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Pacheco-Fernandez N, Pakdel M, Blank B, Sanchez-Gonzalez I, Weber K, Tran ML, Hecht TKH, Gautsch R, Beck G, Perez F, Hausser A, Linder S, von Blume J. Nucleobindin-1 regulates ECM degradation by promoting intra-Golgi trafficking of MMPs. J Cell Biol 2021; 219:151825. [PMID: 32479594 PMCID: PMC7401813 DOI: 10.1083/jcb.201907058] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [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: 07/09/2019] [Revised: 12/29/2019] [Accepted: 05/04/2020] [Indexed: 12/14/2022] Open
Abstract
Matrix metalloproteinases (MMPs) degrade several ECM components and are crucial modulators of cell invasion and tissue organization. Although much has been reported about their function in remodeling ECM in health and disease, their trafficking across the Golgi apparatus remains poorly understood. Here we report that the cis-Golgi protein nucleobindin-1 (NUCB1) is critical for MMP2 and MT1-MMP trafficking along the Golgi apparatus. This process is Ca2+-dependent and is required for invasive MDA-MB-231 cell migration as well as for gelatin degradation in primary human macrophages. Our findings emphasize the importance of NUCB1 as an essential component of MMP transport and its overall impact on ECM remodeling.
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Affiliation(s)
| | | | - Birgit Blank
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT
| | | | - Kathrin Weber
- Institut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg, Hamburg, Germany
| | - Mai Ly Tran
- Max Planck Institute of Biochemistry, Martinsried, Germany.,Department of Cell Biology, Yale University School of Medicine, New Haven, CT
| | - Tobias Karl-Heinz Hecht
- Max Planck Institute of Biochemistry, Martinsried, Germany.,Department of Cell Biology, Yale University School of Medicine, New Haven, CT
| | - Renate Gautsch
- Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Gisela Beck
- Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Franck Perez
- Institute Curie, PSL Research University, Centre National de la Recherche Scientifique, UMR 144, Paris, France
| | - Angelika Hausser
- Institute of Cell Biology and Immunology, University of Stuttgart, Stuttgart, Germany
| | - Stefan Linder
- Institut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg, Hamburg, Germany
| | - Julia von Blume
- Max Planck Institute of Biochemistry, Martinsried, Germany.,Department of Cell Biology, Yale University School of Medicine, New Haven, CT
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2
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Hecht TKH, Blank B, Steger M, Lopez V, Beck G, Ramazanov B, Mann M, Tagliabracci V, von Blume J. Fam20C regulates protein secretion by Cab45 phosphorylation. J Cell Biol 2020; 219:e201910089. [PMID: 32422653 PMCID: PMC7265331 DOI: 10.1083/jcb.201910089] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 03/06/2020] [Accepted: 04/02/2020] [Indexed: 12/18/2022] Open
Abstract
The TGN is a key compartment for the sorting and secretion of newly synthesized proteins. At the TGN, soluble proteins are sorted based on the instructions carried in their oligosaccharide backbones or by a Ca2+-mediated process that involves the cargo-sorting protein Cab45. Here, we show that Cab45 is phosphorylated by the Golgi-specific protein kinase Fam20C. Mimicking of phosphorylation translocates Cab45 into TGN-derived vesicles, which goes along with an increased export of LyzC, a Cab45 client. Our findings demonstrate that Fam20C plays a key role in the export of Cab45 clients by fine-tuning Cab45 oligomerization and thus impacts Cab45 retention in the TGN.
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Affiliation(s)
- Tobias Karl-Heinz Hecht
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT
- Max Planck Institute of Biochemistry, Department of Molecular Medicine, Martinsried, Germany
| | - Birgit Blank
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT
- Max Planck Institute of Biochemistry, Department of Molecular Medicine, Martinsried, Germany
| | - Martin Steger
- Max Planck Institute of Biochemistry, Department of Molecular Medicine, Martinsried, Germany
| | - Victor Lopez
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Gisela Beck
- Max Planck Institute of Biochemistry, Department of Molecular Medicine, Martinsried, Germany
| | - Bulat Ramazanov
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT
| | - Matthias Mann
- Max Planck Institute of Biochemistry, Department of Molecular Medicine, Martinsried, Germany
| | - Vincent Tagliabracci
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Julia von Blume
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT
- Max Planck Institute of Biochemistry, Department of Molecular Medicine, Martinsried, Germany
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3
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Blondeau LD, Rubin JE, Deneer H, Kanthan R, Morrison B, Sanche S, Rypien C, Dueck D, Beck G, Blondeau JM. Persistent infection with Staphylococcus pseudintermedius in an adult oncology patient with transmission from a family dog. J Chemother 2020; 32:151-155. [PMID: 32124685 DOI: 10.1080/1120009x.2020.1735142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Staphylococcus pseudintermedius is a well known commensal organism of dogs but also a canine opportunistic pathogen. Reports of this organism being recovered from specimens from humans might suggest an increase prevalence in human infections and/or improved diagnostic leading to more accurate identification. Here we report a case of persistent S. pseudintermedius infection in an adult female oncology patient including colonization of the tip of an indwelling catheter. Diligence by laboratories in correctly isolating and identifying this pathogen (including susceptibility testing) is essential for optimal patient care.
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Affiliation(s)
- L D Blondeau
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J E Rubin
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - H Deneer
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Pathology and Laboratory Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - R Kanthan
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Pathology and Laboratory Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - B Morrison
- Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - S Sanche
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Division of Clinical Microbiology, Royal University Hospital and Saskatchewan Health Authority, Saskatoon, Saskatchewan, Canada.,Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - C Rypien
- Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - D Dueck
- Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - G Beck
- Surgery, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J M Blondeau
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Pathology and Laboratory Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Division of Clinical Microbiology, Royal University Hospital and Saskatchewan Health Authority, Saskatoon, Saskatchewan, Canada.,Departments of Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Ophthalmology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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4
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Marcou G, Flamme B, Beck G, Chagnes A, Mokshyna O, Horvath D, Varnek A. In silico
Design, Virtual Screening and Synthesis of Novel Electrolytic Solvents. Mol Inform 2019; 38:e1900014. [DOI: 10.1002/minf.201900014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/07/2019] [Indexed: 11/11/2022]
Affiliation(s)
- G. Marcou
- Faculty of Chemistry – UMR7140University of Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - B. Flamme
- Ecole Nationale Supérieure de Chimie de Paris 11 Rue Pierre et Marie Curie 75005 Paris France
| | - G. Beck
- Faculty of Chemistry – UMR7140University of Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - A. Chagnes
- Université de Lorraine, CNRS, GeoRessources F-54000 Nancy France
| | - O. Mokshyna
- Faculty of Chemistry – UMR7140University of Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - D. Horvath
- Faculty of Chemistry – UMR7140University of Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - A. Varnek
- Faculty of Chemistry – UMR7140University of Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
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5
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Nelson S, Milgrom P, Albert JM, Selvaraj D, Cunha-Cruz J, Curtan S, Copeland T, Heima M, Rothen M, Beck G, Ferretti G, Riedy C. Randomized Trial Based on the Common-Sense Model of Self-regulation to Increase Child Dental Visits. JDR Clin Trans Res 2019; 4:323-332. [PMID: 30931720 DOI: 10.1177/2380084419830662] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION School screening and the note home (pinned to a backpack) informing parents/caregivers that their child needs to see a dentist have not been effective. OBJECTIVES The Family Access to a Dentist Study (FADS) evaluated the effectiveness of school interventions based on the common-sense model of self-regulation (CSM) among K-4 children needing restorative treatment. METHODS FADS was a multisite double-blind randomized controlled trial with 5 arms. FADS tested a CSM-driven referral letter and dental information guide (DIG) to move caregivers from inaccurate to accurate perceptions of dental caries. Six school districts from Ohio and Washington (14 schools) participated in school years 2015 to 2016 and 2016 to 2017. A total of 611 caregivers were randomized, and 86% (n = 597 children) completed the exit examination. The primary outcome was receipt of care based on a change in oral health status determined clinically within 1 school year. RESULTS In accordance with our primary aims, 5 arms were collapsed into 3: CSM letter and reduced CSM letter (combined), CSM letter + DIG and reduced CSM letter + reduced DIG (combined), and standard letter. Among all sites, 39.7% received restorative care (237 of 597). Combined analysis of sites revealed that the CSM referral letter (with and without the DIG) did not increase dental visits when compared with the standard letter. However, for combined sites (East Cleveland, Ohio; Washington), the CSM + DIG increased dental visits when compared with standard letter in univariate analysis (51.3% vs. 40.9%), indicating 1.6-times increased odds of a dental visit (95% CI, 0.97 to 2.58) after imputation and adjustment for covariates. The CSM + DIG group had 1.9-times increased odds (95% CI, 1.21 to 3.08) of care when compared the CSM letter alone. CONCLUSION A CSM-driven approach to informing caregivers of the chronic nature of caries with resources in an illustrative manner can increase the benefit of school oral health screening (ClinicalTrials.gov NCT02395120). KNOWLEDGE TRANSFER STATEMENT A school dental referral (note home) that tells a parent that the child has cavities has not been effective. In this trial, a referral based on the common-sense model of self-regulation increased follow-up care for children with restorative needs.
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Affiliation(s)
- S Nelson
- Department of Community Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - P Milgrom
- Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
| | - J M Albert
- Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - D Selvaraj
- Department of Community Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - J Cunha-Cruz
- Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
| | - S Curtan
- Department of Community Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - T Copeland
- Department of Community Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - M Heima
- Department of Pediatric Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - M Rothen
- Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
| | - G Beck
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH, USA
| | - G Ferretti
- Department of Pediatric Dentistry, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - C Riedy
- Department of Oral Health Policy and Epidemiology, Harvard School of Dental Medicine, Boston, MA, USA
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6
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Sumi-Akamaru H, Beck G, Riku Y, Yoshida M, Fujimura H, Kato S, Mochizuki H. Iron accumulation and neuroaxonal dystrophy in PLA2G6 associated neurodegeneration. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Crevenna AH, Blank B, Maiser A, Emin D, Prescher J, Beck G, Kienzle C, Bartnik K, Habermann B, Pakdel M, Leonhardt H, Lamb DC, von Blume J. Secretory cargo sorting by Ca2+-dependent Cab45 oligomerization at the trans-Golgi network. J Cell Biol 2016; 213:305-14. [PMID: 27138253 PMCID: PMC4862333 DOI: 10.1083/jcb.201601089] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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: 01/25/2016] [Accepted: 04/06/2016] [Indexed: 11/22/2022] Open
Abstract
Crevenna et al. examine the mechanism by which secretory cargoes are segregated at the trans-Golgi network (TGN) for release into the extracellular space. The authors demonstrate that Ca2+-dependent changes in Cab45 oligomerization mediate sorting of specific cargo molecules at the TGN. Sorting and export of transmembrane cargoes and lysosomal hydrolases at the trans-Golgi network (TGN) are well understood. However, elucidation of the mechanism by which secretory cargoes are segregated for their release into the extracellular space remains a challenge. We have previously demonstrated that, in a reaction that requires Ca2+, the soluble TGN-resident protein Cab45 is necessary for the sorting of secretory cargoes at the TGN. Here, we report that Cab45 reversibly assembles into oligomers in the presence of Ca2+. These Cab45 oligomers specifically bind secretory proteins, such as COMP and LyzC, in a Ca2+-dependent manner in vitro. In intact cells, mutation of the Ca2+-binding sites in Cab45 impairs oligomerization, as well as COMP and LyzC sorting. Superresolution microscopy revealed that Cab45 colocalizes with secretory proteins and the TGN Ca2+ pump (SPCA1) in specific TGN microdomains. These findings reveal that Ca2+-dependent changes in Cab45 mediate sorting of specific cargo molecules at the TGN.
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Affiliation(s)
- Alvaro H. Crevenna
- Physical Chemistry, Department of Chemistry Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig Maximilians University Munich, 81377 Munich, Germany
| | - Birgit Blank
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Andreas Maiser
- Department of Biology II, Ludwig Maximilian University Munich, 82152 Martinsried, Germany
- Center for Integrated Protein Science, Ludwig Maximilians University Munich, 82152 Martinsried, Germany
| | - Derya Emin
- Physical Chemistry, Department of Chemistry Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig Maximilians University Munich, 81377 Munich, Germany
| | - Jens Prescher
- Physical Chemistry, Department of Chemistry Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig Maximilians University Munich, 81377 Munich, Germany
| | - Gisela Beck
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | | | - Kira Bartnik
- Physical Chemistry, Department of Chemistry Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig Maximilians University Munich, 81377 Munich, Germany
| | - Bianca Habermann
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Mehrshad Pakdel
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Heinrich Leonhardt
- Department of Biology II, Ludwig Maximilian University Munich, 82152 Martinsried, Germany
- Center for Integrated Protein Science, Ludwig Maximilians University Munich, 82152 Martinsried, Germany
| | - Don C. Lamb
- Physical Chemistry, Department of Chemistry Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig Maximilians University Munich, 81377 Munich, Germany
| | - Julia von Blume
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
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8
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9
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Dreher M, Grawe A, Albert D, Beck G, Ferrari M. [Extended coronary dissection caused by severe polytrauma with contusio cordis : Venoarterial ECMO-assisted percutaneous coronary intervention]. Med Klin Intensivmed Notfmed 2015; 111:325-9. [PMID: 26153466 DOI: 10.1007/s00063-015-0049-4] [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: 02/17/2015] [Revised: 04/20/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
Abstract
Treatment of a patient with acute cardiac failure due to a contusio cordis after polytrauma by an interdisciplinary team is reported. Shortly after admission to our shock room, the patient developed cardiogenic shock caused by an extended coronary dissection. After interim cardiopulmonary resuscitation, the patient was stabilized by venoarterial extracorporeal membrane oxygenation (ECMO) and subsequent complex coronary artery intervention in the heart catheter laboratory. Despite the increased left ventricular function which enabled partial weaning from the ECMO, the patient died of multiple organ failure 10 days after admission.
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Affiliation(s)
- M Dreher
- Klinik für Innere Medizin I, Kardiologie, konservative Intensivmedizin, Angiologie, HSK, Dr. Horst Schmidt Kliniken GmbH - Städtisches Klinikum der Landeshauptstadt Wiesbaden und der Helios-Kliniken GmbH, Ludwig-Erhard-Str. 100, 65199, Wiesbaden, Deutschland.
| | - A Grawe
- Klinik für Innere Medizin I, Kardiologie, konservative Intensivmedizin, Angiologie, HSK, Dr. Horst Schmidt Kliniken GmbH - Städtisches Klinikum der Landeshauptstadt Wiesbaden und der Helios-Kliniken GmbH, Ludwig-Erhard-Str. 100, 65199, Wiesbaden, Deutschland
| | - D Albert
- Anästhesiologie, Intensivmedizin und Schmerztherapie, HSK, Dr. Horst Schmidt Kliniken GmbH - Städtisches Klinikum der Landeshauptstadt Wiesbaden und der Helios-Kliniken GmbH, Wiesbaden, Deutschland
| | - G Beck
- Anästhesiologie, Intensivmedizin und Schmerztherapie, HSK, Dr. Horst Schmidt Kliniken GmbH - Städtisches Klinikum der Landeshauptstadt Wiesbaden und der Helios-Kliniken GmbH, Wiesbaden, Deutschland
| | - M Ferrari
- Klinik für Innere Medizin I, Kardiologie, konservative Intensivmedizin, Angiologie, HSK, Dr. Horst Schmidt Kliniken GmbH - Städtisches Klinikum der Landeshauptstadt Wiesbaden und der Helios-Kliniken GmbH, Ludwig-Erhard-Str. 100, 65199, Wiesbaden, Deutschland
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10
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Abusalim N, Weigand H, Kämpfer H, Schalber C, Beck G, Schirren J. Interventionelle Möglichkeiten des Radiologen bei der Hämoptyse im Rahmen interdisziplinären Therapiekonzeptes. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Klingner C, Cherian AV, Fels J, Diesinger PM, Aufschnaiter R, Maghelli N, Keil T, Beck G, Tolić-Nørrelykke IM, Bathe M, Wedlich-Soldner R. Isotropic actomyosin dynamics promote organization of the apical cell cortex in epithelial cells. ACTA ACUST UNITED AC 2015; 207:107-21. [PMID: 25313407 PMCID: PMC4195824 DOI: 10.1083/jcb.201402037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Apical membrane organization of nonconfluent epithelial cells is driven by a dynamic network of actin and myosin II filaments. Although cortical actin plays an important role in cellular mechanics and morphogenesis, there is surprisingly little information on cortex organization at the apical surface of cells. In this paper, we characterize organization and dynamics of microvilli (MV) and a previously unappreciated actomyosin network at the apical surface of Madin–Darby canine kidney cells. In contrast to short and static MV in confluent cells, the apical surfaces of nonconfluent epithelial cells (ECs) form highly dynamic protrusions, which are often oriented along the plane of the membrane. These dynamic MV exhibit complex and spatially correlated reorganization, which is dependent on myosin II activity. Surprisingly, myosin II is organized into an extensive network of filaments spanning the entire apical membrane in nonconfluent ECs. Dynamic MV, myosin filaments, and their associated actin filaments form an interconnected, prestressed network. Interestingly, this network regulates lateral mobility of apical membrane probes such as integrins or epidermal growth factor receptors, suggesting that coordinated actomyosin dynamics contributes to apical cell membrane organization.
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Affiliation(s)
- Christoph Klingner
- Cellular Dynamics and Cell Patterning and Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany
| | - Anoop V Cherian
- Cellular Dynamics and Cell Patterning and Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Johannes Fels
- Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany
| | - Philipp M Diesinger
- Laboratory for Computational Biology & Biophysics, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Roland Aufschnaiter
- Cellular Dynamics and Cell Patterning and Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany
| | - Nicola Maghelli
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Thomas Keil
- Cellular Dynamics and Cell Patterning and Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Gisela Beck
- Cellular Dynamics and Cell Patterning and Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany
| | - Iva M Tolić-Nørrelykke
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany Division of Molecular Biology, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Mark Bathe
- Laboratory for Computational Biology & Biophysics, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Roland Wedlich-Soldner
- Cellular Dynamics and Cell Patterning and Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany Institute of Cell Dynamics and Imaging and Cells-In-Motion Cluster of Excellence (EXC1003-CiM), University of Münster, 48149 Münster, Germany
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12
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Kienzle C, Basnet N, Crevenna AH, Beck G, Habermann B, Mizuno N, von Blume J. Cofilin recruits F-actin to SPCA1 and promotes Ca2+-mediated secretory cargo sorting. ACTA ACUST UNITED AC 2014; 206:635-54. [PMID: 25179631 PMCID: PMC4151145 DOI: 10.1083/jcb.201311052] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The cofilin CFL-1 recruits actin to the P-type calcium ATPase SPCA1 at the trans-Golgi network, thereby activating the ATPase, promoting Ca2+ influx, and driving secretory cargo sorting. The actin filament severing protein cofilin-1 (CFL-1) is required for actin and P-type ATPase secretory pathway calcium ATPase (SPCA)-dependent sorting of secretory proteins at the trans-Golgi network (TGN). How these proteins interact and activate the pump to facilitate cargo sorting, however, is not known. We used purified proteins to assess interaction of the cytoplasmic domains of SPCA1 with actin and CFL-1. A 132–amino acid portion of the SPCA1 phosphorylation domain (P-domain) interacted with actin in a CFL-1–dependent manner. This domain, coupled to nickel nitrilotriacetic acid (Ni-NTA) agarose beads, specifically recruited F-actin in the presence of CFL-1 and, when expressed in HeLa cells, inhibited Ca2+ entry into the TGN and secretory cargo sorting. Mutagenesis of four amino acids in SPCA1 that represent the CFL-1 binding site also affected Ca2+ import into the TGN and secretory cargo sorting. Altogether, our findings reveal the mechanism of CFL-1–dependent recruitment of actin to SPCA1 and the significance of this interaction for Ca2+ influx and secretory cargo sorting.
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Affiliation(s)
| | - Nirakar Basnet
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Alvaro H Crevenna
- Physical Chemistry, Department of Chemistry and Biochemistry and Center for NanoScience (CeNS), Ludwig Maximilians University of Munich, 81377 Munich, Germany
| | - Gisela Beck
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Bianca Habermann
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Naoko Mizuno
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Julia von Blume
- Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
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13
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Ghezel-Ahmadi V, Ghezel-Ahmadi D, Holtz A, Boelukbas S, Schirren J, Beck G. Effekte einer adjuvanten perioperativen Magnesiumgabe nach Thorakotomie: Reduktion von postoperativem Vorhofflimmern und Schmerzen. Zentralbl Chir 2014. [DOI: 10.1055/s-0034-1389355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Abstract
The following absolute rate constants of the reactions of eaq
⊖ and OH with dimethylthioether and dimethylsulfoxide have been determined: k (eaq
⊖ + CH3SCH3) =2.0·107 mol-1 l sec-1; k(e⊖+ CH3SOCH3) =1.7·106; k(OH+CH3SCH3) =5.2·109; k(OH+CH3SOCH3) =4.2·109. The acid and basic components of the equilibrium
are formed in the reactions of OH+CH3SCH3 and eaq
⊖ +CH3SOCH3, respectively. The anion absorbs at 3500 Å. The ρK value of the equilibrium was found to be equal to 10.2. The CH2SCH3 radical (2900 Å) and the ions CH3SCH3
⊕ or (CH3SCH3)2⊕ (4700 Å) are also formed in the reaction between OH and CH3SCH3. High thioether and low OH⊖ concentrations favour the formation of the positive ion which is believed to result from a reaction between CH3SOHCH3 and CH3SCH3.
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Affiliation(s)
- G. Meissner
- Hahn-Meitner-Institut für Kernforschung Berlin, Sektor Strahlenchemie
| | - A. Henglein
- Hahn-Meitner-Institut für Kernforschung Berlin, Sektor Strahlenchemie
| | - G. Beck
- Hahn-Meitner-Institut für Kernforschung Berlin, Sektor Strahlenchemie
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Rocco M, Daugirdas J, Greene T, Lockridge R, Chan C, Pierratos A, Lindsay R, Larive B, Chertow G, Beck G, Eggers P, Kliger A, Laville M, Dorval M, Fort Ros J, Fay R, Cridlig J, Nortier JL, Juillard L, D bska- lizie A, Fernandez Lorente L, Thibaudin D, Franssen CF, Schulz M, Moureau F, Loughraieb N, Rossignol P, Kliger AS, Chertow GM, Levin NW, Beck GJ, Daugirdas JT, Eggers PW, Larive B, Rocco MV, Greene T, Marcelli D, Jirka T, Merello JI, Ponce P, Ladanyi E, Di Benedetto A, Rosenberger J, Stuard S, Scholz C, Canaud B. NEW DIALYSIS TECHNIQUES. Nephrol Dial Transplant 2014; 29:iii37-iii38. [PMCID: PMC4049063 DOI: 10.1093/ndt/gfu125] [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: 09/02/2023] Open
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Lilie J, Beck G, Henglein A. Pulsradiolyse und Polarographie: Halbstufenpotentiale für die Oxydation und Reduktion von kurzlebigen organischen Radikalen an der Hg-Elektrode. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.19710750513] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Freisinger T, Klünder B, Johnson J, Müller N, Pichler G, Beck G, Costanzo M, Boone C, Cerione RA, Frey E, Wedlich-Söldner R. Establishment of a robust single axis of cell polarity by coupling multiple positive feedback loops. Nat Commun 2013; 4:1807. [PMID: 23651995 PMCID: PMC3674238 DOI: 10.1038/ncomms2795] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [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: 11/13/2012] [Accepted: 03/22/2013] [Indexed: 01/06/2023] Open
Abstract
Establishment of cell polarity—or symmetry breaking—relies on local accumulation of polarity regulators. Although simple positive feedback is sufficient to drive symmetry breaking, it is highly sensitive to stochastic fluctuations typical for living cells. Here, by integrating mathematical modelling with quantitative experimental validations, we show that in the yeast Saccharomyces cerevisiae a combination of actin- and guanine nucleotide dissociation inhibitor-dependent recycling of the central polarity regulator Cdc42 is needed to establish robust cell polarity at a single site during yeast budding. The guanine nucleotide dissociation inhibitor pathway consistently generates a single-polarization site, but requires Cdc42 to cycle rapidly between its active and inactive form, and is therefore sensitive to perturbations of the GTPase cycle. Conversely, actin-mediated recycling of Cdc42 induces robust symmetry breaking but cannot restrict polarization to a single site. Our results demonstrate how cells optimize symmetry breaking through coupling between multiple feedback loops. A positive feedback loop which results in localized accumulation of the small GTPase Cdc42 generates cell polarity in budding yeast; however, such loops are inherently susceptible to noise. Here the authors demonstrate how two pathways that mediate Cdc42 recycling work together to ensure the robustness of symmetry breaking.
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Affiliation(s)
- Tina Freisinger
- Max-Planck-Institute of Biochemistry, Cellular Dynamics and Cell Patterning, Am Klopferspitz 18, D-82152 Martinsried, Germany
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18
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Baja J, Welker AS, Beck G, Schleppers A, Fischer M, Weiß C. [Professional image of anesthetists in the general public. Influence of provision of information and previous experience with the discipline]. Anaesthesist 2013; 63:114-21. [PMID: 24352743 DOI: 10.1007/s00101-013-2276-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 11/13/2013] [Accepted: 11/14/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND The profession of the anesthetist in Germany includes the disciplines anesthesia, intensive care, emergency and pain medicine. Despite the versatility and competence of the profession, patients do not appear to have recognized anesthesiology as a medical discipline or anesthetists as medical doctors. AIM This study was conducted with the aim of estimating how previous experience and information gathered before contact with the anesthetist for premedication have influenced and changed the perception of patients with regards to the professional fields and the characteristics of anesthetists. MATERIAL AND METHODS A total of 3,950 patients from 3 German hospitals were asked to answer a questionnaire handed out by the assistance nurse in the premedication area prior to the medical consultation with the duty anesthetist. The questions involved the patient perception of the discipline, the characteristics of anesthetists and also evaluated the patient previous experience and provision of information. According to the answers 1,753 patients were considered eligible for the study and were categorized into subgroups I-IV (group I interested and experienced with operations, group II interested but inexperienced, group III uninterested but experienced and group IV neither interested nor experienced) for statistical analysis. RESULTS Of the respondents 56.2 % had obtained previous information from a general practitioner followed by acquaintances (21.4 %) and the internet (19.9 %), which significantly differed with age. Interested and experienced patients showed the best perception of the profession. Often, the knowledge of interested and uninterested persons did not significantly differ. Interested patients and those with experience of anesthesiology had the best knowledge of anesthesiology. Performing anesthesia was most often identified by all groups (50.9-95.3 %) as a function of anesthetists while the other professional fields were recognized correctly by only 5.8-26.6 %. Depending on the group 41.0-84.4 % regarded anesthetists as medical doctors. Only 15.0-78.3 % of other attributes were associated with anesthetists. CONCLUSION Unfortunately, the perception of patients on the versatility and characteristics of anesthetists are poorly developed. However, the knowledge differs significantly depending on previous experience and gathered information. Interestingly patients with previous experience mostly showed better knowledge compared to interested patients. Results suggest that personal interaction, patient-physician communication in general and improved collaboration between general practitioners and anesthetists are the key elements for better patient knowledge, which could lead to increased patient satisfaction.
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Affiliation(s)
- J Baja
- Klinik für Anästhesiologie und Operative Intensivmedizin, Uniklinik Köln, Kerpener Str. 62, 50937, Köln, Deutschland,
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Geldner G, Niskanen M, Laurila P, Mizikov V, Hübler M, Beck G, Rietbergen H, Nicolayenko E. A randomised controlled trial comparing sugammadex and neostigmine at different depths of neuromuscular blockade in patients undergoing laparoscopic surgery. Anaesthesia 2012; 67:991-8. [PMID: 22698066 DOI: 10.1111/j.1365-2044.2012.07197.x] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Deep neuromuscular blockade during certain surgical procedures may improve operating conditions. Sugammadex can be used to reverse deep neuromuscular blockade without waiting for spontaneous recovery. This randomised study compared recovery times from neuromuscular blockade induced by rocuronium 0.6 mg.kg(-1), using sugammadex 4 mg.kg(-1) administered at 1-2 post-tetanic count (deep blockade) or neostigmine 50 μg.kg(-1) (plus atropine 10 μg.kg(-1)) administered at the re-appearance of the second twitch of a train-of-four stimulation (moderate blockade), in patients undergoing laparoscopic surgery. The primary efficacy variable was the time from the start of sugammadex/neostigmine administration to recovery of the train-of-four ratio to 0.9. Patients receiving sugammadex recovered 3.4 times faster than patients receiving neostigmine (geometric mean (95% CI) recovery times of 2.4 (2.1-2.7) and 8.4 (7.2-9.8) min, respectively, p<0.0001). Moreover, 94% (62/66) of sugammadex-treated patients recovered within 5 min, vs 20% (13/65) of neostigmine-treated patients, despite the difference in the depth of neuromuscular blockade at the time of administration of both drugs. The ability to provide deep neuromuscular blockade throughout the procedure but still permit reversal at the end of surgery may enable improved surgical access and an enhanced visual field.
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Affiliation(s)
- G Geldner
- Department of Anaesthesiology, Klinikum Ludwigsburg, Academic Teaching Hospital, University of Heidelberg, Ludwigsburg, Germany.
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20
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Spira F, Mueller NS, Beck G, von Olshausen P, Beig J, Wedlich-Söldner R. Patchwork organization of the yeast plasma membrane into numerous coexisting domains. Nat Cell Biol 2012; 14:640-8. [PMID: 22544065 DOI: 10.1038/ncb2487] [Citation(s) in RCA: 168] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 03/21/2012] [Indexed: 12/29/2022]
Abstract
The plasma membrane is made up of lipids and proteins, and serves as an active interface between the cell and its environment. Many plasma-membrane proteins are laterally segregated in the plane of the membrane, but the underlying mechanisms remain controversial. Here we investigate the distribution and dynamics of a representative set of plasma-membrane-associated proteins in yeast cells. These proteins were distributed non-homogeneously in patterns ranging from distinct patches to nearly continuous networks, and these patterns were in turn strongly influenced by the lipid composition of the plasma membrane. Most proteins segregated into distinct domains. However, proteins with similar or identical transmembrane sequences (TMSs) showed a marked tendency to co-localize. Indeed we could predictably relocate proteins by swapping their TMSs. Finally, we found that the domain association of plasma-membrane proteins has an impact on their function. Our results are consistent with self-organization of biological membranes into a patchwork of coexisting domains.
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Affiliation(s)
- Felix Spira
- Cellular Dynamics and Cell Patterning, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
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21
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Tsagogiorgas C, Jung T, Krebs J, Theisinger B, Beck G, Yard BA, Quintel M. Aerosolized semifluorinated alkanes as excipients are suitable for inhalative drug delivery--a pilot study. Int J Pharm 2011; 422:194-201. [PMID: 22079720 DOI: 10.1016/j.ijpharm.2011.10.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 10/23/2011] [Accepted: 10/27/2011] [Indexed: 11/26/2022]
Abstract
Semifluorinated alkanes (SFAs) have been described as potential excipients for pulmonary drug delivery, but proof of their efficacy is still lacking. We tested whether SFA formulations with the test drug ibuprofen can be nebulised and evaluated their pharmacokinetics. Physico-chemical properties of five different ibuprofen formulations were evaluated: an aqueous solution (H2O), two different SFAs (perfluorohexyloctane (F6H8), perfluorobutylpentane (F4H5)) with and without ethanol (SFA/EtOH). Nebulisation was performed with a jet catheter system. Inhalative characteristics were evaluated by laser diffraction. A confirmative animal study with an inhalative single-dose (6 mg/kg) of ibuprofen with each formulation was performed in anaesthetised healthy rabbits. Plasma samples at defined time points and lung tissue harvested after the 6-h study period were analyzed by HPLC-MS/MS. Pharmacokinetics were calculated using a non-compartment model. All formulations were nebulisable. No differences in aerodynamic diameters (MMAD) were detected between SFA and SFA/EtOH. The ibuprofen plasma concentration-time curve (AUC) was highest with F4H5/EtOH. In contrast, F6H8/EtOH had the highest deposition of ibuprofen into lung tissue but the lowest AUC. All tested SFA and SFA/EtOH formulations are suitable for inhalation. F4H5/EtOH formulations might be used for rapid systemic availability of drugs. F6H8/EtOH showed intrapulmonary deposition of the test drug.
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Affiliation(s)
- C Tsagogiorgas
- Department of Anaesthesiology and Intensive Care Medicine, University Medical Center Mannheim, Germany.
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22
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Papanikolaou N, Beck G, Peyton J, Gutierrez A, Esquivel C, Mavroidis P, Stathakis S. SU-E-T-176: A Web Based Tool for the Implementation of Routine Linac QA Following TG1 42. Med Phys 2011. [DOI: 10.1118/1.3612126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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23
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Dobrovolska T, Krastev I, Jović B, Jović V, Beck G, Lačnjevac U, Zielonka A. Phase identification in electrodeposited Ag–Cd alloys by anodic linear sweep voltammetry and X-ray diffraction techniques. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.01.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tsagogiorgas C, Krebs J, Pukelsheim M, Beck G, Yard B, Theisinger B, Quintel M, Luecke T. Semifluorinated alkanes--a new class of excipients suitable for pulmonary drug delivery. Eur J Pharm Biopharm 2010; 76:75-82. [PMID: 20685332 DOI: 10.1016/j.ejpb.2010.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 05/26/2010] [Accepted: 05/31/2010] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Semifluorinated alkanes (SFAs) are considered as diblock molecules with fluorocarbon and hydrocarbon segments. Unlike Perfluorocarbons (PFCs), SFAs have the potential to dissolve several lipophilic or water-insoluble substances. This makes them possibly suitable as new excipients for inhalative liquid drug carrier systems. PURPOSE The aim of the study was to compare physico-chemical properties of different SFAs and then to test their respective effects in healthy rabbit lungs after nebulisation. METHODS Physico-chemical properties of four different SFAs, i.e. Perfluorobutylpentane (F4H5), Perfluorohexylhexane (F6H6), Perfluorohexyloctane (F6H8) and Perfluorohexyldodecane (F6H12) were measured. Based on these results, aerosol characteristics of two potential candidates suitable as excipients for pulmonary drug delivery, i.e. F6H8 and F4H5, were determined by laser light diffraction. Tracheotomised and ventilated New Zealand White rabbits were nebulised with either a high- or a low dose of SFAs (F6H8(low/high) and F4H5(low/high)) or saline (NaCl). Ventilated healthy animals served as controls (Sham). Arterial blood gases, lung mechanics, heart rate and blood pressure were recorded prior to nebulisation and in 30 min intervals during the 6-h study period. RESULTS Out of the four SFAs studied initially, no satisfactory behaviour as a solvent has to be expected because of low lipophilicity for F6H6. Output rate during aerosolisation was very low for F6H12. F6H8 and F4H5 presented comparable aerosolisation characteristics and lipophilicity and were therefore tested in the in vivo model. Aerosol therapy, either SFAs or saline, impaired paO2/FiO2 ratio, dynamic lung compliance and respiratory mechanics in all groups, except for F4H5(low) group which behaved like the control group (Sham). F4H5(low) had no adverse effects on gas exchange or pulmonary mechanics. CONCLUSIONS Perfluorobutylpentane (F4H5) in a low-dose application may be suitable as a new inhalable excipient in SFA-based pulmonary drug delivery systems for lipophilic or water-insoluble substances.
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Affiliation(s)
- C Tsagogiorgas
- Dept. of Anaesthesiology and Intensive Care Medicine, University Medical Center Mannheim, Mannheim, Germany.
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Hoeger S, Bergstraesser C, Selhorst J, Fontana J, Birck R, Waldherr R, Beck G, Sticht C, Seelen MA, van Son WJ, Leuvenink H, Ploeg R, Schnuelle P, Yard BA. Modulation of brain dead induced inflammation by vagus nerve stimulation. Am J Transplant 2010; 10:477-89. [PMID: 20055812 DOI: 10.1111/j.1600-6143.2009.02951.x] [Citation(s) in RCA: 45] [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] [Indexed: 01/25/2023]
Abstract
Because the vagus nerve is implicated in control of inflammation, we investigated if brain death (BD) causes impairment of the parasympathetic nervous system, thereby contributing to inflammation. BD was induced in rats. Anaesthetised ventilated rats (NBD) served as control. Heart rate variability (HRV) was assessed by ECG. The vagus nerve was electrically stimulated (BD + STIM) during BD. Intestine, kidney, heart and liver were recovered after 6 hours. Affymetrix chip-analysis was performed on intestinal RNA. Quantitative PCR was performed on all organs. Serum was collected to assess TNFalpha concentrations. Renal transplantations were performed to address the influence of vagus nerve stimulation on graft outcome. HRV was significantly lower in BD animals. Vagus nerve stimulation inhibited the increase in serum TNFalpha concentrations and resulted in down-regulation of a multiplicity of pro-inflammatory genes in intestinal tissue. In renal tissue vagal stimulation significantly decreased the expression of E-selectin, IL1beta and ITGA6. Renal function was significantly better in recipients that received a graft from a BD + STIM donor. Our study demonstrates impairment of the parasympathetic nervous system during BD and inhibition of serum TNFalpha through vagal stimulation. Vagus nerve stimulation variably affected gene expression in donor organs and improved renal function in recipients.
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Affiliation(s)
- S Hoeger
- Department of Medicine V (Nephrology/Endocrinology/Rheumatology), University Medical Center Mannheim, University of Heidelberg, and Clinic for Anaesthesiology and Intensive Care Medicine, University Hospital of Mannheim, Mannheim, Germany.
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Hoeger S, Bergstraesser C, Selhorst J, Fontana J, Birck R, Waldherr R, Beck G, Sticht C, Seelen MA, van Son WJ, Leuvenink H, Ploeg R, Schnuelle P, Yard BA. Modulation of brain dead induced inflammation by vagus nerve stimulation. Am J Transplant 2010. [PMID: 20055812 DOI: 10.1111/j.1600-6143.2009.02951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Because the vagus nerve is implicated in control of inflammation, we investigated if brain death (BD) causes impairment of the parasympathetic nervous system, thereby contributing to inflammation. BD was induced in rats. Anaesthetised ventilated rats (NBD) served as control. Heart rate variability (HRV) was assessed by ECG. The vagus nerve was electrically stimulated (BD + STIM) during BD. Intestine, kidney, heart and liver were recovered after 6 hours. Affymetrix chip-analysis was performed on intestinal RNA. Quantitative PCR was performed on all organs. Serum was collected to assess TNFalpha concentrations. Renal transplantations were performed to address the influence of vagus nerve stimulation on graft outcome. HRV was significantly lower in BD animals. Vagus nerve stimulation inhibited the increase in serum TNFalpha concentrations and resulted in down-regulation of a multiplicity of pro-inflammatory genes in intestinal tissue. In renal tissue vagal stimulation significantly decreased the expression of E-selectin, IL1beta and ITGA6. Renal function was significantly better in recipients that received a graft from a BD + STIM donor. Our study demonstrates impairment of the parasympathetic nervous system during BD and inhibition of serum TNFalpha through vagal stimulation. Vagus nerve stimulation variably affected gene expression in donor organs and improved renal function in recipients.
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Affiliation(s)
- S Hoeger
- Department of Medicine V (Nephrology/Endocrinology/Rheumatology), University Medical Center Mannheim, University of Heidelberg, and Clinic for Anaesthesiology and Intensive Care Medicine, University Hospital of Mannheim, Mannheim, Germany.
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Song H, Bergstrasser C, Rafat N, Höger S, Schmidt M, Endres N, Goebeler M, Hillebrands JL, Brigelius-Flohé R, Banning A, Beck G, Loesel R, Yard BA. The carbon monoxide releasing molecule (CORM-3) inhibits expression of vascular cell adhesion molecule-1 and E-selectin independently of haem oxygenase-1 expression. Br J Pharmacol 2009; 157:769-80. [PMID: 19422386 DOI: 10.1111/j.1476-5381.2009.00215.x] [Citation(s) in RCA: 35] [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: 01/09/2023] Open
Abstract
BACKGROUND AND PURPOSE Although carbon monoxide (CO) can modulate inflammatory processes, the influence of CO on adhesion molecules is less clear. This might be due to the limited amount of CO generated by haem degradation. We therefore tested the ability of a CO releasing molecule (CORM-3), used in supra-physiological concentrations, to modulate the expression of vascular cell adhesion molecule (VCAM)-1 and E-selectin on endothelial cells and the mechanism(s) involved. EXPERIMENTAL APPROACH Human umbilical vein endothelial cells (HUVECs) were stimulated with tumour necrosis factor (TNF)-alpha in the presence or absence of CORM-3. The influence of CORM-3 on VCAM-1 and E-selectin expression and the nuclear factor (NF)-kappaB pathway was assessed by flow cytometry, Western blotting and electrophoretic mobility shift assay. KEY RESULTS CORM-3 inhibited the expression of VCAM-1 and E-selectin on TNF-alpha-stimulated HUVEC. VCAM-1 expression was also inhibited when CORM-3 was added 24 h after TNF-alpha stimulation or when TNF-alpha was removed. This was paralleled by deactivation of NF-kappaB and a reduction in VCAM-1 mRNA. Although TNF-alpha removal was more effective in this regard, VCAM-1 protein was down-regulated more rapidly when CORM-3 was added. CORM-3 induced haem oxygenase-1 (HO-1) in a dose- and time-dependent manner, mediated by the transcription factor, Nrf2. CORM-3 was still able to down-regulate VCAM-1 expression in HUVEC transfected with siRNA for HO-1 or Nrf2. CONCLUSIONS AND IMPLICATIONS Down-regulation of VCAM and E-selectin expression induced by CORM-3 was independent of HO-1 up-regulation and was predominantly due to inhibition of sustained NF-kappaB activation.
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Affiliation(s)
- H Song
- Vth Medical Department, University Hospital Mannheim, Mannheim, Germany
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Yamadera M, Yokoe M, Beck G, Mihara M, Oe H, Yamamoto Y, Sakoda S. Amelioration of white-matter lesions in a patient with Fabry disease. J Neurol Sci 2009; 279:118-20. [DOI: 10.1016/j.jns.2008.12.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2008] [Revised: 12/21/2008] [Accepted: 12/23/2008] [Indexed: 10/21/2022]
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Schneider E, Gleixner A, Hänel R, Leyhe Y, Kleinschmidt C, Beck G, Steinberg M, Denk B, Gassner D. Technical performance of the first fully automated assays for human soluble fms-like tyrosine kinase 1 and human placental growth factor. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1216308] [Citation(s) in RCA: 9] [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] [Indexed: 10/21/2022]
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Hasenberg T, Keese M, Längle F, Reibenwein B, Schindler K, Herold A, Beck G, Post S, Jauch KW, Spies C, Schwenk W, Shang E. 'Fast-track' colonic surgery in Austria and Germany--results from the survey on patterns in current perioperative practice. Colorectal Dis 2009; 11:162-7. [PMID: 18462237 DOI: 10.1111/j.1463-1318.2008.01559.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [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: 12/13/2022]
Abstract
OBJECTIVE 'Fast-track' rehabilitation has been shown to accelerate recovery, reduce general morbidity and decrease hospital stay after elective colonic surgery. Despite this evidence, there is no information on the acceptance and utilization of these concepts among the entirety of Austrian and German surgeons. METHOD In 2006, a questionnaire concerning perioperative routines in elective, open colonic resection was sent to the chief surgeons of 1270 German and 120 Austrian surgical centres. RESULTS The response rate was 63% in Austria (76 centres) and 30% in Germany (385 centres). Mechanical bowel preparation is used by the majority (Austria, 91%; Germany, 94%); the vertical incision is the standard method of approach to the abdomen in Austria (79%) and Germany (83%), nasogastric decompression tubes are rarely used, one-third of the questioned surgeons in both countries use intra-abdominal drains. Half of the surgical centres allow the intake of clear fluids on the day of surgery and one-fifth offer solid food on that day. Epidural analgesia is used in three-fourths of the institutions. CONCLUSION Although there is an evident benefit of fast-track management, the survey shows that they are not yet widely used as a routine in Austria and Germany.
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Affiliation(s)
- T Hasenberg
- Department of Surgery, University Hospital Mannheim, Ruprecht Karls University of Heidelberg, Mannheim, Germany.
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Kukuk GM, Hadizadeh DR, Gieseke J, Bergener J, Beck G, Geerts L, Mürtz P, Boström A, Urbach H, Schild HH, Willinek WA. 4D-MRA in combination with selective arterial spin labelling (sASL) for characterization of arteriovenous malformations at 3 T. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0028-1124053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hohenberger P, Nowak K, Rafat N, Belle S, Hanusch C, Manegold C, Weiss C, Beck G. The level of circulating endothelial progenitor cells is increased in human lung cancer patients and correlates with the progression of the disease. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.22055] [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: 11/20/2022] Open
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Nowak K, Rafat N, Belle S, Hanusch C, Manegold C, Hohenberger P, Beck G. Endotheliale Progenitorzellen im Vollblut von Lungenkarzinompatienten. Pneumologie 2008. [DOI: 10.1055/s-2008-1074181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Song H, Feng Y, Hoeger S, Beck G, Hanusch C, Goettmann U, Leuvenink HGD, Ploeg RJ, Hillebrands J, Yard BA. High mobility group box 1 and adenosine are both released by endothelial cells during hypothermic preservation. Clin Exp Immunol 2008; 152:311-9. [PMID: 18341609 DOI: 10.1111/j.1365-2249.2008.03643.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hypothermic preservation of solid allografts causes profound damage of vascular endothelial cells. This, in turn, might activate innate immunity. In the present study we employed an in vitro model to study to what extent supernatants of damaged endothelial cells are able to activate innate immunity and to study the nature of these signals. The expression of high mobility group box 1 (HMGB1) and adhesion molecules on human umbilical vein endothelial cell was studied by immunofluorescence, fluorescence activated cell sorter and Western blotting. Cytokine production was performed by enzyme-linked immunosorbent assay. HMGB1 expression was lost completely in endothelial cells after hypothermic preservation. This was associated with cell damage as it occurred only in untreated endothelial cell but not in cells rendered resistant to hypothermia-mediated damage by dopamine treatment. Only supernatants from hypothermia susceptible cells up-regulated the expression of interleukin (IL)-8 and adhesion molecules in cultured endothelial cells in an HMGB1-dependent manner. In whole blood assays, both supernatants of hypothermia susceptible and resistant cells inhibited tumour necrosis factor (TNF)-alpha production concomitantly with an increased IL-10 secretion. The activity of the supernatants was already found after 6 h of hypothermic preservation, and paralleled the decrease in intracellular adenosine triphosphate (ATP) levels. Modulation of TNF-alpha and IL-10 production by these supernatants was abrogated completely by prior treatment with adenosine deaminase and was similar to the response of an A2R agonist. Our study demonstrates that both HMGB1 and adenosine are released during hypothermic preservation. While release of HMGB1 is caused by cell damage, release of adenosine seems to be related to ATP hydrolysis, occurring in both susceptible and resistant cells.
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Affiliation(s)
- H Song
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Medical Clinic, University Hospital Mannheim, Germany, and School of Dentistry, Shandong University, Jinan, China
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Ivancevic MK, Londy F, Rohrer S, Geerts L, Beck G, Chenevert TL. 3T pulmonary MR angiography. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1052582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hadizadeh DR, Gieseke J, Kukuk G, Geerts L, Beck G, Schild HH, Willinek WA. Highly accelerated 4D MRA with keyhole (4D TRAK) and additional view-sharing at 3.0T. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1052587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hadizadeh DR, Gieseke J, Kukuk G, Geerts L, Beck G, Urbach H, Schild HH, Willinek WA. Räumlich und zeitlich hochauflösende 4D MRA mit CENTRA-Keyhole (4D TRAK) und zusätzlichem View-Sharing bei 3,0T. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nowak K, Rafat N, Belle S, Hanusch C, Hohenberger P, Beck G. Endotheliale Progenitorzellen (EPC) im Vollblut von Bronchialkarzinompatienten. Pneumologie 2007. [DOI: 10.1055/s-2007-993794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nowak K, Hanusch C, Kölbel HC, Schwarzbach M, Post S, Beck G, Gebhard MM, Metzger R, Hohenberger P. Alterations of tumor and normal tissue of human lung cancer resection specimens after isolation perfusion. J Physiol Pharmacol 2007; 58 Suppl 5:501-511. [PMID: 18204164] [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: 05/25/2023]
Abstract
The isolation perfusion model, including transbronchial ventilation of human lung, offers the possibility to study pharmacological interactions under physiological conditions. In view of the increasing importance of targeted therapy of lung diseases, this model of perfusion might attract major interest, particularly, in lung cancer. Our study investigated physiological, histological, and immunohistochemical alterations of lung and tumor tissue during isolated perfusion of lung lobectomy specimens to explore potential limitations of this model. Right after resection, 16 human lung resection specimens for primary lung cancer were isolated, ventilated, and perfused under physiological conditions with a modified Krebs-Henseleit solution over a period of 10, 60, 90, 120, and 240 min. Perfusion pressure, pH, lung weight gain, and histological edema formation were measured continuously before and during perfusion. After perfusion, lung and tumor tissue was investigated by hematoxylin-and-eosin stained sections. Immunohistochemistry of NADH, PECAM-1, angiotensin-converting-enzyme and NF-kappabeta were performed to determine lung tissue viability and changes at the endothelial layer. We found that perfusion up to 120 min could be performed with completely stable physiological conditions. Beyond that time span, edema formation and weight gain of the resection specimen started and were followed by an increase in inspiratory pressure and pulmonary artery pressure. Perfusion of more than 4 h led to a significant edema formation in lung tissue accompanied by loss of viability and significant histological alterations. We conclude that isolated ventilation and perfusion of human lung resections within the setup chosen is reliable for pharmacological studies up to a period of 120 min. Thereafter, edema formation and endothelial damage develop and limit the interpretation and reliability of drug delivery studies.
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Affiliation(s)
- K Nowak
- Department of Surgery, Faculty of Medicine Mannheim, University of Heidelberg, Germany.
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Beck G. Finding a sister lost to mental illness. CMAJ 2007. [DOI: 10.1503/cmaj.061305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Nowak K, Kölbel H, Metzger RP, Hanusch C, Post S, Beck G, Gebhard MM, Danilov SM, Hohenberger P. Endothelgerichteter Therapieansatz mit Anti-ACE-Antikörpern an der isoliert ventilierten und perfundierten humanen Resektatlunge. Pneumologie 2006. [DOI: 10.1055/s-2006-958894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nowak K, Rafat N, Belle S, Hanusch C, Hohenberger P, Beck G. Die Rolle endothelialer Progenitorzellen (EPC) beim Bronchialkarzinom. Pneumologie 2006. [DOI: 10.1055/s-2006-958893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Beck S, Beck G, Ostendorf T, Floege J, Lambeau G, Nevalainen T, Radeke HH, Gurrieri S, Haas U, Thorwart B, Pfeilschifter J, Kaszkin M. Upregulation of group IB secreted phospholipase A(2) and its M-type receptor in rat ANTI-THY-1 glomerulonephritis. Kidney Int 2006; 70:1251-60. [PMID: 16900094 DOI: 10.1038/sj.ki.5001664] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 12/14/2022]
Abstract
Treatment of rat glomerular mesangial cell (GMC) cultures with pancreatic secreted phospholipase A(2) (sPLA(2)-IB) results in an enhanced expression of sPLA(2)-IIA and COX-2, possibly via binding to its specific M-type sPLA(2) receptor. In the current study, we have investigated the expression and regulation of sPLA(2)-IB and its receptor during glomerulonephritis (GN). In vivo we used the well-established rat model of anti-Thy 1.1 GN (anti-Thy 1.1-GN) to study the expression of sPLA(2)-IB and the M-type sPLA(2) receptor by immunohistochemistry. In addition, in vitro we determined the interkeukin (IL)-1beta-regulated mRNA and protein expression in primary rat glomerular mesangial and endothelial cells as well as in rat peripheral blood leukocytes (PBLs). Shortly after induction of anti-Thy 1.1-GN, sPLA(2)-IB expression was markedly upregulated in the kidney at 6-24 h. Within glomeruli, the strongest sPLA(2)-IB protein expression was detected on infiltrated granulocytes and monocytes. However, at the same time, the M-type receptor was also markedly upregulated on resident glomerular cells. In vitro, the most prominent cytokine-stimulated secretion of sPLA(2)-IB was observed in monocytes isolated from rat PBLs. Treating glomerular endothelial cells (GECs) with cytokines elicited only weak sPLA(2)-IB expression, but treatment of these cells with exogenous sPLA(2)-IB resulted in a marked expression of the endogenous sPLA(2)-IB. Mesangial cells did not express sPLA(2)-IB at all. The M-type sPLA(2) receptor protein was markedly upregulated on cytokine-stimulated mesangial and endothelial cells as well as on lymphocytes and granulocytes. During anti-Thy 1.1 rat GN, sPLA(2)-IB and the M-type sPLA(2) receptor are induced as primary downstream genes stimulated by inflammatory cytokines. Subsequently, both sPLA(2)-IB and the M-type sPLA(2) receptor are involved in the autocrine and paracrine amplification of the inflammatory process in different resident and infiltrating cells.
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Blotting, Western
- Cells, Cultured
- Cyclooxygenase 2/metabolism
- Cytokines/pharmacology
- Data Interpretation, Statistical
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Fluorescent Antibody Technique
- Glomerular Mesangium/cytology
- Glomerular Mesangium/metabolism
- Glomerulonephritis/genetics
- Glomerulonephritis/immunology
- Glomerulonephritis/metabolism
- Glomerulonephritis, Membranoproliferative/metabolism
- Immunoglobulin G/immunology
- Immunohistochemistry
- Inflammation/immunology
- Inflammation/metabolism
- Interleukin-1beta/pharmacology
- Isoantibodies
- Kidney/cytology
- Kidney/immunology
- Kidney/metabolism
- Kidney Glomerulus/cytology
- Kidney Glomerulus/metabolism
- Leukocytes/immunology
- Leukocytes/metabolism
- Male
- Mesangial Cells/drug effects
- Mesangial Cells/metabolism
- Mice
- Pancreas/enzymology
- Phospholipases A/genetics
- Phospholipases A/metabolism
- Phospholipases A/pharmacology
- RNA, Messenger/analysis
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Rabbits
- Rats
- Rats, Wistar
- Receptors, Cell Surface/drug effects
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Receptors, Phospholipase A2
- Reverse Transcriptase Polymerase Chain Reaction
- Time Factors
- Up-Regulation
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Affiliation(s)
- S Beck
- Pharmazentrum frankfurt, University Hospital, JW Goethe-University, Frankfurt, Germany.
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Beck G, Hanusch C, Brinkkoetter P, Rafat N, Schulte J, van Ackern K, Yard B. Effekte von Dopamin auf die zelluläre und humorale Immunantwort von Patienten mit Sepsis. Anaesthesist 2005; 54:1012-20. [PMID: 15997388 DOI: 10.1007/s00101-005-0887-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In vitro and in vivo studies have demonstrated that apart from its hemodynamic action dopamine can modulate immune responses. Dopamine reduces the synthesis of proinflammatory and induces the synthesis of anti-inflammatory mediators. Dopamine inhibits neurohormone synthesis, lymphocyte proliferation and platelet aggregation. It reduces the phagocytic activity of neutrophils and induces apoptosis. Particularly with regard to sepsis, where high serum dopamine levels are reached by enhanced endogenous production, exogenous application and impaired clearance, this immunomodulation may have a clinical impact. This review summarizes dopamine-mediated immunomodulating effects to advance the knowledge regarding dopamine as an immune regulator under septic conditions.
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Affiliation(s)
- G Beck
- Institut für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum, Mannheim.
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Beck G, Kawano T, Naba I, Nishimura T, Sawada J, Hazama T. A case with a 120 base pair insertional mutation in the prion protein gene: the first case in Japan. J Neurol Neurosurg Psychiatry 2005; 76:756-7. [PMID: 15834045 PMCID: PMC1739617 DOI: 10.1136/jnnp.2004.048553] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Genzwuerker HV, Tsagogiorgas C, Hinkelbein J, Beck G. Airway management with the Laryngeal Tube Suction II in a patient with cervical spine injury. Resuscitation 2005; 65:231-3. [PMID: 15866406 DOI: 10.1016/j.resuscitation.2004.11.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/16/2004] [Accepted: 11/23/2004] [Indexed: 11/23/2022]
Abstract
Supraglottic airway devices may offer alternative strategies for securing the airway in patients with cervical spine injuries. A case of airway management with the LTS II, a modified version of the laryngeal tube suction, in a patient with a paramedian atlas fracture scheduled for decompression of a haematoma on the forehead is described. Device insertion was successful in the first attempt and a gastric tube was inserted without problems. Ventilation was uneventful, no complaints were stated after surgery.
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Affiliation(s)
- Harald V Genzwuerker
- Institute of Anaesthesiology and Intensive Care Medicine, University Hospital Mannheim, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
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Hackenbroch M, Meyer C, Beck G, Nehrke K, Gieseke J, Yang A, Tiemann K, Schmitz C, Schild H, Sommer T. 3D Motion Adapted Gating: Eine neue Navigatortechnik zur Verkürzung der Messzeit bei der MR-Koronarangiographie. ROFO-FORTSCHR RONTG 2005; 177:350-7. [PMID: 15719296 DOI: 10.1055/s-2005-857882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE A major problem of free breathing coronary MR angiography (MRA) with respiratory navigator gating is low navigator efficiency and prolonged scan time due to irregular breathing patterns. 3D motion adapted gating (MAG) is a new adaptive navigator technique, which adapts in real time to changes of the end-expiratory position of diaphragm. This study evaluates the influence of 3D MAG on coronary MRA. METHODS AND MATERIALS In 3D MAG, two additional gating windows are grouped around the conventional window. Additionally, each gating window is divided into three bands assigned to different portions of the k-space. The scan is terminated when three consecutive bands are filled and one complete image data set is collected. Free breathing navigator-gated coronary MRA was performed on 48 patients with suspected coronary artery disease. In random order, each patient underwent an ECG-gated, a 3D segmented k-space gradient echo sequence using 3D MAG and a conventional navigator technique. The coronary MRA was evaluated and compared using the following parameters: 1. navigator efficiency and scan time; 2. visualized coronary artery length; 3. qualitative assessment of image quality; and 4. detection of stenoses > 50 % in comparison with catheter angiography. RESULTS Coronary MRA with 3D MAG had a significant increase in the average navigator efficiency (46 % +/- 12 % vs. 38 % +/- 12 %, p < 0.05), resulting in a significantly shorter scan time (mean: 18 % +/- 4 %, p < 0.05) for coronary MRA with 3D MAG compared to conventional navigator technique. Scans with and without 3D MAG had no significant differences in the continuously visualized vessel lengths, in the assessed image quality and in the sensitivity and specificity (83 % and 89 % vs. 83 % and 88 %, p > 0.05) of detecting coronary artery stenoses > 50 %. CONCLUSION The 3D MAG technique improves the navigator efficiency and significantly (p < 0.05) shortens the scan time of navigator gated coronary MRA while maintaining image quality and diagnostic accuracy in the detection of coronary artery stenoses.
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