modes of action. Our study aimed to assess the suitability of implementing EBMs in the WFD, by conducting a large-scale sampling and analysis campaign of more than 70 surface waters across Europe. This resulted in the generation of high-quality chemical and effect-based monitoring data for the selected Watch List substances. Overall, water samples contained low estrogenicity (0.01-1.3 ng E2-Equivalent/L) and a range of COX-inhibition activity similar to previously reported levels (12-1600 ng Diclofenac-Equivalent/L). Comparison between effect-based and conventional analytical chemical methods showed that the chemical analytical approach for steroidal estrogens resulted in more (76%) non-quantifiable data, i.e., concentrations were below detection limits, compared to the EBMs (28%). These results demonstrate the excellent and sensitive screening capability of EBMs.
Collapse
Affiliation(s)
- Eszter Simon
- Swiss Centre for Applied Ecotoxicology, Dübendorf, Switzerland.
| | - Anja Duffek
- German Environment Agency (UBA), Berlin, Germany
| | - Cordula Stahl
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Germany
| | - Manfred Frey
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Germany
| | - Marco Scheurer
- TZW: DVGW-Technologiezentrum Wasser (German Water Centre), Karlsruhe, Germany
| | - Jochen Tuerk
- Institut für Energie- und Umwelttechnik e. V. (IUTA, Institute of Energy and Environmental Technology), Duisburg, Germany
| | - Linda Gehrmann
- Institut für Energie- und Umwelttechnik e. V. (IUTA, Institute of Energy and Environmental Technology), Duisburg, Germany
| | - Sarah Könemann
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Kees Swart
- BioDetection Systems B.V., Amsterdam, the Netherlands
| | - Peter Behnisch
- National Institute of Industrial Environment and Risks (INERIS), UMR-I 02 SEBIO, Verneuil-en-Halatte, France
| | - Daniel Olbrich
- Swiss Centre for Applied Ecotoxicology, Dübendorf, Switzerland
| | - Franҫois Brion
- State Secretariat for Economic Affairs (SECO), Labour Directorate Section Chemicals and Work, Bern, Switzerland
| | - Selim Aït-Aïssa
- State Secretariat for Economic Affairs (SECO), Labour Directorate Section Chemicals and Work, Bern, Switzerland
| | - Robert Pasanen-Kase
- State Secretariat for Economic Affairs (SECO), Labour Directorate Section Chemicals and Work, Bern, Switzerland
| | - Inge Werner
- Swiss Centre for Applied Ecotoxicology, Dübendorf, Switzerland
| | | |
Collapse
|
7
|
Frey M, Barrett M, De Carvalho D. Effect of a dynamic seat pan design on spine biomechanics, calf circumference and perceived pain during prolonged sitting. Appl Ergon 2021; 97:103546. [PMID: 34399370 DOI: 10.1016/j.apergo.2021.103546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 07/11/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
This study investigates the effects of a dynamic seat pan design on sitting biomechanics, perceived pain and seat movement compared to a control. Thirty male participants were recruited for two experimental sessions consisting of a 2-h sitting exposure (standardized typing task). Spine angles, back muscle activity, perceived pain and calf circumference were measured pre and post exposure. Sitting in the dynamic condition resulted in lower pain ratings (p = 0.031), decreased calf circumference (p < 0.001), lower average seat pressure (p < 0.001), and greater seat contact area (p = 0.003) compared to the control. Spine angles and low back EMG for all 6 muscles showed no significant differences between chair conditions. These results suggest this dynamic seat pan design is effective at decreasing several negative components associated with sitting for the occupant. Future work should examine the longer-term effects of dynamic office chair features in the field setting with a more generalizable population.
Collapse
Affiliation(s)
- M Frey
- Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada
| | - M Barrett
- Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada
| | - D De Carvalho
- Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada.
| |
Collapse
|
8
|
Fink H, de Barros Fernandes NM, Weissmann J, Frey M. Extraction With Sweat-Sebum Emulsion as a New Test Method for Leachables in Patch-Based Medical Devices, Illustrated by Assessment of Isobornylacrylate (IBOA) in Diabetes Products. J Diabetes Sci Technol 2021; 15:792-800. [PMID: 32115999 PMCID: PMC8258535 DOI: 10.1177/1932296820908656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The increasing offering of patch-based medical devices is accompanied by growing numbers of reported adverse skin reactions. Procedures for testing leachables according to ISO 10993 may not be optimal for lipophilic substances that can be mobilized on skin by sweat and sebum. We propose an improved extraction method for targeted analysis of leachables using low volumes of a sweat-sebum emulsion. The approach is illustrated by the analysis of isobornylacrylate (IBOA), a compound found in some devices and suspected for allergenic potential. METHOD Three patch-based products were tested: an implantable device for continuous glucose monitoring (CGM), an intermittently scanned CGM (isCGM) device, and a micro-insulin pump. Quantification of IBOA was performed by gas chromatography and allergenic potential of IBOA levels was assessed by the KeratinoSens cell assay. Different combinations were used for extraction solvent (isopropanol, 5% ethanol-water solution, and sweat-sebum emulsion), extraction volumes (complete immersion vs partial immersion in 2 mm of solvent), and extraction time (3, 5, and 14 days). RESULTS Isobornylacrylate was only found in the isCGM device. About 20 mg/L IBOA were eluted after 3 days in isopropanol but only about 1 mg/L in ethanol-water. Sweat-sebum emulsion dissolves IBOA better and gives a more stable solution than ethanol-water. Decomposition of IBOA solutions requires adjusted extraction timing or correction of results. In the sweat-sebum extract, IBOA levels were about 20 mg/L after 3 days and about 30 mg/L after 5 days, clearly above the threshold found in the KerationSens assay for keratinocyte activation (10 mg/L). CONCLUSION Extraction by low volumes of sweat-sebum emulsion can be a superior alternative for the targeted simulating-use assessment of leachables in patch-based medical devices.
Collapse
Affiliation(s)
- Herbert Fink
- Roche Diabetes Care GmbH, Mannheim, Germany
- Herbert Fink, Roche Diabetes Care GmbH, Sandhofer Str. 116, 68305 Mannheim, Baden-Württemberg, Germany.
| | | | | | - Manfred Frey
- Steinbeis Innovationszentrum für Zellkulturtechnik, Mannheim, Germany
| |
Collapse
|
9
|
Haidl P, Jany B, Geiseler J, Andreas S, Arzt M, Dreher M, Frey M, Hauck RW, Herth F, Hämäläinen N, Jehser T, Kenn K, Lamprecht B, Magnet F, Oldenburg O, Schenk P, Schucher B, Studnicka M, Voshaar T, Windisch W, Woehrle H, Worth H. [Guideline for Long-Term Oxygen Therapy - S2k-Guideline Published by the German Respiratory Society]. Pneumologie 2020; 74:813-841. [PMID: 33291162 DOI: 10.1055/a-1252-1492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Long-term oxygen therapy is of great importance both for reducing mortality and for improving performance in patients with chronic lung diseases. The prerequisites for Long-term oxygen therapy are adequate diagnostics and clearly defined indication. A causal distinction into chronic hypoxaemic and hypercapnic respiratory failure is reasonable, from which the differential indication for non-invasive ventilation results.The revised guideline covers the diagnostics and indication of chronic lung and heart diseases, the role of oxygen in terminal illness and gives a detailed description of available oxygen devices. The guideline is intended to help avoid undersupply, oversupply and false prescriptions. Furthermore, the chapter "Postacute Oxygen Therapy" discusses the procedure, relevant in everyday life, but not yet clearly defined, for prescribing oxygen therapy for the home at the end of an inpatient stay. Another important point, the correct prescription of mobile oxygen systems, is also presented in the guideline. This document is a revised version of the guideline for longterm oxygen therapy and replaces the version of 2008.
Collapse
Affiliation(s)
- P Haidl
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg
| | - B Jany
- Klinikum Würzburg Mitte (KWM), Klinik für Innere Medizin, Pneumologie und Beatmungsmedizin, Standort MissioKlinik, Würzburg
| | - J Geiseler
- Klinikum Vest, Medizinische Klinik IV: Pneumologie, Beatmungs- und Schlafmedizin, Marl
| | - S Andreas
- Lungenfachklinik Immenhausen, Universitätsmedizin Göttingen, Immenhausen
| | - M Arzt
- Universitätsklinikum Regensburg, Klinik und Poliklinik für Innere Medizin II, Regensburg
| | - M Dreher
- Universitätsklinikum Aachen, Klinik für Pneumologie und Internistische Intensivmedizin, Aachen
| | - M Frey
- Klinik Barmelweid, Rombach, Schweiz
| | - R W Hauck
- Klinikum Altötting, Klinik für Pneumologie, Beatmungs- und Schlafmedizin, Altötting
| | - F Herth
- Thoraxklinik, Abteilung für Pneumologie und Beatmungsmedizin, Universität Heidelberg, Heidelberg
| | | | - T Jehser
- Gemeinschaftskrankenhaus Havelhöhe, Palliativstation, Berlin
| | - K Kenn
- Philips Universität Marburg, Lehrstuhl für pneumologische Rehabilitation, Marburg
| | - B Lamprecht
- Kepler Universitätsklinikum, Med Campus III, Linz, Österreich
| | - F Magnet
- Lungenklinik, Kliniken der Stadt Köln gGmbH, Universität Witten-Herdecke, Fakultät für Gesundheit - Department für Humanmedizin, Köln
| | - O Oldenburg
- Clemenshospital, Klinik für Kardiologie, Münster
| | - P Schenk
- Landesklinikum Hochegg, Abteilung für Pulmologie, Grimmenstein, Österreich
| | - B Schucher
- LungenClinic Grosshansdorf, Großhansdorf
| | - M Studnicka
- Landeskrankenhaus Salzburg, Universitätsklinikum der PMU, Universitätsklinik für Pneumologie, Salzburg, Österreich
| | - T Voshaar
- Krankenhaus Bethanien Lungenzentrum, Medizinische Klinik III, Moers
| | - W Windisch
- Lungenklinik, Kliniken der Stadt Köln gGmbH, Universität Witten-Herdecke, Fakultät für Gesundheit - Department für Humanmedizin, Köln
| | | | - H Worth
- Facharztzentrum Fürth, Fürth
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Ruta B, Hechler S, Neuber N, Orsi D, Cristofolini L, Gross O, Bochtler B, Frey M, Kuball A, Riegler SS, Stolpe M, Evenson Z, Gutt C, Westermeier F, Busch R, Gallino I. Wave-Vector Dependence of the Dynamics in Supercooled Metallic Liquids. Phys Rev Lett 2020; 125:055701. [PMID: 32794848 DOI: 10.1103/physrevlett.125.055701] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
We present a detailed investigation of the wave-vector dependence of collective atomic motion in Au_{49}Cu_{26.9}Si_{16.3}Ag_{5.5}Pd_{2.3} and Pd_{42.5}Cu_{27}Ni_{9.5}P_{21} supercooled liquids close to the glass transition temperature. Using x-ray photon correlation spectroscopy in a previously uncovered spatial range of only a few interatomic distances, we show that the microscopic structural relaxation process mimics the structure and presents a marked slowing down at the main average interparticle distance. This behavior is accompanied by dramatic changes in the shape of the intermediate scattering functions, which suggest the presence of large dynamical heterogeneities at length scales corresponding to a few particle diameters. A ballisticlike mechanism of particle motion seems to govern the structural relaxation of the two systems in the highly viscous phase, likely associated with hopping of caged particles in agreement with theoretical studies.
Collapse
Affiliation(s)
- B Ruta
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble, France
| | - S Hechler
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - N Neuber
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - D Orsi
- Dipartimento di Scienze Matematiche Fisiche ed Informatiche, Università degli Studi di Parma, Parma, Italy
| | - L Cristofolini
- Dipartimento di Scienze Matematiche Fisiche ed Informatiche, Università degli Studi di Parma, Parma, Italy
| | - O Gross
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - B Bochtler
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - M Frey
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - A Kuball
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - S S Riegler
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - M Stolpe
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - Z Evenson
- Heinz Maier-Leibnitz Zentrum (MLZ) and Physik Department, Technische Universität München, Lichtenbergstrasse 1, 85748 Garching, Germany
| | - C Gutt
- Department Physik, Universität Siegen, D-57072 Siegen, Germany
| | - F Westermeier
- Deutsches Elektronen Synchrotron DESY, D-22607 Hamburg, Germany
| | - R Busch
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| | - I Gallino
- Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C6.3, 66123 Saarbrücken, Germany
| |
Collapse
|
11
|
Bartko PE, Arfsten H, Frey M, Heitzinger G, Pavo N, Cho ANNA, Neuhold S, Tan T, Strunk G, Hengstenberg C, Huelsmann M, Goliasch G. 5937Natural history of functional tricuspid regurgitation: implications of quantitative doppler assessment. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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
Objectives
To establish the prognostic value of quantitative measures of functional tricuspid regurgitation (TR) severity i.e. effective regurgitant orifice area (EROA) and regurgitant volume.
Methods
382 patients with HFrEF on guideline-directed medical therapy were enrolled and TR EROA as well as regurgitant volume by Doppler/2D-echocardiography were assessed. All-cause mortality was defined as the primary study endpoint.
Results
Quantitative metrics of TR severity were consistently associated with mortality with a HR of 1.27 (95% CI 1.13–1.42, P<0.001) for the EROA and of 1.29 (95% CI 1.14–1.45, P<0.001) for the regurgitant volume (Figure 1, Panels A and B). Results remained unchanged after bootstrap- or clinical confounder-based adjustment. A spline curve pattern illustrates the association with mortality with thresholds for the EROA≥0.2cm2, and the regurgitant volume≥20ml with sustained excess mortality thereafter (Figure 1 Panels C-D).
Figure 1. Panels A–D
Conclusions
This large-scale study demonstrates the prognostic value of quantitative measures of TR severity in HFrEF. Thresholds for EROA and TR regurgitant volume associated with mortality fall within current ranges defining non-severe TR. This may potentially impact therapeutic decision making particularly timing of intervention.
Collapse
Affiliation(s)
- P E Bartko
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - H Arfsten
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - M Frey
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - G Heitzinger
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - N Pavo
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - A N N A Cho
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - S Neuhold
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - T Tan
- Westmead Hospital, Cardiology, Sydney, Australia
| | - G Strunk
- Research Institute for Complex Systems - Complexity-Research, Vienna, Austria
| | - C Hengstenberg
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - M Huelsmann
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| | - G Goliasch
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
| |
Collapse
|
12
|
Frey M, Schneider L, Masania K, Keplinger T, Burgert I. Delignified Wood-Polymer Interpenetrating Composites Exceeding the Rule of Mixtures. ACS Appl Mater Interfaces 2019; 11:35305-35311. [PMID: 31454224 DOI: 10.1021/acsami.9b11105] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Wood is increasingly considered in sustainable structural materials development due to its hierarchical structure, including an oriented reinforcing cellulose phase combined with carbon capturing and renewability. Top-down manufacturing techniques can provide direct access to this hierarchical cellulose scaffold for use in new functional materials. For high-performance load-bearing wood-based materials, the volume content of the reinforcing phase needs to be increased to much higher fiber volume contents (FVCs). This has been achieved by structure-retaining delignification followed by densification. The obtained matrix-free materials possess high tensile stiffness due to preservation of hierarchical fiber alignment; however, they demonstrate low mechanical properties in bending and cannot be used in moist conditions due to their propensity for water absorption. In order to address these two challenges, an interpenetrating wood polymer phase composite is developed using a delignified wood scaffold as a continuous reinforcing phase and epoxy resin as the interconnected matrix phase. We utilize the continuous flow channels in delignified wood for vacuum-assisted matrix infiltration in a condition of open continuous porosity in the wood scaffold. Prior to matrix curing, the material is densified in order to increase the FVC, decrease porosity, and reduce density variations in the wood scaffold. Due to the compressibility of delignified cellulose fibers, interpenetrating phase composites (IPCs) with very high FVCs of up to 80% could be produced, leading to exceptionally high tensile stiffness and strength of up to 70 GPa and 600 MPa. The obtained stiffness values far exceed the upper limit of the rule of mixtures due to an enhanced stress transfer through mechanically interlocked fiber-fiber interfaces combined with the stiffness providing matrix phase that further aids stress transfer between neighboring wood cells via their pits. This new approach paves the way for an efficient production of high-performance sustainable materials that can be used as alternative for glass fiber reinforced composites or natural fiber composites.
Collapse
Affiliation(s)
- M Frey
- WoodTec Group, Cellulose & Wood Materials , EMPA , CH-8600 , Dübendorf , Switzerland
| | - L Schneider
- WoodTec Group, Cellulose & Wood Materials , EMPA , CH-8600 , Dübendorf , Switzerland
| | | | - T Keplinger
- WoodTec Group, Cellulose & Wood Materials , EMPA , CH-8600 , Dübendorf , Switzerland
| | - I Burgert
- WoodTec Group, Cellulose & Wood Materials , EMPA , CH-8600 , Dübendorf , Switzerland
| |
Collapse
|
13
|
Safra T, Waissengrin B, Gerber D, Bernstein-Molcho R, Shaizaf R, Taff J, Mugia F, Frey M. Preventive bilateral mastectomy (PBS) in BRCA mutation carriers with ovarian cancer: Is it justified? Ann Oncol 2019. [DOI: 10.1093/annonc/mdz101.002] [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
|
14
|
Rowland M, Freeman A, Vesely S, Frey M, Liu A, Crim A, Lester J, Zantow E, Blank S, Powell B, Cass I, Moore K. Optimizing Second Line Chemotherapy in Germline BRCA Positive Patients with Platinum Sensitive Recurrent Ovarian Cancer. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.07.108] [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: 10/18/2022]
|
15
|
Liu A, Rowland M, Vesely S, Powell B, Freeman J, Blank S, Frey M, Gillen J, Moore K, Cass I. Impact of Intra-peritoneal Chemotherapy and Bevacizumab in Front Line Chemotherapy for Ovarian Cancer Among gBRCA and wtBRCA Patients: A Multi-Institutional, Frequency Matched, Case Control Study. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.07.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
Gerges M, Gerges C, Publig M, Skoro-Sajer N, Bonderman D, Frey M, Schwarzinger I, Lechner K, Seidl V, Alimohammadi A, Winter M, Humenberger M, Eichelberger B, Panzer S, Lang I. P5367Chronic inflammation after splenectomy is a risk factor for increased thrombotic cardiovascular events. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
17
|
Nasioudis D, Alevizakos M, Frey M, Chapman-Davis E, Caputo T, Holcomb M, Witkin S. Undifferentiated carcinoma of the ovary: Epidemiology and prognosis of a rare tumor. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
18
|
Ellis A, Shyne S, Frey M, Blank S. Bridging the gap: A priorities assessment tool to support shared decision making, maximize limited appointment time and increase patient satisfaction. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
19
|
Bernhard K, Stahl C, Martens R, Köhler HR, Triebskorn R, Scheurer M, Frey M. Two novel real time cell-based assays quantify beta-blocker and NSAID specific effects in effluents of municipal wastewater treatment plants. Water Res 2017; 115:74-83. [PMID: 28259816 DOI: 10.1016/j.watres.2017.02.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/06/2017] [Accepted: 02/16/2017] [Indexed: 06/06/2023]
Abstract
Pharmaceuticals, such as beta-blockers, nonsteroidal anti-inflammatory drugs (NSAIDs) as well as their metabolites are introduced into the water cycle via municipal wastewater treatment plant (WWTP) effluents in all industrialized countries. As the amino acid sequences of the biological target molecules of these pharmaceuticals - the beta-1 adrenergic receptor for beta-blockers and the cyclooxygenase for NSAIDs - are phylogenetically conserved among vertebrates it is reasonable that wildlife vertebrates including fish physiologically respond in a similar way to them as documented in humans. Consequently, beta-blockers and NSAIDs both exhibit their effects according to their mode of action on one hand, but on the other hand that may lead to unwanted side effects in non-target species. To determine whether residuals of beta-1 adrenergic receptor antagonists and cyclooxygenase inhibitors may pose a risk to aquatic organisms, one has to know the extent to which such organisms respond to the total of active compounds, their metabolites and transformation products with the same modes of action. To cope with this demand, two cell-based assays were developed, by which the total beta-blocker and cyclooxygenase inhibitory activity can be assessed in a given wastewater or surface water extract in real time. The measured activity is quantified as metoprolol equivalents (MetEQ) of the lead substance metoprolol in the beta-blocker assay, and diclofenac equivalents (DicEQ) in the NSAID assay. Even though MetEQs and DicEQs were found to surpass the concentration of the respective lead substances (metoprolol, diclofenac), as determined by chemical analysis by a factor of two to three, this difference was shown to be reasonably explained by the presence and action of additional active compounds with the same mode of action in the test samples. Thus, both in vitro assays were proven to integrate effectively over beta-blocker and NSAID activities in WWTP effluents in a very sensitive and extremely rapid manner.
Collapse
Affiliation(s)
- Kevin Bernhard
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Paul-Wittsack-Str. 10, D-68163 Mannheim, Germany
| | - Cordula Stahl
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Paul-Wittsack-Str. 10, D-68163 Mannheim, Germany
| | - Regina Martens
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Paul-Wittsack-Str. 10, D-68163 Mannheim, Germany
| | - Heinz-R Köhler
- University of Tübingen, Animal Physiological Ecology, Auf der Morgenstelle 5, D-72072 Tübingen, Germany
| | - Rita Triebskorn
- University of Tübingen, Animal Physiological Ecology, Auf der Morgenstelle 5, D-72072 Tübingen, Germany; Steinbeis Transfer Centre for Ecotoxicology and Ecophysiology, Blumenstr. 13, D-72108 Rottenburg, Germany
| | - Marco Scheurer
- TZW: DVGW - Technologiezentrum Wasser, Karlsruher Straße 84, D-76139 Karlsruhe, Germany
| | - Manfred Frey
- Steinbeis-Innovationszentrum Zellkulturtechnik, c/o University of Applied Sciences Mannheim, Paul-Wittsack-Str. 10, D-68163 Mannheim, Germany.
| |
Collapse
|
20
|
Biester T, Aschemeier B, Fath M, Frey M, Scheerer M, Kordonouri O, Danne T. Die Wirkung von Dapagliflozin auf Insulinbedarf, Glukoseausscheidung und β-Hydroxybutyratspiegel steht bei Jugendlichen und jungen Erwachsenen mit Typ-1-Diabetes in keinem Zusammenhang mit dem HbA1c-Ausgangswert. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601691] [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: 10/19/2022]
Affiliation(s)
- T Biester
- Kinder- und Jugendkrankenhaus 'Auf der Bult', Hannover, Germany
| | - B Aschemeier
- Kinder- und Jugendkrankenhaus 'Auf der Bult', Hannover, Germany
| | - M Fath
- Kinder- und Jugendkrankenhaus 'Auf der Bult', Hannover, Germany
| | - M Frey
- Alcedis GmbH, Gießen, Germany
| | | | - O Kordonouri
- Kinder- und Jugendkrankenhaus 'Auf der Bult', Hannover, Germany
| | - T Danne
- Kinder- und Jugendkrankenhaus 'Auf der Bult', Hannover, Germany
| |
Collapse
|
21
|
Clarenbach C, Sievi N, Brack T, Brutsche M, Frey M, Irani S, Leuppi J, Thurnheer R, Kohler M. P147 Is a questionnaire suitable to assess physical activity and its changes in COPD? Chest 2017. [DOI: 10.1016/j.chest.2017.04.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
22
|
Banks CA, Jowett N, Azizzadeh B, Beurskens C, Bhama P, Borschel G, Coombs C, Coulson S, Croxon G, Diels J, Fattah A, Frey M, Gavilan J, Henstrom D, Hohman M, Kim J, Marres H, Redett R, Snyder-Warwick A, Hadlock T. Worldwide Testing of the eFACE Facial Nerve Clinician-Graded Scale. Plast Reconstr Surg 2017; 139:491e-498e. [DOI: 10.1097/prs.0000000000002954] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
23
|
Danker T, Frey M, Guenther E. Inducible CaV1.2 cell line optimized for automated patch clamp assays. J Pharmacol Toxicol Methods 2016. [DOI: 10.1016/j.vascn.2016.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
24
|
Kamolz LP, Beck H, Haslik W, Högler R, Rab M, Schrögendorfer KF, Frey M. Carpal Tunnel Syndrome: A Question of Hand and Wrist Configurations? ACTA ACUST UNITED AC 2016; 29:321-4. [PMID: 15234493 DOI: 10.1016/j.jhsb.2003.09.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2003] [Accepted: 08/27/2003] [Indexed: 11/17/2022]
Abstract
This study investigated whether there is an association between hand and wrist configurations and the occurrence of carpal tunnel syndrome. The external hand and wrist dimensions of 50 subjects with carpal tunnel syndrome and 50 healthy volunteers were measured and compared. In addition carpal tunnel depth and width were determined with ultrasound. Our results showed that the hand length was significantly higher in the control group (hand length, 19.0; SD, 1.0 cm: patients’ hand length, 18.2; SD, 1.1 cm) and the palm width was significantly greater in the patients’ group (palm width, 9.1; SD, 0.7 cm: controls palm width, 8.6; SD, 0.6 cm). Carpal tunnel syndrome patients had a squarer wrist (wrist ratio, 0.72; SD, 0.1) and carpal tunnel (carpal tunnel ratio, 0.48; SD, 0.1) than the controls (wrist ratio, 0.68; SD, 0.1; carpal tunnel ratio, 0.42; SD, 0.1). These findings indicate that the anatomy of the hand, wrist and carpal tunnel may predispose to carpal tunnel syndrome.
Collapse
Affiliation(s)
- L-P Kamolz
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Medical School, University of Vienna, Austria.
| | | | | | | | | | | | | |
Collapse
|
25
|
Halioua B, Cribier B, Frey M, Tan J. Feelings of stigmatization in patients with rosacea. J Eur Acad Dermatol Venereol 2016; 31:163-168. [PMID: 27323701 DOI: 10.1111/jdv.13748] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/30/2016] [Indexed: 12/01/2022]
Abstract
BACKGROUND Rosacea is a chronic facial disease that may lead to feelings of stigmatization, which can negatively impact psychological and social well-being. OBJECTIVE The aim of this study was to evaluate different aspects of rosacea that could contribute to feelings of stigmatization. METHODS An online survey of a representative sample of the adult population in the UK, France, Germany and US was conducted to identify patients with rosacea based on presence of three or more clinical features. RESULTS Among the patients who completed the survey (n = 807), mean age at first sign/symptom of rosacea was 31.3 ± 14.5 years; mean duration of disease was 102 ± 119 months. One-third of patients reported feelings of stigmatization (FS; n = 275). Male patients were more likely to experience FS (49% vs. 37.2% in non-FS population; P = 0.0037). Those with FS were more likely to avoid social situations (54.2% vs. 2.0%, P < 1.00E-10 ) and had a higher rate of depression (36.7% vs. 21.1%, P < 1.00E-10 ). CONCLUSIONS Stigmatization is important in the daily lives of those with rosacea and should be taken into consideration in the management of these patients.
Collapse
Affiliation(s)
- B Halioua
- Institut Alfred Fournier, Paris, France
| | - B Cribier
- Clinique Dermatologique, Université de Strasbourg et Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - M Frey
- Department of Psychology, University of Windsor, Windsor, ON, Canada
| | - J Tan
- University of Western Ontario and Windsor Clinical Research Inc, Windsor, ON, Canada
| |
Collapse
|
26
|
Biester T, Fath M, Gottwald I, Remus K, Aschemeier B, Frey M, Scheerer MF, Kordonouri O, Danne T. Gute Verträglichkeit des SGLT2-Inhibitors Dapagliflozin bei Patienten mit Typ 1 Diabetes: Vorläufige Ergebnisse einer Phase-1-Studie. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
27
|
Placheta E, Wood MD, Lafontaine C, Frey M, Gordon T, Borschel GH. Macroscopic in vivo imaging of facial nerve regeneration in Thy1-GFP rats. JAMA FACIAL PLAST SU 2015; 17:8-15. [PMID: 25317544 DOI: 10.1001/jamafacial.2014.617] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
IMPORTANCE Facial nerve injury leads to severe functional and aesthetic deficits. The transgenic Thy1-GFP rat is a new model for facial nerve injury and reconstruction research that will help improve clinical outcomes through translational facial nerve injury research. OBJECTIVE To determine whether serial in vivo imaging of nerve regeneration in the transgenic rat model is possible, facial nerve regeneration was imaged under the main paradigms of facial nerve injury and reconstruction. DESIGN, SETTING, AND PARTICIPANTS Fifteen male Thy1-GFP rats, which express green fluorescent protein (GFP) in their neural structures, were divided into 3 groups in the laboratory: crush-injury, direct repair, and cross-face nerve grafting (30-mm graft length). The distal nerve stump or nerve graft was predegenerated for 2 weeks. The facial nerve of the transgenic rats was serially imaged at the time of operation and after 2, 4, and 8 weeks of regeneration. The imaging was performed under a GFP-MDS-96/BN excitation stand (BLS Ltd). INTERVENTION OR EXPOSURE Facial nerve injury. MAIN OUTCOME AND MEASURE Optical fluorescence of regenerating facial nerve axons. RESULTS Serial in vivo imaging of the regeneration of GFP-positive axons in the Thy1-GFP rat model is possible. All animals survived the short imaging procedures well, and nerve regeneration was followed over clinically relevant distances. The predegeneration of the distal nerve stump or the cross-face nerve graft was, however, necessary to image the regeneration front at early time points. Crush injury was not suitable to sufficiently predegenerate the nerve (and to allow for degradation of the GFP through Wallerian degeneration). After direct repair, axons regenerated over the coaptation site in between 2 and 4 weeks. The GFP-positive nerve fibers reached the distal end of the 30-mm-long cross-face nervegrafts after 4 to 8 weeks of regeneration. CONCLUSIONS AND RELEVANCE The time course of facial nerve regeneration was studied by serial in vivo imaging in the transgenic rat model. Nerve regeneration was followed over clinically relevant distances in a small number of experimental animals, as they were subsequently imaged at multiple time points. The Thy1-GFP rat model will help improve clinical outcomes of facial reanimation surgery through improving the knowledge of facial nerve regeneration after surgical procedures. LEVEL OF EVIDENCE NA.
Collapse
Affiliation(s)
- Eva Placheta
- Division of Plastic and Reconstructive Surgery, Medical University of Vienna, Vienna, Austria
| | - Matthew D Wood
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Christine Lafontaine
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Manfred Frey
- Division of Plastic and Reconstructive Surgery, Medical University of Vienna, Vienna, Austria
| | - Tessa Gordon
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Gregory H Borschel
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada3Department of Surgery, University of Toronto, Toronto, Ontario, Canada4Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada5I
| |
Collapse
|
28
|
Triebskorn R, Berg K, Ebert I, Frey M, Jungmann D, Oehlmann J, Oetken M, Sacher F, Scheurer M, Schmieg H, Schwarz S, Köhler HR. Monitoring primary effects of pharmaceuticals in the aquatic environment with mode of action-specific in vitro biotests. Environ Sci Technol 2015; 49:2594-2595. [PMID: 25680003 DOI: 10.1021/acs.est.5b00162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Rita Triebskorn
- Animal Physiological Ecology, University of Tübingen , Auf der Morgenstelle 5, D-72076 Tübingen, Germany
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Schönmann M, Sievi NA, Clarenbach CF, Brack T, Brutsche M, Frey M, Irani S, Leuppi JD, Ruediger J, Senn O, Thurnheer R, Kohler M. Physical Activity and the Frequency of Acute Exacerbations in Patients with Chronic Obstructive Pulmonary Disease. Lung 2014; 193:63-70. [DOI: 10.1007/s00408-014-9673-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 12/06/2014] [Indexed: 11/30/2022]
|
30
|
Placheta E, Hendry JM, Wood MD, Lafontaine CW, Liu EH, Cecilia Alvarez Veronesi M, Frey M, Gordon T, Borschel GH. The ErbB2 inhibitor Herceptin (Trastuzumab) promotes axonal outgrowth four weeks after acute nerve transection and repair. Neurosci Lett 2014; 582:81-6. [PMID: 25220708 DOI: 10.1016/j.neulet.2014.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Revised: 08/28/2014] [Accepted: 09/01/2014] [Indexed: 12/30/2022]
Abstract
Accumulating evidence suggests that neuregulin, a potent Schwann cell mitogen, and its receptor, ErbB2, have an important role in regulating peripheral nerve regeneration. We hypothesized that Herceptin (Trastuzumab), a monoclonal antibody that binds ErbB2, would disrupt ErbB2 signaling, allowing us to evaluate ErbB2's importance in peripheral nerve regeneration. In this study, the extent of peripheral motor and sensory nerve regeneration and distal axonal outgrowth was analyzed two and four weeks after common peroneal (CP) nerve injury in rats. Outcomes analyzed included neuron counts after retrograde labeling, histomorphometry, and protein analysis. The data analysis revealed that there was no impact of Herceptin administration on either the numbers of motor or sensory neurons that regenerated their axons but histomorphometry revealed that Herceptin significantly increased the number of regenerated axons in the distal repaired nerve after 4 weeks. Protein analysis with Western blotting revealed no difference in either expression levels of ErbB2 or the amount of activated, phosphorylated ErbB2 in injured nerves. In conclusion, administration of the ErbB2 receptor inhibitor after nerve transection and surgical repair did not alter the number of regenerating neurons but markedly increased the number of regenerated axons per neuron in the distal nerve stump. Enhanced axon outgrowth in the presence of this ErbB2 inhibitor indicates that ErbB2 signaling may limit the numbers of axons that are emitted from each regenerating neuron.
Collapse
Affiliation(s)
- Eva Placheta
- Division of Plastic and Reconstructive Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - J Michael Hendry
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada; Department of Surgery, University of Toronto, 149 College Street, 5th Floor, Toronto, ON M5T 1P5, Canada; Institute of Medical Science, University of Toronto, 1 King's College Circle, Room 2374, Toronto, ON M5S 1A8, Canada
| | - Matthew D Wood
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - Christine W Lafontaine
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - Edward H Liu
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - M Cecilia Alvarez Veronesi
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Rosebrugh Building, RM 407 164 College Street, Toronto, ON M5S 3G9, Canada
| | - Manfred Frey
- Division of Plastic and Reconstructive Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Tessa Gordon
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - Gregory H Borschel
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada; Department of Surgery, University of Toronto, 149 College Street, 5th Floor, Toronto, ON M5T 1P5, Canada; Institute of Medical Science, University of Toronto, 1 King's College Circle, Room 2374, Toronto, ON M5S 1A8, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Rosebrugh Building, RM 407 164 College Street, Toronto, ON M5S 3G9, Canada.
| |
Collapse
|
31
|
Nalbach P, Achner AJA, Frey M, Grosser M, Bressler C, Thorwart M. Hydration shell effects in the relaxation dynamics of photoexcited Fe-II complexes in water. J Chem Phys 2014; 141:044304. [DOI: 10.1063/1.4890528] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
32
|
|
33
|
Tzou CHJ, Artner NM, Pona I, Hold A, Placheta E, Kropatsch WG, Frey M. Comparison of three-dimensional surface-imaging systems. J Plast Reconstr Aesthet Surg 2014; 67:489-97. [PMID: 24529695 DOI: 10.1016/j.bjps.2014.01.003] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [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: 10/24/2012] [Revised: 11/01/2013] [Accepted: 01/03/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND In recent decades, three-dimensional (3D) surface-imaging technologies have gained popularity worldwide, but because most published articles that mention them are technical, clinicians often have difficulties gaining a proper understanding of them. This article aims to provide the reader with relevant information on 3D surface-imaging systems. In it, we compare the most recent technologies to reveal their differences. METHODS We have accessed five international companies with the latest technologies in 3D surface-imaging systems: 3dMD, Axisthree, Canfield, Crisalix and Dimensional Imaging (Di3D; in alphabetical order). We evaluated their technical equipment, independent validation studies and corporate backgrounds. RESULTS The fastest capturing devices are the 3dMD and Di3D systems, capable of capturing images within 1.5 and 1 ms, respectively. All companies provide software for tissue modifications. Additionally, 3dMD, Canfield and Di3D can fuse computed tomography (CT)/cone-beam computed tomography (CBCT) images into their 3D surface-imaging data. 3dMD and Di3D provide 4D capture systems, which allow capturing the movement of a 3D surface over time. Crisalix greatly differs from the other four systems as it is purely web based and realised via cloud computing. CONCLUSION 3D surface-imaging systems are becoming important in today's plastic surgical set-ups, taking surgeons to a new level of communication with patients, surgical planning and outcome evaluation. Technologies used in 3D surface-imaging systems and their intended field of application vary within the companies evaluated. Potential users should define their requirements and assignment of 3D surface-imaging systems in their clinical as research environment before making the final decision for purchase.
Collapse
Affiliation(s)
- Chieh-Han John Tzou
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria.
| | - Nicole M Artner
- Institute of Computer Graphics and Algorithms, Pattern Recognition and Image Processing Group, Vienna University of Technology, Vienna, Austria
| | - Igor Pona
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria
| | - Alina Hold
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria
| | - Eva Placheta
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria
| | - Walter G Kropatsch
- Institute of Computer Graphics and Algorithms, Pattern Recognition and Image Processing Group, Vienna University of Technology, Vienna, Austria
| | - Manfred Frey
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria
| |
Collapse
|
34
|
Alvarez-Gonzalez R, Mendoza-Alvarez H, Frey M, Zentgraf H. Up-regulation of two distinct p53-DNA binding functions by covalent poly(ADP-ribosyl)ation: transactivating and single strand break sensing. Cancer Invest 2013; 31:563-70. [PMID: 24164297 DOI: 10.3109/07357907.2013.845670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We used a [(32)P] p53 sequence-specific oligodeoxynucleotide and Electrophoretic-Mobility-Shift-Assays to monitor p53 DNA sequence-specific binding with p53-R267W, a nonbinding point mutant; and p53-Δ30, a deletion-mutant which lacks the carboxy-terminus that recognizes DNA-strand-breaks. Recombinant p53 and poly(ADP-ribose)polymerase-1 (PARP-1) were incubated with labeled βNAD(+) with/without DNA. The poly(ADP-ribosyl)ation of each protein increased with incubation-time and βNAD(+) and p53 concentration(s). Since p53-Δ30 was efficiently labeled, poly(ADP-ribosyl)ation target site(s) of wt-p53 must reside outside its carboxy-terminal-domain. The poly(ADP-ribosyl)ation of p53-Δ30 did not diminish its DNA binding; Instead, it enhanced DNA-sequence-specific-binding. Therefore, we conclude that DNA-sequence-specific-binding and DNA-nick-sensing of mutant-p53 are differentially regulated by poly(ADP-ribosyl)ation.
Collapse
|
35
|
Bauer S, Wittkamp H, Schildmann S, Frey M, Hiller W, Hecksher T, Olsen NB, Gainaru C, Böhmer R. Broadband dynamics in neat 4-methyl-3-heptanol and in mixtures with 2-ethyl-1-hexanol. J Chem Phys 2013; 139:134503. [DOI: 10.1063/1.4821229] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
36
|
Affiliation(s)
- M Frey
- Fakultät für Physik, Technische Universität Dortmund , 44221 Dortmund, Germany
| | | | | | | |
Collapse
|
37
|
Teschner D, Distler E, Wehler D, Frey M, Marandiuc D, Langeveld K, Theobald M, Thomas S, Herr W. Depletion of naive T cells using clinical grade magnetic CD45RA beads: a new approach for GVHD prophylaxis. Bone Marrow Transplant 2013; 49:138-44. [PMID: 23933765 DOI: 10.1038/bmt.2013.114] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 06/25/2013] [Indexed: 01/18/2023]
Abstract
Depletion of naive T cells from donor leukapheresis products (LPs) aims at the reduction of alloreactivity, while preserving memory T-cell reactivity (for example, to pathogens). This study established the immunomagnetic depletion procedure under clean room conditions using CD45RA beads and analyzed LPs of six donors for cell composition and functional immune responses. CD45RA depletion resulted in 3.4-4.7 log (median 4.4) reduction of CD45RA(+) T cells, thereby eliminating naive and late effector T cells. B cells were also completely removed, whereas significant proportions of NK cells, monocytes and granulocytes persisted. CD45RA-depleted LPs contained effector and central memory CD4(+) and CD8(+) T cells that showed sustained IFN-γ secretion to CMV, EBV, Aspergillus and Candida Ags. Alloreactivity was measured in MLRs between donors with complete HLA-mismatch. Alloreactive CD8(+) T cells were strongly reduced (median >1-log) upon CD45RA depletion, whereas alloreactive CD4(+) T cells persisted in significant numbers. In conclusion, clinical grade depletion of CD45RA(+) naive T cells from donor LPs is feasible and highly efficient. The depleted products show sustained CD4(+) and CD8(+) T-cell reactivity to pathogens and effectively reduced CD8-mediated alloreactivity. Prophylactic and preemptive infusions after allogeneic SCT may improve T-cell reconstitution and pathogen-specific immunosurveillance, along with lower risk of inducing GVHD.
Collapse
Affiliation(s)
- D Teschner
- Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - E Distler
- Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - D Wehler
- Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - M Frey
- Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - D Marandiuc
- Transfusion Center, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - K Langeveld
- Miltenyi Biotec GmbH, Bergisch Gladbach, Germany
| | - M Theobald
- Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - S Thomas
- Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany
| | - W Herr
- 1] Third Department of Medicine-Hematology, Oncology, Pneumology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany [2] Department of Internal Medicine III-Hematology and Oncology, University Medical Center of Regensburg, Regensburg, Germany
| |
Collapse
|
38
|
Aszmann OC, Winkler T, Korak K, Lassmann H, Frey M. The influence of GDNF on the timecourse and extent of motoneuron loss in the cervical spinal cord after brachial plexus injury in the neonate. Neurol Res 2013; 26:211-7. [PMID: 15072641 DOI: 10.1179/016164104225013789] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 10/31/2022]
Abstract
Injuries of the peripheral nerve in the early post-natal period are known to cause massive loss in the motoneuron pools of the spinal cord. However, the exact time frame and extent of motoneuron death in the cervical spinal cord after a brachial plexus lesion and the altered course after neuroprotection with different trophic factors is not known. In the present study, the time course of induced motoneuron death after a neonatal peripheral nerve injury and the effect of GDNF was investigated over a 4 week time period to determine the window of opportunity for possible therapeutic interventions in obstetrical plexus palsy. The brachial plexus of a total of 70 animals was explored within 12 hours after birth and divided at trunc level. The plexus was then labeled with a fluorescent tracer to identify the corresponding motoneuron pool. Two groups were prepared: Group I remained untreated to assess the natural course of induced neuronal death. Group II received GDNF immediately after the lesion. Post-operatively the animals were evaluated sequentially over 29 days. Surviving motoneurons were evaluated quantitatively counting the nucleoli. The entire brachial plexus of the rat is supplied by a total of about 4000 motoneurons. After injury the number of motoneurons steadily diminished within the first 10 days to reach a plateau of about 20% of the original number. At this time the GDNF treated group still had 85% (3330 +/- 247) of motoneurons viable. This further decreased so that at the termination of the experiment at day 29 there were still 2527 +/- 285 motoneurons alive. This study clearly shows that pathology after a brachial plexus injury in the newborn is not restricted to the peripheral nerve alone. In this model 64% of motoneurons underwent apoptosis within the first week after injury, reaching a plateau after 10 days at 20%. GDNF successfully rescued motoneurons so that after 4 weeks still 65% were present. We conclude that GDNF leads to enhanced motoneuron survival so that exogenous trophic support of motoneurons might have a role in the treatment of all types of severe neonatal plexopathies, maintaining the viability of motoneurons until reconstructive surgery provides them with a pathway for regeneration and endogenous trophic support.
Collapse
Affiliation(s)
- Oskar C Aszmann
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University Clinics of Vienna School of Medicine, Waehringer Guertel 18-20, 1090 Vienna, Austria.
| | | | | | | | | |
Collapse
|
39
|
Frey M, Kramer J, Caputo T, Gunnala V, Holcomb K, Tsatsas M, Gupta D. Risk-reducing salpingectomy at the time of benign hysterectomy and permanent sterilization: A survey of obstetricians/gynecologists. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
40
|
Veronesi MCA, Placheta E, Lafontaine CA, Liu E, Wood MD, Gordon T, Frey M, Borschel GH. Abstract 71. Plast Reconstr Surg 2013. [DOI: 10.1097/01.prs.0000430013.90710.f1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Häfner N, Nicolaus K, Weiss S, Frey M, Diebolder H, Rengsberger M, Dürst M, Runnebaum IB. p53-autoantibody may be more sensitive than CA-125 in monitoring microscopic and macroscopic residual disease after primary therapy for epithelial ovarian cancer. J Cancer Res Clin Oncol 2013; 139:1207-10. [PMID: 23576021 DOI: 10.1007/s00432-013-1432-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 02/12/2013] [Indexed: 10/27/2022]
Abstract
PURPOSE To evaluate the use of p53-autoantibodies (p53-aab) for monitoring minimal disease after standard therapy of advanced epithelial ovarian cancer (EOC). METHODS Retrospective analysis of p53-aab in preoperative and long-term follow-up serum samples from 10 patients selected for representing three relevant EOC subgroups: platinum-sensitive disease after macroscopic complete debulking (n = 4) and platinum-sensitive (n = 3) or platinum-resistant disease (n = 3), both after suboptimal debulking with residual tumor of <1 cm diameter. p53-aab levels were quantified by a sandwich ELISA in two independent experiments. CA-125 values of all samples and clinical information were retrieved from medical records. RESULTS Patients with early relapse (median PFS 7 months, n = 8) had high p53-aab levels throughout follow-up while CA-125 values had dropped below the cut-off after primary surgery during or after chemotherapy in these cases. Patients with seroconversion to p53-aab negativity experienced prolonged PFS (n = 2; #1: 50 months, #2: no evidence of disease for 36 months until last follow-up). Continued p53-aab positivity was not related to the resection status or platinum sensitivity. CONCLUSIONS p53-autoantibodies may be a highly sensitive marker for minimal residual tumor mass after surgery and/or chemotherapy rather than standard CA-125, possibly due to the different nature of these markers. CA-125 released by cancer cells is related to tumor mass, whereas p53-aab levels can indicate the presence of few tumor cells due to amplification by the immune system. Seroconversion of p53-aab could be associated with long-term survival.
Collapse
Affiliation(s)
- Norman Häfner
- Department of Gynecology and Obstetrics, Jena University Hospital, Bachstrasse 18, 07743 Jena, Germany
| | | | | | | | | | | | | | | |
Collapse
|
42
|
Russi EW, Karrer W, Brutsche M, Eich C, Fitting JW, Frey M, Geiser T, Kuhn M, Nicod L, Quadri F, Rochat T, Steurer-Stey C, Stolz D. Diagnosis and management of chronic obstructive pulmonary disease: the Swiss guidelines. Official guidelines of the Swiss Respiratory Society. ACTA ACUST UNITED AC 2013; 85:160-74. [PMID: 23406723 DOI: 10.1159/000346025] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 11/21/2012] [Indexed: 02/05/2023]
Abstract
The new Swiss Chronic Obstructive Pulmonary Disease (COPD) Guidelines are based on a previous version, which was published 10 years ago. The Swiss Respiratory Society felt the need to update the previous document due to new knowledge and novel therapeutic developments about this prevalent and important disease. The recommendations and statements are based on the available literature, on other national guidelines and, in particular, on the GOLD (Global Initiative for Chronic Obstructive Lung Disease) report. Our aim is to advise pulmonary physicians, general practitioners and other health care workers on the early detection and diagnosis, prevention, best symptomatic control, and avoidance of COPD as well as its complications and deterioration.
Collapse
Affiliation(s)
- E W Russi
- Pulmonary Division, Department of Internal Medicine, University Hospital Zurich, Zurich, Switzerland.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Bader A, Brodarac A, Hetzer R, Kurtz A, Stamm C, Baraki H, Kensah G, Asch S, Rojas S, Martens A, Gruh I, Haverich A, Kutschka I, Cortes-Dericks L, Froment L, Kocher G, Schmid RA, Delyagina E, Schade A, Scharfenberg D, Skorska A, Lux C, Li W, Steinhoff G, Drey F, Lepperhof V, Neef K, Fatima A, Wittwer T, Wahlers T, Saric T, Choi YH, Fehrenbach D, Lehner A, Herrmann F, Hollweck T, Pfeifer S, Wintermantel E, Kozlik-Feldmann R, Hagl C, Akra B, Gyongyosi M, Zimmermann M, Pavo N, Mildner M, Lichtenauer M, Maurer G, Ankersmit J, Hacker S, Mittermayr R, Mildner M, Haider T, Nickl S, Zimmermann M, Beer L, Lebherz-Eichinger D, Schweiger T, Mitterbauer A, Keibl C, Werba G, Frey M, Ankersmit HJ, Herrmann S, Lux CA, Steinhoff G, Holfeld J, Tepekoylu C, Wang FS, Kozaryn R, Schaden W, Grimm M, Wang CJ, Holfeld J, Tepekoylu C, Kozaryn R, Urbschat A, Zacharowski K, Grimm M, Paulus P, Avaca MJ, Kempf H, Malan D, Sasse P, Fleischmann B, Palecek J, Drager G, Kirschning A, Zweigerdt R, Martin U, Katsirntaki K, Haller R, Ulrich S, Sgodda M, Puppe V, Duerr J, Schmiedl A, Ochs M, Cantz T, Mall M, Martin U, Mauritz C, Kensah G, Lara AR, Dahlmann J, Zweigerdt R, Schwanke K, Hegermann J, Skvorc D, Gawol A, Azizian A, Wagner S, Krause A, Drager G, Ochs M, Haverich A, Gruh I, Martin U, Klopsch C, Gaebel R, Kaminski A, Chichkov B, Jockenhoevel S, Steinhoff G, Klose K, Roy R, Brodarac A, Kang KS, Bieback K, Nasseri B, Choi YH, Kurtz A, Stamm C, Lepperhof V, Polchynska O, Kruttwig K, Bruggemann C, Xu G, Drey F, Neef K, Saric T, Lichtenauer M, Werba G, Mildner M, Baumgartner A, Hasun M, Nickl S, Beer L, Mitterbauer A, Zimmermann M, Gyongyosi M, Podesser BK, Ankersmit HJ, Ludwig M, Tolk A, Skorska A, Noack T, Steinhoff G, Margaryan R, Assanta N, Menciassi A, Burchielli S, Matteucci M, Lionetti V, Luchi C, Cariati E, Coceani F, Murzi B, Martens A, Rojas SV, Kensah G, Rotarmel A, Baraki H, Haverich A, Martin U, Gruh I, Kutschka I, Nasseri BA, Klose K, Ebell W, Dandel M, Kukucka M, Gebker R, Choi YH, Hetzer R, Stamm C, Paulus P, Holfeld J, Urbschat A, Mutlak H, Ockelmann P, Tacke S, Zacharowski K, Scheller B, Pereszlenyi A, Rojas SV, Martens A, Baraki H, Schwanke K, Zweigerdt R, Martin U, Haverich A, Kutschka I, Rojas SV, Martens A, Meier M, Baraki H, Schecker N, Rathert C, Zweigerdt R, Martin U, Haverich A, Kutschka I, Roy R, Brodarac A, Kukucka M, Kurtz A, Becher PM, Choi YH, Drori-Carmi N, Bercovich N, Zahavi-Goldstein E, Jack M, Netzer N, Pinzur L, Chajut A, Tschope C, Stamm C, Ruch U, Kaminski A, Strauer BE, Tiedemann G, Steinhoff G, Schade A, Delyagina E, Scharfenberg D, Lux C, Steinhoff G, Schlegel F, Dhein S, Akhavuz O, Mohr FW, Dohmen PM, Schlegel F, Salameh A, Oelmann K, Kiefer P, Dhein S, Mohr FW, Dohmen PM, Schwanke K, Merkert S, Templin C, Jara-Avaca M, Muller S, Haverich A, Martin U, Zweigerdt R, Skorska A, von Haehling S, Ludwig M, Slavic S, Curato C, Altarche-Xifro W, Unger T, Steinhoff G, Li J, Zhang Y, Li WZ, Ou L, Lux CA, Ma N, Steinhoff G, Haase A, Alt R, Schwanke K, Martin U. 3rd EACTS Meeting on Cardiac and Pulmonary Regeneration Berlin-Brandenburgische Akademie, Berlin, Germany, 14-15 December 2012. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivs561] [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
|
44
|
Montoro Lopez M, Iniesta Manjavacas A, De Torres Alba F, Lopez Fernandez T, De Celix MCGR, Gomez De Diego J, Ramirez U, Mesa J, Moreno Yanguela M, Lopez Sendon J, Shiina Y, Ernst S, Gatzoulis M, Li W, Cameli M, De Vito R, Di Giovanni A, Lisi M, Focardi M, Giacomin E, Bigio E, Mondillo S, Szymczyk E, Lipiec P, Michalski B, Szymczyk K, Rotkiewicz A, Wozniakowski B, Stefanczyk L, Kasprzak J, Luo X, Fang F, Lee AP, Lam Y, Sanderson JE, Kwong JS, Yu C, Nasis A, Moir S, Meredith I, Mottram P, Van Zalen J, Podd S, Raju P, Mcintosh R, Beale L, Brickley G, Sturridge L, Patel N, Lloyd G, Esteban Martinez F, Ariza Canete J, Casanova Martin M, Ciudad Caballero M, Trapiello Gonzalez L, Herrera Gutierrez N, Matei F, Beladan C, Popescu B, Calin A, Rosca M, Curea F, Calin C, Ginghina C, Baronaite-Dudoniene K, Vaskelyte JJ, Puodziukynas A, Smalinskas V, Urbonaite L, Botezatu CD, Enache R, Rosca M, Beladan CC, Calin A, Gurzun MM, Ginghina C, Popescu BA, Ercan S, Kervancioglu S, Davutoglu V, Cakici M, Ozkur A, Oylumlu M, Sari I, Faustino A, Paiva L, Providencia R, Trigo J, Botelho A, Costa M, Leitao-Marques A, Al Barjas M, Alwis L, Sonoda L, Balan K, Alqaseer M, Jelani A, Niaz K, Andres Lahuerta A, Igual Munoz B, Alonso Fernandez P, Maceira A, Cano O, Osca J, Sancho-Tello M, Jimenez Carreno R, De Munoz YR, De Ros JO, Bonanad Lozano C, Lopez-Lereu M, Monmeneu J, Estornell J, Igual Munoz B, Maceira A, Chaustre F, Sanchis J, Badr Eslam R, Pfaffenberger S, Marzluf B, Frey M, Bartko P, Babayev J, Kammerlander A, Maurer G, Mascherbauer J. Club 35 Poster session Friday 7 December: Dobutamine stress echo. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
45
|
Zavaritskaya O, Zhuravleva N, Schleifenbaum J, Gloe T, Devermann L, Kluge R, Mladenov M, Frey M, Gagov H, Fésüs G, Gollasch M, Schubert R. Role of KCNQ channels in skeletal muscle arteries and periadventitial vascular dysfunction. Hypertension 2012. [PMID: 23184384 DOI: 10.1161/hypertensionaha.112.197566] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
KCNQ channels have been identified in arterial smooth muscle. However, their role in vasoregulation and chronic vascular diseases remains elusive. We tested the hypothesis that KCNQ channels contribute to periadventitial vasoregulation in peripheral skeletal muscle arteries by perivascular adipose tissue and that they represent novel targets to rescue periadventitial vascular dysfunction. Two models, spontaneously hypertensive rats and New Zealand obese mice, were studied using quantitative polymerase chain reaction, the patch-clamp technique, membrane potential measurements, myography of isolated vessels, and blood pressure telemetry. In rat Gracilis muscle arteries, anticontractile effects of perivascular fat were inhibited by the KCNQ channel blockers XE991 and linopirdine but not by other selective K(+) channel inhibitors. Accordingly, XE991 and linopirdine blocked noninactivating K(+) currents in freshly isolated Gracilis artery smooth muscle cells. mRNAs of several KCNQ channel subtypes were detected in those arteries, with KCNQ4 channels being dominant. In spontaneously hypertensive rats, the anticontractile effect of perivascular fat in Gracilis muscle arteries was largely reduced compared with Wistar rats. However, the vasodilator effects of KCNQ channel openers and mRNA expression of KCNQ channels were normal. Furthermore, KCNQ channel openers restored the diminished anticontractile effects of perivascular fat in spontaneously hypertensive rats. Moreover, KCNQ channel openers reduced arterial blood pressure in both models of hypertension independent of ganglionic blockade. Thus, our data suggest that KCNQ channels play a pivotal role in periadventitial vasoregulation of peripheral skeletal muscle arteries, and KCNQ channel opening may be an effective mechanism to improve impaired periadventitial vasoregulation and associated hypertension.
Collapse
Affiliation(s)
- Olga Zavaritskaya
- Centre for Biomedicine and Medical Technology Mannheim, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Huang J, Frey M, Kofinas J. Comparison of Perioperative Outcomes Associated with Robotic-Assisted Hysterectomy and Myomectomy. J Minim Invasive Gynecol 2012. [DOI: 10.1016/j.jmig.2012.08.021] [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]
|
47
|
Kitzinger HB, Abayev S, Pittermann A, Karle B, Bohdjalian A, Langer FB, Prager G, Frey M. After massive weight loss: patients' expectations of body contouring surgery. Obes Surg 2012; 22:544-8. [PMID: 22101887 DOI: 10.1007/s11695-011-0551-6] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Massive weight loss following bariatric surgery leads to excess skin with functional and aesthetic impairments. Surplus skin can then contribute to problems with additional weight loss or gain. The aims of the current study were to evaluate the frequency of massive soft tissue development in gastric bypass patients, to determine whether males and females experience similar post-bypass body changes, and to learn about the expectations and impairments related to body contouring surgery. METHODS A questionnaire addressing information on the satisfaction of body image, quality of life, and expectation of body contouring surgery following massive weight loss was mailed to 425 patients who had undergone gastric bypass surgery between 2003 and 2009. Of these 425 individuals, 252 (59%) patients completed the survey. RESULTS Ninety percent of women and 88% of men surveyed rated their appearance following massive weight loss as satisfactory, good, or very good. However, 96% of all patients developed surplus skin, which caused intertriginous dermatitis and itching. In addition, patients reported problems with physical activity (playing sports) and finding clothing that fit appropriately. Moreover, 75% of female and 68% of male patients reported desiring body contouring surgery. The most important expectation of body contouring surgery was improved appearance, followed by improved self-confidence and quality of life. CONCLUSIONS Surplus skin resulting from gastric bypass surgery is a common issue that causes functional and aesthetic impairments in patients. Consequently, this increases the desire for body contouring surgery with high expectations for the aesthetic outcome as well as improved life satisfaction.
Collapse
Affiliation(s)
- Hugo B Kitzinger
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, General Hospital Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Keck M, Zeyda M, Burjak S, Kamolz LP, Selig H, Stulnig TM, Frey M. Coenzyme Q10 does not enhance preadipocyte viability in an in vitro lipotransfer model. Aesthetic Plast Surg 2012; 36:453-7. [PMID: 21964747 DOI: 10.1007/s00266-011-9823-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Accepted: 09/11/2011] [Indexed: 10/17/2022]
Abstract
BACKGROUND Autologous fat is an attractive soft-tissue filler in plastic and reconstructive surgery. The success of the procedure relies strongly on the technique of transferring viable preadipocytes. Among other factors, preadipocyte viability is impaired by local anesthetics. Application of coenzyme Q10 is being performed by aesthetic plastic surgeons to enhance the success of lipotransfer. The aim of this study was to evaluate the effect of Q10 on preadipocyte viability with special regard to impairment after lidocaine treatment. METHODS Preadipocytes were pretreated with coenzyme Q10 or vehicle control followed by incubation with lidocaine for 30 min. Viability and apoptosis were assessed by FACS analysis and Western blot. RESULTS Coenzyme Q10 did not improve viability nor have any effect on investigated apoptosis parameters. Preadipocyte viability was reduced after lidocaine treatment. Surface binding of annexin V, cleavage of caspase-3, and abundance of subdiploid cells were not detectable though, suggesting that necrosis rather than apoptosis is the cause for reduced preadipocyte viability. CONCLUSION Our results indicate that Q10 does not improve preadipocyte viability. Preadipocyte cell death induced by lidocaine is not caused by apoptosis but by necrosis, which cannot be prevented by coenzyme Q10. These findings should be taken into account when searching for solutions to improve preadipocyte viability in the context of soft tissue engineering and autologous fat transfer.
Collapse
|
49
|
Shih K, Frey M, Chi D, Sonoda Y, Abu-Rustum N, Barakat R, Alektiar K. Impact of postoperative intensity-modulated radiation therapy on the rate of bowel obstruction in gynecologic malignancy. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.362] [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: 10/28/2022]
|
50
|
Long K, Tanner E, Frey M, Cormier B, Gardner G, Sonoda Y, Levine D, Brown C, Barakat R, Chi D. Does intraoperative hypothermia contribute to postoperative morbidity in patients undergoing optimal primary surgical cytoreduction for advanced ovarian cancer? Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|