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Zeller J, Cheung Tung Shing KS, Nero TL, McFadyen JD, Krippner G, Bogner B, Kreuzaler S, Kiefer J, Horner VK, Braig D, Danish H, Baratchi S, Fricke M, Wang X, Kather MG, Kammerer B, Woollard KJ, Sharma P, Morton CJ, Pietersz G, Parker MW, Peter K, Eisenhardt SU. A novel phosphocholine-mimetic inhibits a pro-inflammatory conformational change in C-reactive protein. EMBO Mol Med 2022; 15:e16236. [PMID: 36468184 PMCID: PMC9832874 DOI: 10.15252/emmm.202216236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 10/29/2022] [Accepted: 11/06/2022] [Indexed: 12/09/2022] Open
Abstract
C-reactive protein (CRP) is an early-stage acute phase protein and highly upregulated in response to inflammatory reactions. We recently identified a novel mechanism that leads to a conformational change from the native, functionally relatively inert, pentameric CRP (pCRP) structure to a pentameric CRP intermediate (pCRP*) and ultimately to the monomeric CRP (mCRP) form, both exhibiting highly pro-inflammatory effects. This transition in the inflammatory profile of CRP is mediated by binding of pCRP to activated/damaged cell membranes via exposed phosphocholine lipid head groups. We designed a tool compound as a low molecular weight CRP inhibitor using the structure of phosphocholine as a template. X-ray crystallography revealed specific binding to the phosphocholine binding pockets of pCRP. We provide in vitro and in vivo proof-of-concept data demonstrating that the low molecular weight tool compound inhibits CRP-driven exacerbation of local inflammatory responses, while potentially preserving pathogen-defense functions of CRP. The inhibition of the conformational change generating pro-inflammatory CRP isoforms via phosphocholine-mimicking compounds represents a promising, potentially broadly applicable anti-inflammatory therapy.
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Affiliation(s)
- Johannes Zeller
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany,Baker Heart and Diabetes InstituteMelbourneVic.Australia
| | - Karen S Cheung Tung Shing
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology InstituteThe University of MelbourneParkvilleVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia
| | - Tracy L Nero
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology InstituteThe University of MelbourneParkvilleVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia,ACRF Rational Drug Discovery CentreSt. Vincent's Institute of Medical ResearchFitzroyVic.Australia
| | - James D McFadyen
- Baker Heart and Diabetes InstituteMelbourneVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia
| | - Guy Krippner
- Baker Heart and Diabetes InstituteMelbourneVic.Australia
| | - Balázs Bogner
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
| | - Sheena Kreuzaler
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
| | - Jurij Kiefer
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
| | - Verena K Horner
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
| | - David Braig
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
| | - Habiba Danish
- Baker Heart and Diabetes InstituteMelbourneVic.Australia,School of Health and Biomedical SciencesRMIT UniversityMelbourneVic.Australia
| | - Sara Baratchi
- School of Health and Biomedical SciencesRMIT UniversityMelbourneVic.Australia
| | - Mark Fricke
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
| | - Xiaowei Wang
- Baker Heart and Diabetes InstituteMelbourneVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia
| | - Michel G Kather
- Centre for Integrative Signalling Analysis CISAUniversity of FreiburgFreiburgGermany
| | - Bernd Kammerer
- Centre for Integrative Signalling Analysis CISAUniversity of FreiburgFreiburgGermany
| | | | - Prerna Sharma
- Baker Heart and Diabetes InstituteMelbourneVic.Australia
| | - Craig J Morton
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology InstituteThe University of MelbourneParkvilleVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia
| | - Geoffrey Pietersz
- Baker Heart and Diabetes InstituteMelbourneVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia
| | - Michael W Parker
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology InstituteThe University of MelbourneParkvilleVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia,ACRF Rational Drug Discovery CentreSt. Vincent's Institute of Medical ResearchFitzroyVic.Australia
| | - Karlheinz Peter
- Baker Heart and Diabetes InstituteMelbourneVic.Australia,Department of Cardiometabolic HealthThe University of MelbourneParkvilleVic.Australia
| | - Steffen U Eisenhardt
- Department of Plastic and Hand Surgery, University of Freiburg Medical CentreMedical Faculty of the University of FreiburgFreiburgGermany
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Zeller J, Bogner B, Kiefer J, Braig D, Winninger O, Fricke M, Karasu E, Peter K, Huber-Lang M, Eisenhardt SU. CRP Enhances the Innate Killing Mechanisms Phagocytosis and ROS Formation in a Conformation and Complement-Dependent Manner. Front Immunol 2021; 12:721887. [PMID: 34447388 PMCID: PMC8383111 DOI: 10.3389/fimmu.2021.721887] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 07/21/2021] [Indexed: 12/16/2022] Open
Abstract
Phagocytosis and the formation of reactive oxygen species (ROS) in phagocytic leukocytes are an effective killing mechanism of the innate host defense. These cellular processes of innate immunity function in a complex interplay with humoral factors. C-reactive protein (CRP) in its activated, monomeric isoform (mCRP) has been shown to activate immune cells via the classical complement pathway. We investigated the complement-dependent effects of monomeric CRP (mCRP) on neutrophils and monocyte subtypes using complement-specific inhibitors by both flow cytometry and confocal fluorescence microscopy. We demonstrate that CRP-induced ROS generation is a conformation-specific and complement-dependent process in leukocyte subsets with classical monocytes as the primary source of ROS amongst human monocyte subsets. Elucidation of this complex interplay of CRP and complement in inflammation pathophysiology might help to improve anti-inflammatory therapeutic strategies.
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Affiliation(s)
- Johannes Zeller
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
| | - Balázs Bogner
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
| | - Jurij Kiefer
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
| | - David Braig
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany.,Division of Hand, Plastic and Aesthetic Surgery, University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany
| | - Oscar Winninger
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
| | - Mark Fricke
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
| | - Ebru Karasu
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Cardiometabolic Health, University of Melbourne, Melbourne, VIC, Australia
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany
| | - Steffen Ulrich Eisenhardt
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
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Kollar B, Schneider L, Horner VK, Zeller J, Fricke M, Brugger Z, Gentz M, Kiefer J, Eisenhardt SU. Artificial Intelligence-Driven Video Analysis for Novel Outcome Measures After Smile Reanimation Surgery. Facial Plast Surg Aesthet Med 2021; 24:117-123. [PMID: 34166082 DOI: 10.1089/fpsam.2020.0556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: Since facial paralysis is a dynamic condition, the analysis of still photographs is not sufficient for measurement of facial reanimation outcomes. This study aimed at evaluating an artificial intelligence (AI)-driven software as a novel video assessment tool for smile reanimation surgery and at comparing it with the Terzis score. Methods: Patients with facial paralysis undergoing smile reanimation surgery between January 2008 and April 2020 were eligible for this retrospective study. Inclusion criteria were at least 6 months of follow-up and availability of both pre- and post-operative video documentation. The software output was given as intensity score (IS) values between 0 and 1, representing emotions/action units (AUs) that are absent or fully present, respectively. Results: During the study period, 240 patients underwent facial reanimation surgery, of whom 63 patients met the inclusion criteria. Postoperatively, the median IS of the happiness emotion and lip corner puller AU increased significantly (p < 0.001). There was a positive correlation of Terzis score with the IS of happiness emotion (r = 0.8) and lip corner puller AU (r = 0.74). Conclusions: The novel AI-driven video analysis is strongly correlated with the Terzis score and shows promise for objective functional outcome evaluation after smile reanimation surgery.
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Affiliation(s)
- Branislav Kollar
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Laura Schneider
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Verena K Horner
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Johannes Zeller
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Mark Fricke
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Zacharias Brugger
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Michael Gentz
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Jurij Kiefer
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
| | - Steffen U Eisenhardt
- Department of Plastic and Hand Surgery, University of Freiburg Medical Center, Medical Faculty of the University of Freiburg; Freiburg, Germany
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Kiefer J, Zeller J, Bogner B, Hörbrand IA, Lang F, Deiss E, Winninger O, Fricke M, Kreuzaler S, Smudde E, Huber-Lang M, Peter K, Woollard KJ, Eisenhardt SU. An Unbiased Flow Cytometry-Based Approach to Assess Subset-Specific Circulating Monocyte Activation and Cytokine Profile in Whole Blood. Front Immunol 2021; 12:641224. [PMID: 33981302 PMCID: PMC8108699 DOI: 10.3389/fimmu.2021.641224] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/12/2021] [Indexed: 12/12/2022] Open
Abstract
Monocytes are the third most frequent type of leukocytes in humans, linking innate and adaptive immunity and are critical drivers in many inflammatory diseases. Based on the differential expression of surface antigens, three monocytic subpopulations have been suggested in humans and two in rats with varying inflammatory and phenotype characteristics. Potential intervention strategies that aim to manipulate these cells require an in-depth understanding of monocyte behavior under different conditions. However, monocytes are highly sensitive to their specific activation state and expression of surface markers, which can change during cell isolation and purification. Thus, there is an urgent need for an unbiased functional analysis of activation in monocyte subtypes, which is not affected by the isolation procedure. Here, we present a flow cytometry-based protocol for evaluating subset-specific activation and cytokine expression of circulating blood monocytes both in humans and rats using small whole blood samples (50 - 100 μL). In contrast to previously described monocyte isolation and flow cytometry visualization methods, the presented approach virtually leaves monocyte subsets in a resting state or fixes them in their current state and allows for an unbiased functional endpoint analysis without prior cell isolation. This protocol is a comprehensive tool for studying differential monocyte regulation in the inflammatory and allogeneic immune response in vitro and vivo.
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Affiliation(s)
- Jurij Kiefer
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Johannes Zeller
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Balázs Bogner
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Isabel A Hörbrand
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Friederike Lang
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Emil Deiss
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Oscar Winninger
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Mark Fricke
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Sheena Kreuzaler
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Eva Smudde
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Markus Huber-Lang
- Department of Traumatology, Hand, Plastic, and Reconstructive Surgery, Center of Surgery, University of Ulm, Ulm, Germany
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology, Department of Cardiometabolic Health, Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Kevin J Woollard
- Centre of Inflammatory Disease, Imperial College London, London, United Kingdom
| | - Steffen U Eisenhardt
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
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Smirnova I, Gurikov P, Weinrich D, Movahhed S, Vogelsang V, Fricke M, Lölsberg W. Entwicklung organischer Aerogele: der Weg von der Akademia in die Praxis. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- I. Smirnova
- TU Hamburg; Institut für Termische Verfahrenstechnik; Eissendorferstraße 38 21073 Hamburg Deutschland
| | - P. Gurikov
- TU Hamburg; Institut für Termische Verfahrenstechnik; Eissendorferstraße 38 21073 Hamburg Deutschland
| | - D. Weinrich
- BASF Polyurethanes; Lemförde; Elastogranstraße 60 49448 Lemförde Deutschland
| | - S. Movahhed
- BASF Polyurethanes; Lemförde; Elastogranstraße 60 49448 Lemförde Deutschland
| | - V. Vogelsang
- BASF Polyurethanes; Lemförde; Elastogranstraße 60 49448 Lemförde Deutschland
| | - M. Fricke
- BASF Polyurethanes; Lemförde; Elastogranstraße 60 49448 Lemförde Deutschland
| | - W. Lölsberg
- BASF SE; Marketing Construction - High Performance Insulation Materials; Carl-Bosch-Straße 38 67056 Ludwigshafen Deutschland
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Abstract
Coronaviruses have exceptionally large RNA genomes of approximately 30 kilobases. Genome replication and transcription is mediated by a multisubunit protein complex comprised of more than a dozen virus-encoded proteins. The protein complex is thought to bind specific cis-acting RNA elements primarily located in the 5′- and 3′-terminal genome regions and upstream of the open reading frames located in the 3′-proximal one-third of the genome. Here, we review our current understanding of coronavirus cis-acting RNA elements, focusing on elements required for genome replication and packaging. Recent bioinformatic, biochemical, and genetic studies suggest a previously unknown level of conservation of cis-acting RNA structures among different coronavirus genera and, in some cases, even beyond genus boundaries. Also, there is increasing evidence to suggest that individual cis-acting elements may be part of higher-order RNA structures involving long-range and dynamic RNA–RNA interactions between RNA structural elements separated by thousands of nucleotides in the viral genome. We discuss the structural and functional features of these cis-acting RNA elements and their specific functions in coronavirus RNA synthesis.
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Affiliation(s)
- R Madhugiri
- Institute of Medical Virology, Justus Liebig University Giessen, Giessen, Germany
| | - M Fricke
- Faculty of Mathematics and Computer Science, Friedrich Schiller University Jena, Jena, Germany
| | - M Marz
- Faculty of Mathematics and Computer Science, Friedrich Schiller University Jena, Jena, Germany; FLI Leibniz Institute for Age Research, Jena, Germany
| | - J Ziebuhr
- Institute of Medical Virology, Justus Liebig University Giessen, Giessen, Germany.
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Fricke M, Voigt A, Sundmacher K. Shaping without Touching: ZnO Nanoparticle Production in Miniemulsions. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Harvey E, Fricke M, Pereira G. Facilitating a student-led code of ethics: a framework for educators. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3347] [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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Abstract
A novel process, carbon dioxide induced gelation, opens new pathways towards hydrogels and can be coupled with supercritical drying to produce aerogels.
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Affiliation(s)
- P. Gurikov
- Hamburg University of Technology
- Institute of Thermal Separation Processes
- 21073 Hamburg
- Germany
| | - S. P. Raman
- Hamburg University of Technology
- Institute of Thermal Separation Processes
- 21073 Hamburg
- Germany
| | - D. Weinrich
- BASF Polyurethanes GmbH
- 49448 Lemfoerde
- Germany
| | - M. Fricke
- BASF Polyurethanes GmbH
- 49448 Lemfoerde
- Germany
| | - I. Smirnova
- Hamburg University of Technology
- Institute of Thermal Separation Processes
- 21073 Hamburg
- Germany
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10
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Böhrnsen F, Fricke M, Sander C, Leha A, Schliephake H, Kramer FJ. Interactions of human MSC with head and neck squamous cell carcinoma cell line PCI-13 reduce markers of epithelia-mesenchymal transition. Clin Oral Investig 2014; 19:1121-8. [DOI: 10.1007/s00784-014-1338-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 10/14/2014] [Indexed: 11/28/2022]
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Fricke M. Gekreuzte Nierendystopie mit retrovasal verlaufendem Ureter. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1229969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Fricke M. CT des Herzens – Patientenvorbereitung und Durchführung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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MacDonald L, Fricke M, Wener P, Nelson M, Schönwetter DJ, Anderson JE, The Manitoba Initiative For Interpr. De novo learning in creating a graduate studies course on Interprofessional Education for Collaborative Patient-Centred Practice (IECPCP). J Interprof Care 2009; 23:195-7. [DOI: 10.1080/13561820802293071] [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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15
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Sundmacher K, Fricke M, Niemann B, Voigt A. Synthese maßgeschneiderter Feststoffpartikel in Emulsionen: Status und Entwicklungstrends. CHEM-ING-TECH 2007. [DOI: 10.1002/cite.200750224] [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: 11/10/2022]
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Maix RK, Bagnato V, Fricke M, Heyn K, Kluck T, Lange F, Riße K, Sborchia C, Valle N. Design, Production and QA Test Results of the NbTi CIC Conductors for the W7-X Magnet System. ACTA ACUST UNITED AC 2006. [DOI: 10.1088/1742-6596/43/1/184] [Citation(s) in RCA: 12] [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: 11/11/2022]
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Hönig J, Fricke M. [Soft tissue enhancement with injectable fillers for correction of age related folds and wrinkles]. Zentralbl Chir 2005; 130:514-25. [PMID: 16382398 DOI: 10.1055/s-2005-918196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Injectable fillers for facial soft tissue enhancement have been developed and used for decades for the correction of age related folds and wrinkles. Many of the disadvantages of xenogenic and prior exogenous materials have been overcome with the advent of autologous and synthetic alternative materials. Autologous and synthetic injectable fillers herald a new era in the treatment of the aging face. Therefore this article will give an in-depth look at the implant choice, surgical approach, and possible complications and will provide a review of current injectable fillers for age related facial soft tissue augmentation.
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Affiliation(s)
- J Hönig
- Abt. für Gesichts- und Plastische-Chirurgie, Martin Fricke Universitätsklinikum Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany.
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Fricke M, Achtemichuk M, Cooper J, Martin B, Macaulay A, Durcan A. Development of a community-based medical rehabilitation programme in the Kivalliq Region of Nunavut, Canada. Int J Circumpolar Health 2005; 63 Suppl 2:101-6. [PMID: 15736631 DOI: 10.3402/ijch.v63i0.17867] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 11/14/2022] Open
Abstract
OBJECTIVE In 2000, the University of Manitoba and the Department of Health and Social Services of Nunavut, Canada, jointly embarked upon the development of a community-based medical rehabilitation programme in the Kivalliq Region of Canada's central Arctic. Two main objectives were identified in moving forward with the implementation of a rehabilitation programme. Firstly, to conduct a region wide community needs assessment for rehabilitation services for all age groups of all residents of the Kivalliq Region of Nunavut. Secondly, to provide information from which a community-based rehabilitation therapy programme could be developed. METHODS A community needs assessment of the Kivalliq Region was carried out to guide the implementation of physiotherapy, occupational therapy and speech language pathology services. RESULTS There are now two physiotherapists, one occupational therapist, and one speech language pathologist providing rehabilitation services to the residents of the Kivalliq Region of Nunavut. The results of this needs assessment, the challenges and successes of this medical rehabilitation programme are discussed. CONCLUSION The total population of the service area is approximately 8,000 people, the significant majority of whom self-report as Inuit, and are widely dispersed over eight communities. Despite the challenges in terms of culture, geography and recruitment of introducing a rehabilitation program in Canada's north, the residents of the Kivalliq Region now have a viable model of receiving rehabilitative intervention in their home communities.
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Affiliation(s)
- M Fricke
- JA Hildes Northern Medical Unit, University of Manitoba, Winnipeg, Canada.
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Loughery S, Macaulay A, Fricke M, Durcan A, Cooper J. Speech language pathology services in Kivalliq Region of Nunavut, Canada. Int J Circumpolar Health 2005; 63 Suppl 2:120-3. [PMID: 15736634 DOI: 10.3402/ijch.v63i0.17870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES To provide a review of Speech Language Pathology services in the Kivalliq Region of Nunavut, Canada, since its inception. Referral sources, reasons for referral and discharge will also be shown for seven of the communities in the Kivalliq Region. STUDY DESIGN A quantitative and qualitative survey of the services received for the 26-month time period from January 2001 to February 28th, 2003. METHODS A record review of Speech Language Pathology services was conducted. Referral sources in each community, the rate of referrals, reasons for discharge and changes in abilities of three clients were examined. RESULTS The rate of referrals increased as the service became more familiar. Small increases in client abilities were noted over the specified time period. CONCLUSION Speech Language Pathology services are being utilized more effectively as the referral sources become more familiar with the program.
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Affiliation(s)
- S Loughery
- J.A. Hildes Northern Medical Unit, University of Manitoba, Winnipeg, Canada.
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Achtemichuk M, McKenzie B, Fricke M, Cooper J, Macaulay A, Durcan A. Community based physiotherapy services in the Kivalliq Region of Nunavut, Canada. Int J Circumpolar Health 2005; 63 Suppl 2:98-100. [PMID: 15736630 DOI: 10.3402/ijch.v63i0.17866] [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: 11/14/2022] Open
Abstract
OBJECTIVES Community based physiotherapy services are an integral component of the recent implementation of a medical rehabilitation program in the Kivalliq Region of Nunavut. Since the year 2000, the Inuit people of Canada's central Arctic have had direct access to physiotherapy in their home communities. STUDY DESIGN A quantitative review of physiotherapy services from January 1, 2001 to December 31, 2002. METHODS Workload measurement data gathered by the physiotherapists in the field will be utilized to present information on referral sources, location of services provided, client diagnoses and average duration of treatment provided. Administrative data will provide information on staffing complements and challenges to date. The need for physiotherapy referrals out of the Kivalliq Region will be reviewed. RESULTS Referral sources to physiotherapy services are varied, the majority of diagnoses are musculoskeletal in nature, followed by neurological and cardiovascular. Recruitment of the physiotherapy positions has been successful to date. Referrals out of the region for physiotherapy services have been rare since community based services have begun. CONCLUSIONS Access to physiotherapy services by the residents of the Kivalliq Region has been significantly enhanced since the implementation of the medical rehabilitation program.
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Affiliation(s)
- M Achtemichuk
- JA Hildes Northern Medical Unit, University of Manitoba, Winnipeg, Canada
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Fainerman VB, Vollhardt D, Roth A, Fricke M, Volkmer D. Dynamics and Equilibrium of the Penetration of Soluble Cetyltrimethylammonium Bromide into Langmuir Monolayers of Arachidic Acid under Different pH Conditions. J Phys Chem B 2004. [DOI: 10.1021/jp040070i] [Citation(s) in RCA: 9] [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: 11/30/2022]
Affiliation(s)
- V. B. Fainerman
- Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, Donetsk 83003, Ukraine, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany, and Faculty of Chemistry (AC1), University of Bielefeld, P.O. Box 100 131, D-33501 Bielefeld, Germany
| | - D. Vollhardt
- Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, Donetsk 83003, Ukraine, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany, and Faculty of Chemistry (AC1), University of Bielefeld, P.O. Box 100 131, D-33501 Bielefeld, Germany
| | - A. Roth
- Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, Donetsk 83003, Ukraine, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany, and Faculty of Chemistry (AC1), University of Bielefeld, P.O. Box 100 131, D-33501 Bielefeld, Germany
| | - M. Fricke
- Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, Donetsk 83003, Ukraine, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany, and Faculty of Chemistry (AC1), University of Bielefeld, P.O. Box 100 131, D-33501 Bielefeld, Germany
| | - D. Volkmer
- Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, Donetsk 83003, Ukraine, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany, and Faculty of Chemistry (AC1), University of Bielefeld, P.O. Box 100 131, D-33501 Bielefeld, Germany
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Abstract
In this article we present the development of a multibeam two-photon laser scanning microscope. A new type of beam splitter to create the multitude of laser beams is described. This type of beam splitter has higher transmission and generates more uniform beams than can be achieved with the microlens approach used by other groups. No crosstalk exists between the different foci due to small temporal delays between the individual beams. The importance of dispersion compensation to obtain maximum efficiency of the microscope is discussed. With optimum compensation the fluorescence signal was raised by a factor of 14. Different modes of detecting the fluorescence signals and their effect on imaging speed and resolution are discussed.
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Affiliation(s)
- T Nielsen
- Angewandte Laserphysik, Universitaet Bielefeld, Universitaetsstrasse 25, D-33615 Bielefeld, Germany.
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Witte T, Hartung K, Sachse C, Matthias T, Fricke M, Kalden JR, Lakomek HJ, Peter HH, Schmidt RE. Rheumatoid factors in systemic lupus erythematosus: association with clinical and laboratory parameters. SLE study group. Rheumatol Int 2000; 19:107-11. [PMID: 10776689 DOI: 10.1007/s002960050112] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The prevalence and clinical and laboratory associations of IgM, IgG and IgA rheumatoid factors (RF) were determined in 352 patients with systemic lupus erythematosus (SLE). IgM, IgG, and IgA class RF were detected in 17.9%, 20.5%, and 20.5% of the sera, respectively. RF were associated with sicca syndrome, hypergammaglobulinemia, high titer of antinuclear antibodies, anemia, SSA- and SSB-antibodies, and with the presence of HLA-DR3. RF correlated negatively with nephritis and livedo racemosa. Moreover, we observed an association of RF and parameters of inflammatory activity such as elevated erythrocyte sedimentation rate (ESR) and leukopenia. Analysis of immunoglobulin classes revealed that laboratory parameters of inflammatory activity, SSA- and SSB-antibodies and HLA-DR3 correlated with IgA RF only. IgA RF define a subgroup of SLE patients characterized by distinct autoimmune phenomena and high disease activity in the absence of nephritis.
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Affiliation(s)
- T Witte
- Abteilung Klinische Immunologie, Medizinische Hochschule Hannover, Germany.
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Witte T, Hartung K, Sachse C, Fricke M, Buyny S, Deicher H, Kalden JR, Lakomek HJ, Peter HH, Schmidt RE. Thrombomodulin in systemic lupus erythematosus: association with clinical and laboratory parameters. Rheumatol Int 2000; 19:15-8. [PMID: 10651075 DOI: 10.1007/s002960050092] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 11/29/2022]
Abstract
Thrombomodulin is an endothelial cell membrane glycoprotein and is detected in plasma and serum after endothelial injury. In our study comprising 311 patients with systemic lupus erythematosus (SLE) clinical and laboratory associations of elevated thrombomodulin serum concentrations were examined. Elevated thrombomodulin concentrations were detected in 7.1% of the SLE patients and were associated with nephritis including the laboratory parameters proteinuria and erythrocyte casts, vasculitis and neurological involvement of the central nervous system. These correlations remained significant after consideration of the influence of renal function. In SLE, the serum thrombomodulin concentration may become a marker to monitor damage of endothelial cells and involvement of the central nervous system.
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Affiliation(s)
- T Witte
- Abteilung Klinische Immunologie, Medizinische Hochschule Hannover, Germany.
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25
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Fricke M. Self-determination: the panacea for Canadian aboriginal people with disabilities? Int J Circumpolar Health 1999; 57 Suppl 1:719-24. [PMID: 10093377] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
Equal access and participation issues are at the forefront of the current disability advocacy movement. Disabled people worldwide are demanding a change in attitudes and policies reflecting their inherent right as citizens to full participation in society. The inequalities faced by the Canadian Aboriginal community with disabilities are magnified by unique socioeconomic, political, environmental, and cultural barriers. The current rate of disability in the Canadian Aboriginal population (31%) is double the national rate. The existing system available to Aboriginal people with special needs has often resulted in an unaccountable and ineffective web of service delivery. This paper documents various aspects of the existing structure of service delivery and the potential barriers to independent living for adults with disabilities living in remote First Nations communities in Northern Manitoba, Canada. Possible advantages and drawbacks to service provision in health transfer from the federal government to First Nation control are explored.
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Affiliation(s)
- M Fricke
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Canada
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Witte T, Hartung K, Sachse C, Matthias T, Fricke M, Deicher H, Kalden JR, Lakomek HJ, Peter HH, Schmidt RE. IgM anti-dsDNA antibodies in systemic lupus erythematosus: negative association with nephritis. SLE Study Group. Rheumatol Int 1998; 18:85-91. [PMID: 9833247 DOI: 10.1007/s002960050063] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [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: 11/30/2022]
Abstract
Antibodies against dsDNA of the IgM class were measured in sera of 352 patients with systemic lupus erythematosus, 81 blood donors and 189 patients with rheumatoid arthritis using a new ELISA based on human recombinant dsDNA as antigen. IgM anti-dsDNA antibodies were found in 52.3% of the sera from patients with systemic lupus erythematosus, but in none of the sera from 81 normal controls and 189 patients with rheumatoid arthritis. The association of these autoantibodies with 31 clinical and 37 laboratory parameters was calculated. There was a highly significant negative correlation between IgM anti-dsDNA antibodies and nephritis as well as all the laboratory parameters indicating renal disease (elevated serum creatinine concentration, proteinuria, erythrocyte casts in the urine). IgM anti-dsDNA antibodies indicate protection of lupus patients against the development of lupus nephritis. Further experiments will show whether application of IgM anti-dsDNA antibodies is effective in treating lupus nephritis.
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Affiliation(s)
- T Witte
- Abteilung Klinische Immunologie, Medizinische Hochschule Hannover, Germany.
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27
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Witte T, Hartung K, Matthias T, Sachse C, Fricke M, Deicher H, Kalden JR, Lakomek HJ, Peter HH, Schmidt RE. Association of IgA anti-dsDNA antibodies with vasculitis and disease activity in systemic lupus erythematosus. SLE Study Group. Rheumatol Int 1998; 18:63-9. [PMID: 9782535 DOI: 10.1007/s002960050059] [Citation(s) in RCA: 23] [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: 11/30/2022]
Abstract
Previously it has been suggested that the presence of antibodies against dsDNA of the IgA class may define a subset of systemic lupus erythematosus (SLE) patients suffering from nephritis and arthritis. Therefore, these autoantibodies were measured in sera of 352 patients with SLE, 81 blood donors, and 189 patients with rheumatoid arthritis using a new ELISA based on human recombinant dsDNA as antigen. IgA anti-dsDNA antibodies were found in 19.9% of the sera from patients with SLE, but in none of the sera from 81 normal controls and 189 patients with rheumatoid arthritis. The association of these autoantibodies with 31 clinical and 36 laboratory parameters was calculated. IgA anti-dsDNA antibodies were found to be associated with parameters of disease activity such as elevated erythrocyte sedimentation rate and consumption of complement component C3, and the clinical parameters vasculitis, with necrosis and erythema, but not with nephritis and arthritis. Therefore, IgA anti-dsDNA antibodies define a subset of SLE patients, and monitoring of IgA anti-dsDNA antibodies may be helpful as a prognostic parameter in patients with SLE.
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Affiliation(s)
- T Witte
- Abteilung Klinische Immunologie, Medizinische Hochschule, Hannover, Germany.
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Köhler T, Fricke M, Ritz T, Scherbaum N. Psychophysiological reactivity of borderline hypertensives and their recovery after mental stress. Psychother Psychosom 1997; 66:261-7. [PMID: 9311031 DOI: 10.1159/000289145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
UNLABELLED The question of psychophysiological reactivity of borderline hypertensives is still controversial. METHODS Young males with borderline blood pressure levels and normotensive controls were recruited during a routine examination. Samples of study I comprised 19 subjects, samples of study II 18 subjects. Two stressors were presented (distressing movie, mental arithmetic), each followed by a recovery phase. Systolic and diastolic blood pressure, heart rate, and electrodermal parameters were assessed repeatedly. RESULTS Borderline hypertensives showed greater reactions to stressors in systolic blood pressure only. Changes in percentage of baseline levels were essentially the same. Recovery after stress did not differ between groups. CONCLUSION Only moderate support is given to the hypothesis that borderline hypertensives show increased and slowly recovering psychophysiological responses.
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Affiliation(s)
- T Köhler
- Institute of Psychology III, University of Hamburg, Germany
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29
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Doth M, Fricke M, Nicoletti F, Garotta G, Van Velthuysen ML, Bruijn JA, Gleichmann E. Genetic differences in immune reactivity to mercuric chloride (HgCl2): immunosuppression of H-2d mice is mediated by interferon-gamma (IFN-gamma). Clin Exp Immunol 1997; 109:149-56. [PMID: 9218838 PMCID: PMC1904708 DOI: 10.1046/j.1365-2249.1997.4041300.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Upon treatment with HgCl2, H-2s mice, such as B10.S, develop an activation of B lymphocytes that depends, at least partially, on activation of T helper type 2 (Th2) cells and results in increased serum levels of IgG1 and IgE, appearance of IgG autoantibodies, and development of immune glomerulonephritis and vasculitis. Results of previous studies and of experiments presented here indicate that the B cell activation and systemic autoimmune disease fail to develop in MHC-congenic B10.D2 (H-2d) and B10.BR (H-2k) mice treated with HgCl2, although B10.D2 T cells showed signs of activation by and specificity for HgCl2 comparable to those seen in strain B10.S. Here, we report that following HgCl2 injections the antibody response to sheep erythrocytes is normal in B10.S, but suppressed in B10.D2 mice. This suppression was prevented by MoAb to mouse IFN-gamma. Conversely, treatment of B10.D2 mice with murine recombinant IFN-gamma (rIFN-gamma) was able to reproduce the immunosuppression seen after HgCl2 treatment. In B10.S mice, it took administration of both rIFN-gamma and HgCl2 to suppress the anti-sheep erythrocyte response. Although rIFN-gamma diminished the increase in IgE serum levels of HgCl2-treated B10.S mice, it failed to prevent their autoantibody production and immune glomerulonephritis. These findings further strengthen the concept that B10.S mice react to HgCl2 by preferential activation of their Th2 cells producing IL-4, whereas B10.D2 mice react to HgCl2 by preferential activation of their Th1 cells, which produce IFN-gamma and thus suppress antibody responses.
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Affiliation(s)
- M Doth
- Division of Immunology, Medical Institute of Environmental Hygiene at Heinrich Heine University Dusseldorf, Germany
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30
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Sachse C, Lüthke K, Hartung K, Fricke M, Liedvogel B, Kalden JR, Peter HH, Lakomek HJ, Henkel E, Deicher H. Significance of antibodies to cardiolipin in unselected patients with systemic lupus erythematosus: clinical and laboratory associations. The SLE Study Group. Rheumatol Int 1995; 15:23-9. [PMID: 7652462 DOI: 10.1007/bf00286765] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [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: 01/26/2023]
Abstract
In a multicentre study anticardiolipin antibodies of the IgG and IgM isotypes were measured by a solid phase enzyme immunoassay in 368 patients with systemic lupus erythematosus (SLE) who were not selected on the basis of features of antiphospholipid syndrome. Clinical and laboratory associations of increased levels of anticardiolipin antibodies were evaluated. IgG and IgM antibodies to cardiolipin were documented in 224 (60.9%) and 128 (34.8%) patients, respectively. Regarding the symptoms of antiphospholipid syndrome, elevated amounts of anticardiolipin IgG were significantly associated with spontaneous abortion (P < 0.001), thrombocytopenia (P < 0.01), livedo reticularis (P < 0.01) and a positive direct Coombs test (P < 0.05), but not with thrombosis or central nervous system diseases such as epilepsy and psychosis. IgM antibodies to cardiolipin were associated with a positive direct Coombs test (P < 0.01), but with no other symptom of antiphospholipid syndrome. The predictive values of anticardiolipin antibody determinations in unselected SLE patients were poor for all features of antiphospholipid syndrome because of high proportions of false-positive and false-negative results. As for other manifestations of SLE, positive correlations between raised antibodies to double-stranded DNA and the occurrence of anticardiolipin antibodies of the IgG isotype were observed, and anticardiolipin IgM was negatively associated with nephritis.
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Affiliation(s)
- C Sachse
- Institut für Klinische Chemie II, Medizinische Hochschule Hannover, Germany
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31
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Neu E, von Mikecz AH, Hemmerich PH, Peter HH, Fricke M, Deicher H, Genth E, Krawinkel U. Autoantibodies against eukaryotic protein L7 in patients suffering from systemic lupus erythematosus and progressive systemic sclerosis: frequency and correlation with clinical, serological and genetic parameters. The SLE Study Group. Clin Exp Immunol 1995; 100:198-204. [PMID: 7743655 PMCID: PMC1534346 DOI: 10.1111/j.1365-2249.1995.tb03653.x] [Citation(s) in RCA: 18] [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] [Indexed: 01/26/2023] Open
Abstract
Recent studies have shown that sera of patients suffering from systemic autoimmune diseases contain autoantibodies directed against the eukaryotic ribosomal protein L7 [1]. In the present study we screened a large panel of sera from patients with systemic lupus erythematosus (SLE) for the presence of anti-L7 autoantibodies and their relationship to clinical, serological and genetic parameters of SLE. By means of an ELISA employing recombinant protein L7 as antigen we detected anti-L7 autoantobodies in 172 of 506 SLE sera (34%). Negative correlations were observed between the presence of anti-L7 autoantibodies, serum IgG levels and proteinuria; a potentially positive relationship existed with lung fibrosis. In order to analyse further this possibility we screened sera of 129 patients suffering from progressive systemic sclerosis (PSS) for anti-L7 reactivity; 45 of these patients had lung fibrosis. Of the PSS patients, 41% exhibited anti-L7 autoantibodies, but positive reactions were evenly distributed among patients with and without lung fibrosis. Protein L7 thus represents a major autoantigen of systemic autoimmune diseases, but does not so far define a distinct subpopulation of patients.
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Affiliation(s)
- E Neu
- Lehrstuhl für Immunologie, Fakultät für Biologie, Universität Konstanz, Freiburg, Germany
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Vieten G, Hadam MR, De Boer H, Olp A, Fricke M, Hartung K. Expanded macrophage precursor populations in BXSB mice: possible reason for the increasing monocytosis in male mice. Clin Immunol Immunopathol 1992; 65:212-8. [PMID: 1451327 DOI: 10.1016/0090-1229(92)90149-i] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The BXSB mouse spontaneously develops an autoimmune disease that resembles human systemic lupus erythematosus (SLE). During their lifetime, male BXSB mice show an increasing monocytosis in the peripheral blood as opposed to their female littermates. This monocytosis is unique among autoimmune-prone mice. To test the hypothesis that alterations at the stem cell level may be responsible for this monocytosis, myeloid bone marrow precursor cells were examined in both male and female BXSB mice from 4 to 40 weeks of age. The number of M-CSF responding stem cells (CFU-M) and the number of GM-CSF responding stem cells (CFU-GM) were higher than in all other inbred mouse strains tested. In addition, male BXSB mice developed a progressive increase of CFU-M and CFU-GM in the bone marrow during their lifetime, which paralleled the peripheral blood monocytosis. The monocytosis in male BXSB mice is the result of a further expansion of the strain-specific high number of macrophage precursors by intrinsic factors, which may be attributed to the influence of the Yaa factor. The sex-specific expanded mononuclear phagocyte system may promote the autoimmune process and may be one reason for the dramatic course of murine SLE in male BXSB mice.
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Affiliation(s)
- G Vieten
- Department of Immunology, Hannover Medical School, Germany
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Hartung K, Baur MP, Coldewey R, Fricke M, Kalden JR, Lakomek HJ, Peter HH, Schendel D, Schneider PM, Seuchter SA. Major histocompatibility complex haplotypes and complement C4 alleles in systemic lupus erythematosus. Results of a multicenter study. J Clin Invest 1992; 90:1346-51. [PMID: 1401069 PMCID: PMC443179 DOI: 10.1172/jci116000] [Citation(s) in RCA: 114] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
In a multicenter study more than 300 central European systemic lupus erythematosus (SLE) patients were examined for HLA-B, HLA-DR, and complement C4 phenotypes. For 174 SLE patients MHC haplotypes were determined by family segregation analysis, and for 155 patients C4 gene deletions were determined by TaqI restriction fragment length polymorphism. Two haplotypes, B8-C4AQ0-C4B1-DR3 and B7-C4A3-C4B1-DR2, were identified as risk factors for SLE. These findings were confirmed by applying the haplotype frequency difference (HFD) method, which uses nontransmitted haplotypes from the family study as internal controls. Furthermore, only HLA-DR2, but not DR3, B7, or B8, was significantly increased in SLE patients independently of the two risk haplotypes. C4A gene deletions, but not silent C4AQ0 alleles, were increased in SLE patients and neither C4BQ0 alleles nor C4B gene deletions were increased. The observed frequencies of homozygosity and heterozygosity for the two haplotypes and the frequencies of homozygotes for C4AQ0 and C4A deletions did not differ from the expected values, indicating that the risk for SLE is conveyed by single allele effects. In conclusion, there are two MHC-linked susceptibility factors for Caucasian SLE patients carried by the haplotypes B7-DR2 and B8-DR3. The results argue against C4Q0 alleles being the decisive factors increasing susceptibility to SLE.
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Ehrfeld H, Hartung K, Renz M, Coldewey R, Deicher H, Fricke M, Kalden JR, Lakomek J, Peter HH, Schendel D. MHC associations of autoantibodies against recombinant Ro and La proteins in systemic lupus erythematosus. Results of a multicenter study. SLE Study Group. Rheumatol Int 1992; 12:169-73. [PMID: 1290018 DOI: 10.1007/bf00302148] [Citation(s) in RCA: 12] [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: 12/26/2022]
Abstract
Antibodies against recombinant 52 kD-Ro, recombinant 60 kD-Ro and recombinant La protein were determined by ELISA in over 300 central European patients with systemic lupus erythematosus (SLE). A strong association with HLA-DR3 was found for antibodies against 52 kD-Ro and La, but not for recombinant 60 kD-Ro antibodies in the absence of antibodies against 52 kD-Ro or La. Ro/La negative SLE patients still showed an increased frequency of HLA-DR3 as compared to healthy controls. These results indicated that the preferential formation of Ro and La antibodies was not due to an unspecific stimulatory effect of HLA-DR3 but that the antibody response to certain defined proteins (52 kD-Ro and La) was influenced by MHC genes in SLE. Furthermore, the association of SLE with HLA-DR3 was independent of the effects of DR3 on the formation of 52 kD-Ro and La antibodies.
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Affiliation(s)
- H Ehrfeld
- Department of Medicine, University of Hannover, Federal Republic of Germany
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Krapf F, Renger D, Schedel I, Fricke M, Kemper A, Deicher H. Circulating immune complexes in malignant diseases increased detection rate by simultaneous use of three assay methods. Cancer Immunol Immunother 1983; 15:138-43. [PMID: 6603263 PMCID: PMC11039225 DOI: 10.1007/bf00199705] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/1982] [Accepted: 03/08/1983] [Indexed: 01/21/2023]
Abstract
By using three different assay methods, circulating immune complexes have been detected in 85% of sera from patients with malignant melanoma, and in 77% of sera from patients with breast cancer. These methods were a C1q-binding assay, a double-antibody conglutinin-binding ELISA, and a polyethylene glycol 6000 precipitation technique followed by quantitative determination of immunoglobulins in the redissolved precipitate. Detection rates of circulating immune complexes using any one of these methods separately ranged from 33% to 56%, indicating the presence of different types of circulating immune complexes in cancer patients' sera. The combined use of the three methods mentioned resulted in an increased diagnostic sensitivity and a doubling of the predictive value. However, tests for circulating immune complexes cannot be considered as useful parameters for early diagnosis of cancer, since the comparatively low incidence of malignancies in the population at large, together with the presence of circulating immune complexes in other, nonmalignant, diseases of considerable prevalence, appears to preclude effective application of any nonspecific method for early diagnosis of cancer in general.
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Vorbeck A, Liman W, Fricke M, Peter HH, Schedel I, Deicher H. [(Fab')2-antiglobulins in serum and synovial fluid in patients with chronic polyarthritis]. Z Rheumatol 1981; 40:171-8. [PMID: 6974932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In addition to the well-known rheumatoid factors or antiglobulins belonging to different immunoglobulin classes, a new type of antiglobulin has been found in serum and synovial fluid from patients with rheumatoid arthritis. 15/20 sera and 6/6 synovial fluids contained serologically active material with a molecular weight of approximately 95.000 Daltons. Using chromatographic and affinity chromatographic methods as well as specific precipitation techniques, the (Fab')2 character of these antiglobulins could be ascertained. These antiglobulins may arise through enzymatic degradation of IgG or monomeric IgM antiglobulins, or may be the product of partial intracellular degradation of phagocytosed immune complexes with subsequent extrusion of such material. An in vitro blocking effect of (Fab')2 type antiglobulins on SCMC or ADCC reactions was not found.
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Abstract
Description of a 68-year-old woman with intermittent exophthalmus produced by valves in the orbital veins, which have not been described hitherto.
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Driessen A, Mauer W, Fricke M, Kossmann B, Schleinzer W. [Prospective studies on the pathologic mechanism of post-spinal headache in a select group of patients (author's transl)]. Anaesthesist 1980; 29:38-41. [PMID: 7425265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this prospective study 613 patients on whom a total of 783 spinal anaesthetics had been performed, all for urological operations, were questioned and examined. Subjective complaints occured in 102 cases (13%) and were found to be more frequent amongst the female patients. 23 cases (2.9%) developed a typical post-spinal headache, this being more likely to occur if the patient was a woman, was young, and if a 22-Gauge needle was used. The headache usually began on getting up on the day of operation or the first post-operative day, and rarely lasted longer than four days. The pathophysiological changes indicate that the headache is caused by a fall in CSF pressure. The therapy and various methods of preventing this complication are discussed, and the other potential neurological symptoms and signs mentioned.
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Schedel I, Peest D, Stünkel K, Fricke M, Eckert G, Deicher H. Idiotype-bearing peripheral blood lymphocytes in human multiple myeloma and Waldenström's macroglobulinaemia. Scand J Immunol 1980; 11:437-44. [PMID: 6155689 DOI: 10.1111/j.1365-3083.1980.tb00010.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Antisera raised against idiotypic determinants (ID) of myeloma proteins and macroglobulins have been used to differentiate peripheral blood lymphocyte (PBL) populations from individual patients. ID-positive lymphocytes not resembling plasma cells have been regularly found in peripheral blood in these diseases. For further characterization ID-positive lymphocytes were enriched from the peripheral blood by affinity chromatography using heterologous anti-idiotypic sera. Two patients with IgG myeloma, one patient with Waldenström's macroglobulinaemia and two persons with benign monoclonal hyperglobulinaemia (BMH) were examined by this technique. The ID-positive PBL population was shown to be heterogeneous with respect to non-tumour-specific surface markers, such as sheep erythrocytes (SRBC), Fc and C receptors. Tumour-specific idiotypic determinants will thus allow a more correct recognition of the total tumour cell compartment in these diseases.
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41
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Zick R, Fricke M, Gebel M, Mitzkat HJ. [Computerized tomographic localization of insulinomas (author's transl)]. Med Klin 1979; 74:1447-50. [PMID: 226852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Computerized tomographic localization of insulinomas utilises the differences in radiodensity between the tumor and the adjacent pancreatic tissue. With the aid of this new technique four insulinomas have been localized preoperatively. All of the tumors had the same radiodensity. Firm, well encapsulated beta-islet-cell tumors were detected with the same ease as an insulinoma, which was soft and almost without encapsulation. The smallest tumor detected was 1.0 cm in diameter. Of the four insulinomas, localized by computer tomography of the body, only one was also detected angiographically and only two were detected sonographically.
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42
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Fricke M, Aust W. [Intermittent exophthalmos due to "valves" in the vena ophthalmica superior]. ROFO-FORTSCHR RONTG 1979; 130:119-21. [PMID: 153301 DOI: 10.1055/s-0029-1231239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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43
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Schedel I, Beck P, Peest D, Schneider KD, Fricke M, Eckert G, Deicher H. Peripheral blood lymphocyte subpopulations in multiple myeloma. Adv Exp Med Biol 1979; 114:833-9. [PMID: 463673 DOI: 10.1007/978-1-4615-9101-6_137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Antisera raised against idiotypic determinants of myeloma proteins and macroglobulins have been used to differentiate peripheral blood lymphocytes populations from individual patients. I.D.-positive lymphocytes not resembling plasma cells have been regularly found in peripheral blood in these diseases. This lymphocyte population is heterogeneous with respect to non-tumor-specific surface markers, such as SRBC-, Fc- and C-receptors. Tumor specific idiotypic determinants will thus allow a more correct recognition of the total tumor cell compartment in these diseases.
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44
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Dennhardt R, Fricke M, Stöckert G. [Metabolism and distribution of bupivacaine-experiments in rats. II. Distribution and elimination (author's transl)]. Anaesthesist 1978; 27:86-92. [PMID: 717764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
To avoid the influence of general anaesthetics on the functions of most organ systems, the present experiments were carried out in unanaesthetized rats. Blood concentrations in the aorta, V. portae and Vv. hepaticae as well as urinary and biliary excretions of bupivacaine were studied after either intravenous or enteral administration. From the course of the aortic bupivacaine concentrations after i.v. injection the following pharmacokinetic data were derived: t1/2 = 24,7 min; k2 = 1,467 h; V = 1,492 1. Absorption of bupivacaine from the jejunum is rapid. The hepatic clearance of bupivacaine in the rat is 12 ml/kg b.w..min-1. The biliary excretion of bupivacaine in the rat is very small; therefore the enterohepatic circulation of this substance may be considered neglible.
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45
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Dick W, Ahnefeld FW, Fricke M, Knoche E, Milewski P, Traub E. [The anaesthesia outpatient clinic. A new concept of preanaesthetic preparation and treatment after two years experiences (author's transl)]. Anaesthesist 1978; 27:450-8. [PMID: 717745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The anaesthesia outpatient clinic can be a new concept of preanaesthetic preparation and treatment. Related to the figures of 1977, a report is given about our 2-years experience. Patients from the usual outpatient clinics, like gynecology, urology, ENT, who are expected to be operated upon are immediately sent to the anaesthesia outpatient clinic for preanaesthetic check up. After the overall state of the patient has been examined, the original outpatient clinic and/or the family doctor are given information about the patients condition, and probably proposals for a preanaesthetic treatment are made. In 1977, 15% of all anaesthetized patients were checked as outpatients, another 40% were only examined after entering the hospital, whereas as few as 17% were not checked in the anaesthesic outpatient clinic. In patients, checked as outpatients, the period between the first day of hospitalisation and operation was evidently shorter than in patients, having been hospitalized at the time of preanaesthetic examination. This gives the opportunity to save money and beds. Furthermore, the anaesthesia outpatient clinic improves the organisation and efficiency of surgery, urology, gynecology etc., improves the relationship between patients and anaesthetists, decreases the risk of anaesthesia and operation, saves personnel and gives a qualified additional background for the purposes of graduation and student training.
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46
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Krokowski E, Fricke M. [The development of osteoporosis. A new concept]. Med Welt 1978; 29:1483-90. [PMID: 692344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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47
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Siebert F, Kalden JR, Fink P, Fricke M, Deicher H. The effect of serum and allogeneic antiglobulin preparations on the mitogenic reactivity of peripheral blood lymphocytes from patients with rheumatoid arthritis. Z Rheumatol 1978; 37:286-95. [PMID: 310604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In vitro transofrmation of peripheral blood lymphocytes (PBL) by phytohaemagglutinin (PHA) and concanavalin A (Con A) was found to be decreased in 17 RA patients. The addition of 50 microliter RA serum or serum from normal controls exhibited an inhibitory effect on the mitogenic reactivity to Con A but not to PHA of both normal and RA patient's PBL. Allogeneic antiglobulin preparations (a-Ig) stimulated the spontaneous in vitro DNA synthesis of PBL from normal control and, to a smaller degree, also from RA patients. The simultaneous addition of a-Ig's and mitogens to PBL of normal controls and RA patients did not exhibit a significant effect on the mitogenic reactivity.
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Dennhardt R, Fricke M, Stöckert G. [Metabolism and distribution of bupivacaine-experiments in rats I. Methods and metabolism (author's transl)]. Anaesthesist 1978; 27:59-64. [PMID: 686353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A method is described enabling blood concentrations and urinary and biliary excretion of bupivacaine to be estimated in unanaesthetized rats. After enteral application of bupivacaine, the urine volumes of 40 rats are collected, cleared off and analysed by gas chromatography. 5 fractions are obtained, of which the structures are identified by mass spectrometry and nuclear magnetic resonance. The following five metabolites could be identified: (1) Desbutyl-bupivacaine, (2) 3'-Hydroxy-bupivacaine, (3) N-Butylpipecolyl-2-amide, (4, 5) mono-hydroxylated isomeres on the piperidine ring.
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Fricke M, Zick R, Mitzkat HJ. [Insulinoma in the computer-tomogramm (author's transl)]. Radiologe 1978; 18:252-4. [PMID: 210481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Documentation of insulinoma by computerized tomography and the diagnostic value of this new method compared with conventional radiography is discussed. The study of four cases demonstrates the capability of computer tomography to localize tumors in the pancreas.
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Krokowski E, Polonyi S, Fricke M, Banzer D. Interpretation der Osteoporosezeichen im Röntgenbild als Teilaspekt der neuen hämodynamisch-biostatischen Theorie (Fortschr. Röntgenstr. 125, 4 (1976) 310–317). ROFO-FORTSCHR RONTG 1977. [DOI: 10.1055/s-0029-1230679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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