1
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Djerbi N, Zimmermann K, Roncador M, Becker MO, Manz MG, Balabanov S. Intrapatient competition of VEXAS syndrome and CML clones. Blood Adv 2023; 7:6815-6818. [PMID: 37738165 PMCID: PMC10679802 DOI: 10.1182/bloodadvances.2023010814] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/29/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023] Open
Affiliation(s)
- Nadia Djerbi
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Kathrin Zimmermann
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Marco Roncador
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
- Department of Biosystems Science and Engineering, Eidgenössische technische Hochschule Zurich, Basel, Switzerland
| | - Mike Oliver Becker
- Department of Rheumatology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Markus G. Manz
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Stefan Balabanov
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
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2
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Völzke H, Schössow J, Schmidt CO, Jürgens C, Richter A, Werner A, Werner N, Radke D, Teumer A, Ittermann T, Schauer B, Henck V, Friedrich N, Hannemann A, Winter T, Nauck M, Dörr M, Bahls M, Felix SB, Stubbe B, Ewert R, Frost F, Lerch MM, Grabe HJ, Bülow R, Otto M, Hosten N, Rathmann W, Schminke U, Großjohann R, Tost F, Homuth G, Völker U, Weiss S, Holtfreter S, Bröker BM, Zimmermann K, Kaderali L, Winnefeld M, Kristof B, Berger K, Samietz S, Schwahn C, Holtfreter B, Biffar R, Kindler S, Wittfeld K, Hoffmann W, Kocher T. Cohort Profile Update: The Study of Health in Pomerania (SHIP). Int J Epidemiol 2022; 51:e372-e383. [PMID: 35348705 DOI: 10.1093/ije/dyac034] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 02/25/2022] [Indexed: 12/16/2022] Open
Affiliation(s)
- Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Janka Schössow
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | | | - Clemens Jürgens
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Adrian Richter
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - André Werner
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Nicole Werner
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Dörte Radke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Alexander Teumer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Till Ittermann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Birgit Schauer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Vivien Henck
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Nele Friedrich
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Anke Hannemann
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Theresa Winter
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Nauck
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Marcus Dörr
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Martin Bahls
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Stephan B Felix
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Beate Stubbe
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Ralf Ewert
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Fabian Frost
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Markus M Lerch
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Hans J Grabe
- Clinic of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.,German Centre for Neurodegenerative Diseases, Site Rostock/Greifswald, Greifswald, Greifswald, Germany
| | - Robin Bülow
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Markus Otto
- Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Norbert Hosten
- Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Wolfgang Rathmann
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Greifswald, Germany
| | - Ulf Schminke
- Department of Neurology, University Medicine Greifswald, Greifswald, Germany
| | - Rico Großjohann
- Clinic of Ophthalmology, University Medicine Greifswald, Greifswald, Germany
| | - Frank Tost
- Clinic of Ophthalmology, University Medicine Greifswald, Greifswald, Germany
| | - Georg Homuth
- Interfaculty Institute of Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Interfaculty Institute of Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Weiss
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Interfaculty Institute of Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Silva Holtfreter
- Department of Immunology, University Medicine Greifswald, Greifswald, Germany
| | - Barbara M Bröker
- Department of Immunology, University Medicine Greifswald, Greifswald, Germany
| | - Kathrin Zimmermann
- Friedrich Loeffler Institute for Medical Microbiology, University Medicine Greifswald, Greifswald, Germany
| | - Lars Kaderali
- Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | | | | | - Klaus Berger
- Institute of Epidemiology and Social Medicine, University of Munster, Munster, Germany
| | - Stefanie Samietz
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - Christian Schwahn
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - Birte Holtfreter
- Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, University Medicine Greifswald, Greifswald, Germany
| | - Reiner Biffar
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Kindler
- Department of Oral and Maxillofacial Surgery/Plastic Surgery, University Medicine Greifswald, Greifswald, Germany
| | - Katharina Wittfeld
- Clinic of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.,German Centre for Neurodegenerative Diseases, Site Rostock/Greifswald, Greifswald, Greifswald, Germany
| | - Wolfgang Hoffmann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,German Centre for Neurodegenerative Diseases, Site Rostock/Greifswald, Greifswald, Greifswald, Germany
| | - Thomas Kocher
- Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, University Medicine Greifswald, Greifswald, Germany
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3
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Sternes PR, Brett L, Phipps J, Ciccia F, Kenna T, de Guzman E, Zimmermann K, Morrison M, Holtmann G, Klingberg E, Mauro D, McIvor C, Forsblad-d'Elia H, Brown MA. Distinctive gut microbiomes of ankylosing spondylitis and inflammatory bowel disease patients suggest differing roles in pathogenesis and correlate with disease activity. Arthritis Res Ther 2022; 24:163. [PMID: 35794662 PMCID: PMC9261041 DOI: 10.1186/s13075-022-02853-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 02/21/2022] [Accepted: 06/15/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Multiple studies have confirmed dysbiosis in ankylosing spondylitis (AS) and inflammatory bowel disease (IBD); however, due to methodological differences across studies, it has not been possible to determine if these diseases have similar or different gut microbiomes. RESULTS In this study, faecal and intestinal biopsies were obtained from 33 Australian AS patients (including 5 with concomitant IBD, 'AS-IBD'), 59 IBD patients and 105 healthy controls. Stool samples were also obtained from 16 Italian AS patients and 136 Swedish AS patients. Focusing on the Australian cohort, AS, AS-IBD and IBD patients differed from one another and from healthy controls in both alpha and beta diversity. AS patients with and without clinical IBD could be distinguished from one another with moderate accuracy using stool microbiome (AUC=0.754). Stool microbiome also accurately distinguished IBD patients from healthy controls (AUC=0.757). Microbiome composition was correlated with disease activity measured by BASDAI and faecal calprotectin (FCP) levels. Enrichment of potentially pathogenic Streptococcus was noted in AS, AS-IBD and IBD patients. Furthermore, enrichment of another potentially pathogenic genus, Haemophilus, was observed in AS, AS-IBD, IBD, AS patients with increased BASDAI, and IBD patients with faecal calprotectin >100 μg/mg. Apart from these genera, no other taxa were shared between AS and IBD patients. CONCLUSIONS In conclusion, the distinct gut microbiome of AS and AS-IBD patients compared to IBD patients and healthy controls is consistent with immunological and genetic evidence suggesting that the gut plays a different role in driving AS compared with IBD. However, enrichment of two potentially pathogenic genera in both diseases suggests that the presence of a shared/common microbial trigger of disease cannot be discounted.
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Affiliation(s)
- P R Sternes
- Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.
| | - L Brett
- Department of Gastroenterology, Logan Hospital, Logan, Australia
| | - J Phipps
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - F Ciccia
- Department of Precision Medicine, Università della Campania L. Vanvitelli, Naples, Italy
| | - T Kenna
- Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.,Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane, Australia
| | - E de Guzman
- Centre for Microbiome Research, Queensland University of Technology, Brisbane, Australia.,School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - K Zimmermann
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane, Australia
| | - M Morrison
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - G Holtmann
- Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Australia
| | - E Klingberg
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - D Mauro
- Department of Precision Medicine, Università della Campania L. Vanvitelli, Naples, Italy
| | - C McIvor
- Department of Gastroenterology, Logan Hospital, Logan, Australia
| | - H Forsblad-d'Elia
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - M A Brown
- Genomics England, London, UK.,Faculty of Life Sciences and Medicine, King's College London, London, UK
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Wagner U, Wong C, Camenisch U, Zimmermann K, Rechsteiner M, Valtcheva N, Theocharides A, Widmer CC, Manz MG, Moch H, Wild PJ, Balabanov S. Comprehensive Validation of Diagnostic Next-Generation Sequencing Panels for Acute Myeloid Leukemia Patients. J Mol Diagn 2022; 24:935-954. [PMID: 35718092 DOI: 10.1016/j.jmoldx.2022.05.003] [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] [Received: 09/24/2021] [Revised: 03/11/2022] [Accepted: 05/06/2022] [Indexed: 11/28/2022] Open
Abstract
Next-generation sequencing has greatly advanced the molecular diagnostics of malignant hematological diseases and provides useful information for clinical decision making. Studies have shown that certain mutations are associated with prognosis and have a direct impact on treatment of affected patients. Therefore, reliable detection of pathogenic variants is critically important. In this study, we aimed to compare four sequencing panels with different characteristics, from number of genes covered to technical aspects of library preparation and data analysis workflows, to find the panel with the best clinical utility for myeloid neoplasms with a special focus on acute myeloid leukemia. Using the Acrometrix Oncology Hotspot Control DNA and DNA from acute myeloid leukemia patients, we evaluated panel performance in terms of coverage, precision, recall, and reproducibility and tested different bioinformatics tools that can be used for the evaluation of any next-generation sequencing panel. Taken together, our results support the reliability of the Acrometrix Oncology Hotspot Control to validate and compare sequencing panels for hematological diseases and show which panel-software combination (platform) has the best performance.
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Affiliation(s)
- Ulrich Wagner
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Christine Wong
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Ulrike Camenisch
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Kathrin Zimmermann
- Division of Medical Oncology and Hematology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Markus Rechsteiner
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Nadejda Valtcheva
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Alexandre Theocharides
- Division of Medical Oncology and Hematology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Corinne C Widmer
- Division of Medical Oncology and Hematology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Markus G Manz
- Division of Medical Oncology and Hematology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Holger Moch
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Peter J Wild
- Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, Frankfurt am Main, Germany; Frankfurt Institute for Advanced Studies, Frankfurt am Main, Germany; Wildlab, University Hospital Frankfurt MVZ GmbH, Frankfurt am Main, Germany.
| | - Stefan Balabanov
- Division of Medical Oncology and Hematology, University Hospital and University of Zurich, Zurich, Switzerland.
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5
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Laukhtina E, Schuettfort V, D`Andrea D, Pradere B, Mori K, Quhal F, Sari Motlagh R, Mostafaei H, Katayama S, Grossmann N, Rajwa P, Abufaraj M, Moschini M, Zimmermann K, Karakiewicz P, Fajkovic H, Scherr D, Compérat E, Nyirady P, Rink M, Enikeev D, Shariat S. Preoperative plasma level of endoglin as a predictor for disease outcomes after radical cystectomy for non-metastatic urothelial carcinoma of the bladder. EUR UROL SUPPL 2021. [DOI: 10.1016/s2666-1683(21)03225-0] [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: 11/30/2022] Open
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6
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Timotijevic L, Astley S, Bogaardt M, Bucher T, Carr I, Copani G, de la Cueva J, Eftimov T, Finglas P, Hieke S, Hodgkins C, Koroušić Seljak B, Klepacz N, Pasch K, Maringer M, Mikkelsen B, Normann A, Ofei K, Poppe K, Pourabdollahian G, Raats M, Roe M, Sadler C, Selnes T, van der Veen H, van’t Veer P, Zimmermann K. Designing a research infrastructure (RI) on food behaviour and health: Balancing user needs, business model, governance mechanisms and technology. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.07.022] [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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7
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Rajwa P, Schuettfort V, Quhal F, Mori K, Katayama S, Laukhtina E, Motlagh R, Mostafaei H, Pradere B, Grossmann N, Aulitzky A, Paradysz A, Karakiewicz P, Fajkovic H, Zimmermann K, Heidenreich A, Gontero P, Shariat S. Role of systemic immune-inflammation index in patients treated with salvage radical prostatectomy. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01558-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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Schwarze M, Zimmermann K, Hollo DF, Schiltenwolf M. [Incorrect occupancy in (partial) inpatient pain treatment-a frequent reason for assessment]. Orthopade 2021; 50:70-74. [PMID: 33270139 DOI: 10.1007/s00132-020-04046-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- M Schwarze
- Klinik für Orthopädie und Unfallchirurgie, Zentrum für Orthopädie, Unfallchirurgie und Paraplegiologie, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland.
| | - K Zimmermann
- Klinik für Orthopädie und Unfallchirurgie, Zentrum für Orthopädie, Unfallchirurgie und Paraplegiologie, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
| | | | - M Schiltenwolf
- Klinik für Orthopädie und Unfallchirurgie, Zentrum für Orthopädie, Unfallchirurgie und Paraplegiologie, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
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9
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Raster J, Zimmermann K, Wesche J, Aurich K, Greinacher A, Selleng K. Effect of Methylene Blue Pathogen Inactivation on the Integrity of Immunoglobulin M and G. Transfus Med Hemother 2021; 48:148-153. [PMID: 34177418 DOI: 10.1159/000514485] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 12/21/2020] [Indexed: 12/25/2022] Open
Abstract
Introduction In the light of the ongoing SARS-CoV-2 pandemic, convalescent plasma is a treatment option for CO-VID-19. In contrast to usual therapeutic plasma, the therapeutic agents of convalescent plasma do not represent clotting factor activities, but immunoglobulins. Quarantine storage of convalescent plasma as a measure to reduce the risk of pathogen transmission is not feasible. Therefore, pathogen inactivation (e.g., Theraflex®-MB, Macopharma, Mouvaux, France) is an attractive option. Data on the impact of pathogen inactivation by methylene blue (MB) treatment on antibody integrity are sparse. Methods Antigen-specific binding capacity was tested before and after MB treatment of plasma (n = 10). IgG and IgM isoagglutinin titers were tested by agglutination in increasing dilutions. Furthermore, the binding of anti-EBV and anti-tetanus toxin IgG to their specific antigens was assessed by ELISA, and IgG binding to Fc receptors was assessed by flow cytometry using THP-1 cells expressing FcRI and FcRII. Results There was no significant difference in the isoagglutinin titers, the antigen binding capacity of anti-EBV and anti-tetanus toxin IgG, as well as the Fc receptor binding capacity before and after MB treatment of plasma. Conclusion MB treatment of plasma does not inhibit the binding capacity of IgM and IgG to their epitopes, or the Fc receptor interaction of IgG. Based on these results, MB treatment of convalescent plasma is appropriate to reduce the risk of pathogen transmission if quarantine storage is omitted.
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Affiliation(s)
- Johannes Raster
- Abteilung Transfusionsmedizin, Institut für Immunologie und Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Kathrin Zimmermann
- Institut für Medizinische Mikrobiologie, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Jan Wesche
- Abteilung Transfusionsmedizin, Institut für Immunologie und Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Konstanze Aurich
- Abteilung Transfusionsmedizin, Institut für Immunologie und Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Andreas Greinacher
- Abteilung Transfusionsmedizin, Institut für Immunologie und Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Kathleen Selleng
- Abteilung Transfusionsmedizin, Institut für Immunologie und Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
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10
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Hammermüller C, Hinz A, Dietz A, Wichmann G, Pirlich M, Berger T, Zimmermann K, Neumuth T, Mehnert-Theuerkauf A, Wiegand S, Zebralla V. Depression, anxiety, fatigue, and quality of life in a large sample of patients suffering from head and neck cancer in comparison with the general population. BMC Cancer 2021; 21:94. [PMID: 33482771 PMCID: PMC7825198 DOI: 10.1186/s12885-020-07773-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/26/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Treatment of head and neck cancer (HNC) often leads to visible and severe functional impairments. In addition, patients often suffer from a variety of psychosocial problems, significantly associated with a decreased quality of life. We aimed to compare depression, anxiety, fatigue and quality of life (QoL) between HNC patients and a large sample of the general population in Germany and to examine the impact of sociodemographic, behavioral and clinical factors on these symptoms. METHODS We assessed data of HNC patients during the aftercare consultation at the Leipzig University Medical Center with a patient reported outcome (PRO) tool named "OncoFunction". Depression, anxiety, fatigue and QoL were assessed using validated outcome measures including the PHQ-9, the GAD-2, and the EORTC QLQ-C30 questionnaire. RESULTS A total of 817 HNC patients were included in our study and compared to a sample of 5018 individuals of the general German population. HNC patients showed significantly higher levels of impairment in all dimensions assessed. Examination of association between depression, anxiety, fatigue and QoL and clinical as well as sociodemographic variables showed significant relationships between occupational status, ECOG-state, body mass index and time since diagnosis. CONCLUSIONS HNC patients suffer significantly from psychological distress. The used questionnaires are suitable for the use in daily routine practice and can be helpful to increase the detection of depression, anxiety and fatigue and therefore can improve HNC aftercare.
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Affiliation(s)
- C Hammermüller
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - A Hinz
- Department of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany
| | - A Dietz
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - G Wichmann
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - M Pirlich
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - T Berger
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - K Zimmermann
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - T Neumuth
- Innovation Center Computer Assisted Surgery (ICCAS), University of Leipzig, Leipzig, Germany
| | - A Mehnert-Theuerkauf
- Department of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany
| | - S Wiegand
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany
| | - V Zebralla
- Clinic of Otolaryngology, Head and Neck Surgery, University of Leipzig, Leipzig, Germany.
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11
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Lysenko V, Wildner-Verhey van Wijk N, Zimmermann K, Weller MC, Bühler M, Wildschut MHE, Schürch P, Fritz C, Wagner U, Calabresi L, Psaila B, Flavell RA, Vannucchi AM, Mead AJ, Wild PJ, Dirnhofer S, Manz MG, Theocharides APA. Enhanced engraftment of human myelofibrosis stem and progenitor cells in MISTRG mice. Blood Adv 2020; 4:2477-2488. [PMID: 32502268 PMCID: PMC7284099 DOI: 10.1182/bloodadvances.2019001364] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/28/2020] [Indexed: 02/06/2023] Open
Abstract
The engraftment potential of myeloproliferative neoplasms in immunodeficient mice is low. We hypothesized that the physiological expression of human cytokines (macrophage colony-stimulating factor, interleukin-3, granulocyte-macrophage colony-stimulating factor, and thrombopoietin) combined with human signal regulatory protein α expression in Rag2-/-Il2rγ-/- (MISTRG) mice might provide a supportive microenvironment for the development and maintenance of hematopoietic stem and progenitor cells (HSPC) from patients with primary, post-polycythemia or post-essential thrombocythemia myelofibrosis (MF). We show that MISTRG mice, in contrast to standard immunodeficient NOD.Cg-PrkdcscidIl2rgtm1Wjl/SzJ and Rag2-/-Il2rγ-/- mice, supported engraftment of all patient samples investigated independent of MF disease stage or risk category. Moreover, MISTRG mice exhibited significantly higher human MF engraftment levels in the bone marrow, peripheral blood, and spleen and supported secondary repopulation. Bone marrow fibrosis development was limited to 3 of 14 patient samples investigated in MISTRG mice. Disease-driving mutations were identified in all xenografts, and targeted sequencing revealed maintenance of the primary patient sample clonal composition in 7 of 8 cases. Treatment of engrafted mice with the current standard-of-care Janus kinase inhibitor ruxolitinib led to a reduction in human chimerism. In conclusion, the established MF patient-derived xenograft model supports robust engraftment of MF HSPCs and maintains the genetic complexity observed in patients. The model is suited for further testing of novel therapeutic agents to expedite their transition into clinical trials.
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Affiliation(s)
- Veronika Lysenko
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | | | - Kathrin Zimmermann
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - Marie-Christine Weller
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - Marco Bühler
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Mattheus H E Wildschut
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Patrick Schürch
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - Christine Fritz
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Ulrich Wagner
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Laura Calabresi
- Center for Research and Innovation of Myeloproliferative Neoplasms, Azienda Ospedaliero, Universitaria Careggi, University of Florence, Florence, Italy
| | - Bethan Psaila
- Haematopoietic Stem Cell Biology Laboratory, Medical Research Council Weatherall Institute of Molecular Medicine
- Medical Research Council Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, and
- National Institute for Health Research Biomedical Research Centre, University of Oxford, Oxford, United Kingdom
| | | | - Alessandro M Vannucchi
- Center for Research and Innovation of Myeloproliferative Neoplasms, Azienda Ospedaliero, Universitaria Careggi, University of Florence, Florence, Italy
| | - Adam J Mead
- Haematopoietic Stem Cell Biology Laboratory, Medical Research Council Weatherall Institute of Molecular Medicine
- Medical Research Council Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, and
- National Institute for Health Research Biomedical Research Centre, University of Oxford, Oxford, United Kingdom
| | - Peter J Wild
- Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, Frankfurt, Germany; and
| | - Stefan Dirnhofer
- Institute of Pathology, University Hospital, University of Basel, Basel, Switzerland
| | - Markus G Manz
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - Alexandre P A Theocharides
- Department of Medical Oncology and Hematology, University of Zurich and University Hospital Zurich, Zurich, Switzerland
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Benz R, Zimmermann K, Rechsteiner M, Balabanov S, Manz MG, Widmer CC. Pegylated interferon can control myelodysplastic/myeloproliferative syndrome with ring sideroblasts and thrombocytosis. Leuk Lymphoma 2020; 61:2533-2535. [PMID: 32449412 DOI: 10.1080/10428194.2020.1768387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Rudolf Benz
- Division of Hematology and Oncology, Kantonsspital Muensterlingen, Muensterlingen, Switzerland
| | - Kathrin Zimmermann
- Department of Medical Oncology and Hematology, University Hospital of Zurich, Zurich, Switzerland
| | - Markus Rechsteiner
- Deparment of Pathology, University Hospital of Zurich, Zurich, Switzerland
| | - Stefan Balabanov
- Department of Medical Oncology and Hematology, University Hospital of Zurich, Zurich, Switzerland
| | - Markus G Manz
- Department of Medical Oncology and Hematology, University Hospital of Zurich, Zurich, Switzerland
| | - Corinne C Widmer
- Department of Medical Oncology and Hematology, University Hospital of Zurich, Zurich, Switzerland
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13
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Wassenaar TM, Zimmermann K. How industrial bacterial cultures can be kept stable over time. Lett Appl Microbiol 2020; 71:220-228. [PMID: 32379347 PMCID: PMC7496531 DOI: 10.1111/lam.13309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 12/22/2022]
Abstract
The tremendous variation that exists between bacterial species illustrates the power of evolution, which is the continuous process of mutation and selection over time. Even within a bacterial species, individual members can harbour an impressive degree of genetic variation, depending on the species. The question then arises how similar the offspring of a given bacterial cell over time is, and how long it takes before differences are noticeable? Here we show that on the one hand one can expect random mutations to arise, as a result of various mechanisms. On the other hand, there are forces at play that keep the offspring of a cell genetically relatively constant, unless there is selection for a particular characteristic. The most common mechanisms behind mutations that can appear in a bacterial population are briefly introduced. Next, it is explained why nevertheless such mutations are rarely observed, as long as single colonies are randomly selected, unless selective pressures apply. Since quality control of industrial bacterial cultures is likely to depend heavily on genome sequencing in the near future, the accuracy of whole‐genomic sequencing technologies is also discussed. It can be concluded that the bacteriologists who started picking single colonies from agar plates more than hundred years ago were unknowingly ingeneous, as their practice maintains a bacterial culture stable over time. Significance and Impact of Study The questions addressed here are relevant for industries that depend on live bacteria for (manufacturing of) their products, as they have to guard their bacterial cultures that remain unchanged over time. The explanation why randomly selection of single colonies keeps a population stable can be of use in bacteriology courses. The limitations of whole‐genome sequencing are relevant to legislators to avoid overinterpretation of those data.
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Affiliation(s)
- T M Wassenaar
- Molecular Microbiology and Genomics Consultants, Zotzenheim, Germany
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14
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Fussbroich D, Colas RA, Eickmeier O, Trischler J, Jerkic SP, Zimmermann K, Göpel A, Schwenger T, Schaible A, Henrich D, Baer P, Zielen S, Dalli J, Beermann C, Schubert R. A combination of LCPUFA ameliorates airway inflammation in asthmatic mice by promoting pro-resolving effects and reducing adverse effects of EPA. Mucosal Immunol 2020; 13:481-492. [PMID: 31907365 PMCID: PMC7181394 DOI: 10.1038/s41385-019-0245-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/24/2019] [Accepted: 12/02/2019] [Indexed: 02/04/2023]
Abstract
Lipid mediators derived from omega (n)-3 and n-6 long-chain polyunsaturated fatty acids (LCPUFA) play key roles in bronchoconstriction, airway inflammation, and resolution processes in asthma. This study compared the effects of dietary supplementation with either a combination of LCPUFAs or eicosapentaenoic acid (EPA) alone to investigate whether the combination has superior beneficial effects on the outcome of asthmatic mice. Mice were sensitized with house dust mite (HDM) extract, and subsequently supplemented with either a combination of LCPUFAs or EPA alone in a recall asthma model. After the final HDM and LCPUFA administration, airway hyperresponsiveness (AHR), bronchoalveolar lavages, and lung histochemistry were examined. Lipid mediator profiles were determined by liquid chromatography coupled with tandem mass spectrometry (LC-MS-MS). The LCPUFA combination reduced AHR, eosinophilic inflammation, and inflammatory cytokines (IL-5, IFN-γ, and IL-6) in asthmatic mice, whereas EPA enhanced inflammation. The combination of LCPUFAs was more potent in downregulating EPA-derived LTB5 and LTC5 and in supporting DHA-derived RvD1 and RvD4 (2.22-fold and 2.58-fold higher levels) than EPA alone. Ex vivo experiments showed that LTB5 contributes to granulocytes' migration and M1-polarization in monocytes. Consequently, the LCPUFA combination ameliorated airway inflammation by inhibiting adverse effects of EPA and promoting pro-resolving effects supporting the lipid mediator-dependent resolution program.
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Affiliation(s)
- D. Fussbroich
- grid.430588.2Department of Food Technology, University of Applied Sciences Fulda, Fulda, Germany ,0000 0004 1936 9721grid.7839.5Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe-University, Frankfurt/Main, Germany ,0000 0004 1936 9721grid.7839.5Faculty of Biological Sciences, Goethe University Frankfurt/Main, Frankfurt/Main, Germany
| | - R. A. Colas
- 0000 0001 2171 1133grid.4868.2Lipid Mediator Unit, William Harvey Research Institute, Bart’s and the London School of Medicine, Queen Mary University of London, London, UK
| | - O. Eickmeier
- 0000 0004 1936 9721grid.7839.5Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe-University, Frankfurt/Main, Germany
| | - J. Trischler
- 0000 0004 1936 9721grid.7839.5Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe-University, Frankfurt/Main, Germany
| | - S. P. Jerkic
- 0000 0004 1936 9721grid.7839.5Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe-University, Frankfurt/Main, Germany
| | - K. Zimmermann
- grid.430588.2Department of Food Technology, University of Applied Sciences Fulda, Fulda, Germany
| | - A. Göpel
- grid.430588.2Department of Food Technology, University of Applied Sciences Fulda, Fulda, Germany
| | - T. Schwenger
- grid.430588.2Department of Food Technology, University of Applied Sciences Fulda, Fulda, Germany
| | - A. Schaible
- 0000 0004 1936 9721grid.7839.5Department of Trauma, Hand & Reconstructive Surgery, Goethe-University, Frankfurt/Main, Germany
| | - D. Henrich
- 0000 0004 1936 9721grid.7839.5Department of Trauma, Hand & Reconstructive Surgery, Goethe-University, Frankfurt/Main, Germany
| | - P. Baer
- 0000 0004 1936 9721grid.7839.5Division of Nephrology, Department of Internal Medicine III, Goethe-University, Frankfurt/Main, Germany
| | - S. Zielen
- 0000 0004 1936 9721grid.7839.5Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe-University, Frankfurt/Main, Germany
| | - J. Dalli
- 0000 0001 2171 1133grid.4868.2Lipid Mediator Unit, William Harvey Research Institute, Bart’s and the London School of Medicine, Queen Mary University of London, London, UK ,0000 0001 2171 1133grid.4868.2Centre for inflammation and Therapeutic Innovation, Queen Mary University of London, London, UK
| | - C. Beermann
- grid.430588.2Department of Food Technology, University of Applied Sciences Fulda, Fulda, Germany
| | - R. Schubert
- 0000 0004 1936 9721grid.7839.5Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe-University, Frankfurt/Main, Germany
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Frost F, Kacprowski T, Rühlemann M, Bang C, Franke A, Zimmermann K, Nauck M, Völker U, Völzke H, Biffar R, Schulz C, Mayerle J, Weiss FU, Homuth G, Lerch MM. Helicobacter pylori infection associates with fecal microbiota composition and diversity. Sci Rep 2019; 9:20100. [PMID: 31882864 PMCID: PMC6934578 DOI: 10.1038/s41598-019-56631-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/29/2019] [Indexed: 12/16/2022] Open
Abstract
Helicobacter (H.) pylori is the most important cause for peptic ulcer disease and a risk factor for gastric carcinoma. How colonization with H. pylori affects the intestinal microbiota composition in humans is unknown. We investigated the association of H. pylori infection with intestinal microbiota composition in the population-based cohort Study-of-Health-in-Pomerania (SHIP)-TREND. Anti-H. pylori serology and H. pylori stool antigen tests were used to determine the H. pylori infection status. The fecal microbiota composition of 212 H. pylori positive subjects and 212 matched negative control individuals was assessed using 16S rRNA gene sequencing. H. pylori infection was found to be significantly associated with fecal microbiota alterations and a general increase in fecal microbial diversity. In infected individuals, the H. pylori stool antigen load determined a larger portion of the microbial variation than age or sex. The highest H. pylori stool antigen loads were associated with a putatively harmful microbiota composition. This study demonstrates profound alterations in human fecal microbiota of H. pylori infected individuals. While the increased microbiota diversity associated with H. pylori infection as well as changes in abundance of specific genera could be considered to be beneficial, others may be associated with adverse health effects, reflecting the complex relationship between H. pylori and its human host.
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Affiliation(s)
- Fabian Frost
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Tim Kacprowski
- Department of Functional Genomics, Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany.,Research Group Computational Systems Medicine, Chair of Experimental Bioinformatics, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Malte Rühlemann
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Corinna Bang
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Kathrin Zimmermann
- Friedrich Loeffler Institute of Medical Microbiology, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- Department of Functional Genomics, Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Reiner Biffar
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University of Greifswald, Greifswald, Germany
| | - Christian Schulz
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Julia Mayerle
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany.,Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Frank U Weiss
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Georg Homuth
- Department of Functional Genomics, Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Markus M Lerch
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany.
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Gavalec M, Ponce D, Zimmermann K. Steady states in the scheduling of discrete-time systems. Inf Sci (N Y) 2019. [DOI: 10.1016/j.ins.2018.12.067] [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: 11/16/2022]
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17
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Fussbroich D, Zimmermann K, Göpel A, Eickmeier O, Trischler J, Zielen S, Schubert R, Beermann C. A specific combined long-chain polyunsaturated fatty acid supplementation reverses fatty acid profile alterations in a mouse model of chronic asthma. Lipids Health Dis 2019; 18:16. [PMID: 30658644 PMCID: PMC6339374 DOI: 10.1186/s12944-018-0947-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 12/17/2018] [Indexed: 12/31/2022] Open
Abstract
Background The immune-modulating potential of long-chain polyunsaturated fatty acids (LCPUFAs) based on their conversion into lipid mediators in inflammatory situations has been proven by several studies. Respecting the immune-modulative role of lipid mediators in bronchoconstriction, airway inflammation and resolution of inflammatory processes, LCPUFAs play an important role in asthma. To design a disease-specific and most beneficial LCPUFA supplementation strategy, it is essential to understand how asthma alters LCPUFA profiles. Therefore, this study characterizes the alterations of LCPUFA profiles induced by allergic asthma. In addition, this study explores whether a simple eicosapentaenoic acid (EPA) alone or a specific combined LCPUFA supplementation could restore imbalanced LCPUFA profiles. Methods Mice were sensitized with a daily dose of 40 μg house dust mite (HDM)-extract in a recall model and fed with either normal diet, EPA or a specific combined (sc)-LCPUFA supplementation containing EPA, docosahexaenoic acid (DHA), γ -linolenic acid (GLA) and stearidonic acid (SDA) for 24 days. After recall with HDM, mice were sacrificed and blood and lung tissue were collected. Fatty acid profiles were determined in plasma, blood cells and lung cells of asthmatic mice by capillary gas-chromatography. Results In lung cells of asthmatic mice, arachidonic acid (AA, p < 0.001) and DHA (p < 0.01) were increased while dihomo-γ-linolenic acid (DGLA, p < 0.05) was decreased. EPA supplementation increased only EPA (p < 0.001) and docosapentaenoic acid (DPA, p < 0.001), but neither DGLA nor DHA in lung cells of asthmatic mice. In contrast, a specific combined dietary supplementation containing n-3 and n-6 LCPUFAs could decrease AA (p < 0.001), increase EPA (p < 0.001), DPA (p < 0.001) and DHA (p < 0.01) and could reverse the lack of DGLA (p < 0.05). Conclusions In summary, allergic asthma alters LCPUFA profiles in blood and lung tissue. In contrast to the EPA supplementation, the distinct combination of n-3 and n-6 LCPUFAs restored the LCPUFA profiles in lung tissue of asthmatic mice completely. Subsequently, sc-LCPUFA supplementation is likely to be highly supportive in limiting and resolving the inflammatory process in asthma. Electronic supplementary material The online version of this article (10.1186/s12944-018-0947-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- D Fussbroich
- Department of Food Technology, University of Applied Science Fulda, Leipziger Str. 123, 36039, Fulda, Germany. .,Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe University, Theodor-Stern-Kai 7, Frankfurt/Main, Germany. .,Faculty of Biological Sciences, Goethe University, Max-von-Laue-Straße 13, Frankfurt/Main, Germany.
| | - K Zimmermann
- Department of Food Technology, University of Applied Science Fulda, Leipziger Str. 123, 36039, Fulda, Germany
| | - A Göpel
- Department of Food Technology, University of Applied Science Fulda, Leipziger Str. 123, 36039, Fulda, Germany
| | - O Eickmeier
- Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe University, Theodor-Stern-Kai 7, Frankfurt/Main, Germany
| | - J Trischler
- Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe University, Theodor-Stern-Kai 7, Frankfurt/Main, Germany
| | - S Zielen
- Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe University, Theodor-Stern-Kai 7, Frankfurt/Main, Germany
| | - R Schubert
- Division for Allergy, Pneumology and Cystic Fibrosis, Department for Children and Adolescence, Goethe University, Theodor-Stern-Kai 7, Frankfurt/Main, Germany
| | - C Beermann
- Department of Food Technology, University of Applied Science Fulda, Leipziger Str. 123, 36039, Fulda, Germany
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Schneidewind L, Neumann T, Zimmermann K, Weigel M, Schmidt CA, Krüger W. Is BK Virus-Associated Cystitis a Generalized Epithelial Disease? Acta Haematol 2019; 141:65-67. [PMID: 30605908 DOI: 10.1159/000494748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/22/2018] [Indexed: 12/25/2022]
Abstract
BK polyomavirus-associated haemorrhagic cystitis (BKHC) is a complication after allogeneic stem cell transplantation, which can occur in 5-60% of the cases. BK viruria alone can also occur in up to 100%. BKHC can lead to severe morbidity in stem cell-transplanted patients, but data about this disease is limited. Consequently, we conducted a prospective unicentric non-interventional trial on BKHC as well as BK viruria after first adult allogeneic stem cell transplantation with a follow-up time of 1 year after inpatient treatment. Between November 2013 and December 2015, we were able to include 40 adult patients with a mean age of 52.8 years. Twenty-seven (67.5%) of these patients were male and 13 (32.5%) were female. Acute myeloid leukaemia was the most frequent underlying disease (n = 15; 37.5%). Only 1 patient developed BKHC during inpatient treatment (n = 1; 2.5%), but BK viruria was frequent (n = 11; 27.5%) during inpatient treatment as well as in the follow-up time (n = 14; 35%). Interestingly, BK viruria was significantly associated with mucositis (p = 0.038) and number of transfused platelet concentrates (p = 0.001). This unexpected association will be discussed and needs further investigation.
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Affiliation(s)
- Laila Schneidewind
- Department of Haematology/Oncology, University Medicine Greifswald, Greifswald, Germany,
| | - Thomas Neumann
- Department of Haematology/Oncology, University Medicine Greifswald, Greifswald, Germany
| | - Kathrin Zimmermann
- Friedrich Löffler Institute of Medical Microbiology, University Medicine Greifswald, Greifswald, Germany
| | - Martin Weigel
- Department of Haematology/Oncology, University Medicine Greifswald, Greifswald, Germany
| | | | - William Krüger
- Department of Haematology/Oncology, University Medicine Greifswald, Greifswald, Germany
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Bogaardt MJ, Geelen A, Zimmermann K, Finglas P, Raats MM, Mikkelsen BE, Poppe KJ, van't Veer P. Designing a research infrastructure on dietary intake and its determinants. NUTR BULL 2018. [DOI: 10.1111/nbu.12342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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)
| | - A. Geelen
- Wageningen University; Wageningen The Netherlands
| | - K. Zimmermann
- Wageningen Economic Research; The Hague The Netherlands
| | - P. Finglas
- Quadram Institute Bioscience; Norwich UK
| | | | | | - K. J. Poppe
- Wageningen Economic Research; The Hague The Netherlands
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Scheer CS, Fuchs C, Gründling M, Vollmer M, Bast J, Bohnert JA, Zimmermann K, Hahnenkamp K, Rehberg S, Kuhn SO. Impact of antibiotic administration on blood culture positivity at the beginning of sepsis: a prospective clinical cohort study. Clin Microbiol Infect 2018; 25:326-331. [PMID: 29879482 DOI: 10.1016/j.cmi.2018.05.016] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [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: 03/15/2018] [Revised: 05/09/2018] [Accepted: 05/12/2018] [Indexed: 01/21/2023]
Abstract
OBJECTIVES Sepsis guidelines recommend obtaining blood cultures before starting anti-infective therapy in patients with sepsis. However, little is known of how antibiotic treatment before sampling affects bacterial growth. The aim of this study was to compare the results of blood cultures drawn before and during antibiotic therapy. METHODS Prospective clinical cohort study of septic patients. Adult intensive care unit patients with two or three blood culture sets at the beginning of sepsis between 2010 and 2017 were included. Patients with blood culture samples obtained before antibiotic therapy were compared with patients with samples taken during antibiotic therapy. Blood culture positivity, defined as presence of a microbiological pathogen, was compared between the groups. Logistic regression was performed to adjust the impact of different factors with respect to blood culture positivity. RESULTS In total, 559 patients with 1364 blood culture sets at the beginning of sepsis were analysed. Blood culture positivity was 50.6% (78/154) among patients with sepsis who did not receive antibiotics and only 27.7% (112/405) in those who were already receiving antibiotics (p <0.001). Logistic regression revealed antibiotic therapy as an independent factor for less pathogen identification (odds ratio 0.4; 95% CI 0.3-0.6). Gram-positive pathogens (28.3% (111/392) versus 11.9% (116/972); p <0.001) and also Gram-negative pathogens (16.3% (64/392) versus 9.3% (90/972); p <0.001) were more frequent in blood culture sets drawn before antibiotic therapy compared with sets obtained during antibiotic therapy. CONCLUSIONS Obtaining blood cultures during antibiotic therapy is associated with a significant loss of pathogen detection. This strongly emphasizes the current recommendation to obtain blood cultures before antibiotic administration in patients with sepsis.
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Affiliation(s)
- C S Scheer
- Department of Anesthesiology, University Hospital Greifswald, Germany.
| | - C Fuchs
- Department of Anesthesiology, University Hospital Greifswald, Germany
| | - M Gründling
- Department of Anesthesiology, University Hospital Greifswald, Germany
| | - M Vollmer
- Institute of Bioinformatics, University Hospital Greifswald, Germany
| | - J Bast
- Medical Faculty, University of Greifswald, Germany
| | - J A Bohnert
- Friedrich Loeffler Institute of Medical Microbiology, University Hospital Greifswald, Germany
| | - K Zimmermann
- Friedrich Loeffler Institute of Medical Microbiology, University Hospital Greifswald, Germany
| | - K Hahnenkamp
- Department of Anesthesiology, University Hospital Greifswald, Germany
| | - S Rehberg
- Department of Anesthesiology, University Hospital Greifswald, Germany
| | - S-O Kuhn
- Department of Anesthesiology, University Hospital Greifswald, Germany.
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Schneidewind L, Neumann T, Zimmermann K, Schmidt CA, Krüger W. Urological complications associated with adult allogeneic stem cell transplantation. Am J Hematol 2018; 93:E3-E4. [PMID: 28960479 DOI: 10.1002/ajh.24920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Laila Schneidewind
- Department of Hematology/Oncology; University Medicine Greifswald; Greifswald Germany
| | - Thomas Neumann
- Department of Hematology/Oncology; University Medicine Greifswald; Greifswald Germany
| | - Kathrin Zimmermann
- University Medicine Greifswald, Friedrich Löffler Institute of Medical Microbiology; Greifswald Germany
| | | | - William Krüger
- Department of Hematology/Oncology; University Medicine Greifswald; Greifswald Germany
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Affiliation(s)
- Hannelore Bernhardt
- Klinik und Poliklinik für Innere Medizin A; Ernst-Moritz-Arndt-Universität; Greifswald Germany
| | - Kathrin Zimmermann
- Klinik und Poliklinik für Innere Medizin A; Ernst-Moritz-Arndt-Universität; Greifswald Germany
| | - M. Knoke
- Klinik und Poliklinik für Innere Medizin A; Ernst-Moritz-Arndt-Universität; Greifswald Germany
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Muchitsch EM, Turecek PL, Zimmermann K, Pichler L, Auer W, Richter G, Gritsch H, Schwarz HP. Phenotypic Expression of Murine Hemophilia. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1614401] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kadala A, Sotelo-Hitschfeld P, Ahmad Z, Tripal P, Schmid B, Mueller A, Bernal L, Winter Z, Brauchi S, Lohbauer U, Messlinger K, Lennerz JK, Zimmermann K. Fluorescent Labeling and 2-Photon Imaging of Mouse Tooth Pulp Nociceptors. J Dent Res 2017; 97:460-466. [PMID: 29130364 DOI: 10.1177/0022034517740577] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Retrograde fluorescent labeling of dental primary afferent neurons (DPANs) has been described in rats through crystalline fluorescent DiI, while in the mouse, this technique was achieved with only Fluoro-Gold, a neurotoxic fluorescent dye with membrane penetration characteristics superior to the carbocyanine dyes. We reevaluated this technique in the rat with the aim to transfer it to the mouse because comprehensive physiologic studies require access to the mouse as a model organism. Using conventional immunohistochemistry, we assessed in rats and mice the speed of axonal dye transport from the application site to the trigeminal ganglion, the numbers of stained DPANs, and the fluorescence intensity via 1) conventional crystalline DiI and 2) a novel DiI formulation with improved penetration properties and staining efficiency. A 3-dimensional reconstruction of an entire trigeminal ganglion with 2-photon laser scanning fluorescence microscopy permitted visualization of DPANs in all 3 divisions of the trigeminal nerve. We quantified DPANs in mice expressing the farnesylated enhanced green fluorescent protein (EGFPf) from the transient receptor potential cation channel subfamily M member 8 (TRPM8EGFPf/+) locus in the 3 branches. We also evaluated the viability of the labeled DPANs in dissociated trigeminal ganglion cultures using calcium microfluorometry, and we assessed the sensitivity to capsaicin, an agonist of the TRPV1 receptor. Reproducible DiI labeling of DPANs in the mouse is an important tool 1) to investigate the molecular and functional specialization of DPANs within the trigeminal nociceptive system and 2) to recognize exclusive molecular characteristics that differentiate nociception in the trigeminal system from that in the somatic system. A versatile tool to enhance our understanding of the molecular composition and characteristics of DPANs will be essential for the development of mechanism-based therapeutic approaches for dentine hypersensitivity and inflammatory tooth pain.
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Affiliation(s)
- A Kadala
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - P Sotelo-Hitschfeld
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
- 2 Instituto de Fisiología, Facultad de Medicina, Escuela de Graduados, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Z Ahmad
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - P Tripal
- 3 Optical Imaging Centre Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - B Schmid
- 3 Optical Imaging Centre Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - A Mueller
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - L Bernal
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Z Winter
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - S Brauchi
- 2 Instituto de Fisiología, Facultad de Medicina, Escuela de Graduados, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - U Lohbauer
- 4 Klinik für Zahnerhaltung und Parodontologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - K Messlinger
- 5 Institut für Physiologie und Pathophysiologie, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - J K Lennerz
- 6 Center for Integrated Diagnostics, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - K Zimmermann
- 1 Klinik für Anästhesiologie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
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Belle F, Wenke-Zobler J, Cignacco E, Ammann R, Kuehni C, Zimmermann K. OR50: Overweight in Childhood Cancer Patients at Diagnosis and Throughout Therapy: A Multicentre Cohort Study. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30737-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zimmermann K, von Bastian CC, Röcke C, Martin M, Eschen A. Transfer after process-based object-location memory training in healthy older adults. Psychol Aging 2017; 31:798-814. [PMID: 27831716 DOI: 10.1037/pag0000123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 11/08/2022]
Abstract
A substantial part of age-related episodic memory decline has been attributed to the decreasing ability of older adults to encode and retrieve associations among simultaneously processed information units from long-term memory. In addition, this ability seems to share unique variance with reasoning. In this study, we therefore examined whether process-based training of the ability to learn and remember associations has the potential to induce transfer effects to untrained episodic memory and reasoning tasks in healthy older adults (60-75 years). For this purpose, the experimental group (n = 36) completed 30 sessions of process-based object-location memory training, while the active control group (n = 31) practiced visual perception on the same material. Near (spatial episodic memory), intermediate (verbal episodic memory), and far transfer effects (reasoning) were each assessed with multiple tasks at four measurements (before, midway through, immediately after, and 4 months after training). Linear mixed-effects models revealed transfer effects on spatial episodic memory and reasoning that were still observed 4 months after training. These results provide first empirical evidence that process-based training can enhance healthy older adults' associative memory performance and positively affect untrained episodic memory and reasoning abilities. (PsycINFO Database Record
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Affiliation(s)
- Kathrin Zimmermann
- International Normal Aging and Plasticity Center (INAPIC), University of Zurich
| | - Claudia C von Bastian
- Cognition and Cognitive Neuroscience Research Centre, Department of Psychology, Bournemouth University
| | - Christina Röcke
- University Research Priority Program "Dynamics of Healthy Aging," University of Zurich
| | - Mike Martin
- University Research Priority Program "Dynamics of Healthy Aging", University of Zurich
| | - Anne Eschen
- International Normal Aging and Plasticity Center (INAPIC) ", University of Zurich
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Schneidewind L, Neumann T, Knoll F, Zimmermann K, Smola S, Schmidt CA, Krüger W. Are the Polyomaviruses BK and JC Associated with Opportunistic Infections, Graft-versus-Host Disease, or Worse Outcomes in Adult Patients Receiving Their First Allogeneic Stem Cell Transplantation with Low-Dose Alemtuzumab? Acta Haematol 2017; 138:3-9. [PMID: 28591758 DOI: 10.1159/000468972] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/05/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND The association of polyomaviruses BK and JC with other opportunistic infections and graft-versus-host disease (GvHD) in allogeneic stem cell transplantation is controversially discussed. METHODS We conducted a retrospective study of 64 adult patients who received their first allogeneic stem cell transplantation between March 2010 and December 2014; the follow-up time was 2 years. RESULTS Acute leukemia was the most frequent underlying disease (45.3%), and conditioning included myeloablative (67.2%) and nonmyeloablative protocols (32.8%). All patients received 10 mg of alemtuzumab on day -2 (20 mg in case of mismatch) as GvHD prophylaxis. Twenty-seven patients (41.5%) developed cytomegalovirus (CMV) reactivation. BKPyV-associated hemorrhagic cystitis was diagnosed in 10 patients (15.6%). Other opportunistic infections caused by viruses or protozoa occurred rarely (<10%). There was no association of BKPyV or JCPyV with CMV reactivation, Epstein-Barr virus reactivation, human herpes virus 6, or parvovirus B19 infection requiring treatment. There was a significant correlation of BKPyV-associated hemorrhagic cystitis with toxoplasmosis (p = 0.013). Additionally, there was a significant link of simultaneous BKPyV and JCPyV viruria with toxoplasmosis (p = 0.047). BKPyV and JCPyV were not associated with GvHD, relapse, or death. CONCLUSION We found no association of BKPyV or JCPyV with viral infections or GvHD. Only the correlation of both polyomaviruses with toxoplasmosis was significant. This is a novel and interesting finding.
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Affiliation(s)
- Laila Schneidewind
- Institute of Virology, Saarland University Medical Center, Saarland University, Homburg/Saar, Germany
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28
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Noyan F, Zimmermann K, Hardtke-Wolenski M, Knoefel A, Schulde E, Geffers R, Hust M, Huehn J, Galla M, Morgan M, Jokuszies A, Manns MP, Jaeckel E. Prevention of Allograft Rejection by Use of Regulatory T Cells With an MHC-Specific Chimeric Antigen Receptor. Am J Transplant 2017; 17:917-930. [PMID: 27997080 DOI: 10.1111/ajt.14175] [Citation(s) in RCA: 195] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 12/02/2016] [Accepted: 12/07/2016] [Indexed: 01/25/2023]
Abstract
CD4+ CD25high FOXP3+ regulatory T cells (Tregs) are involved in graft-specific tolerance after solid organ transplantation. However, adoptive transfer of polyspecific Tregs alone is insufficient to prevent graft rejection even in rodent models, indicating that graft-specific Tregs are required. We developed a highly specific chimeric antigen receptor that recognizes the HLA molecule A*02 (referred to as A2-CAR). Transduction into natural regulatory T cells (nTregs) changes the specificity of the nTregs without alteration of their regulatory phenotype and epigenetic stability. Activation of nTregs via the A2-CAR induced proliferation and enhanced the suppressor function of modified nTregs. Compared with nTregs, A2-CAR Tregs exhibited superior control of strong allospecific immune responses in vitro and in humanized mouse models. A2-CAR Tregs completely prevented rejection of allogeneic target cells and tissues in immune reconstituted humanized mice in the absence of any immunosuppression. Therefore, these modified cells have great potential for incorporation into clinical trials of Treg-supported weaning after allogeneic transplantation.
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Affiliation(s)
- F Noyan
- Department of Gastroenterology, Hepatology & Endocrinology, Hannover Medical School, Hannover, Germany.,Integrated Research and Treatment Center, Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - K Zimmermann
- Department of Gastroenterology, Hepatology & Endocrinology, Hannover Medical School, Hannover, Germany
| | - M Hardtke-Wolenski
- Department of Gastroenterology, Hepatology & Endocrinology, Hannover Medical School, Hannover, Germany
| | - A Knoefel
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - E Schulde
- Department of Gastroenterology, Hepatology & Endocrinology, Hannover Medical School, Hannover, Germany
| | - R Geffers
- RG of Genome Analytics, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - M Hust
- Department of Biotechnology, Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Braunschweig, Germany
| | - J Huehn
- Department of Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - M Galla
- Institute of Experimental Haematology, Hannover Medical School, Hannover, Germany
| | - M Morgan
- Institute of Experimental Haematology, Hannover Medical School, Hannover, Germany
| | - A Jokuszies
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - M P Manns
- Department of Gastroenterology, Hepatology & Endocrinology, Hannover Medical School, Hannover, Germany
| | - E Jaeckel
- Department of Gastroenterology, Hepatology & Endocrinology, Hannover Medical School, Hannover, Germany.,Integrated Research and Treatment Center, Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
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Kaden H, Zimmermann K, Hofmann H. Zur Charakterisierung des Porenaufbaus von Asbestfilterschichten durch elektrische Leitfähigkeitsmessungen. Z PHYS CHEM 2017. [DOI: 10.1515/zpch-1981-26265] [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: 11/15/2022]
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Belle F, Schindler M, Sommer G, Kasteler R, Kuonen R, Bochud M, Zimmermann K, Ammann R, Kuehni C. SUN-P215: Overweight and Obesity in Swiss Childhood Leukaemia Survivors. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30558-1] [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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31
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Zimmermann K, Eschen A. Brain regions involved in subprocesses of small-space episodic object-location memory: a systematic review of lesion and functional neuroimaging studies. Memory 2016; 25:487-519. [DOI: 10.1080/09658211.2016.1188965] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Kathrin Zimmermann
- International Normal Aging and Plasticity Center (INAPIC), University of Zurich, Zurich, Switzerland
- Department of Gerontopsychology, University of Zurich, Zurich, Switzerland
- University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, Zurich, Switzerland
| | - Anne Eschen
- International Normal Aging and Plasticity Center (INAPIC), University of Zurich, Zurich, Switzerland
- University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, Zurich, Switzerland
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Zimmermann K, Eggenberger N, Leibundgut K, Steinlin M, Heinks T. QOS-16THE INFLUENCE OF YOUNG AGE AT DIAGNOSIS FOR COGNITIVE PERFORMANCE IN BRAIN TUMOR PATIENTS BEFORE TREATMENT. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now081.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Landerer J, Damm M, Caca K, Zimmermann K, Merk T. Fallbericht: Vom metastasierten Tumor zur isolierten Tuberkulose. Pneumologie 2016. [DOI: 10.1055/s-0036-1572219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Engelbrecht B, Klein A, Breitbach M, Parikh A, Lee J, Zimmermann K, Ottersbach A, Dürr D, Welz A, Pfeifer A, Salama G, Kotlikoff M, Fleischmann B, Röll W. Long-term Reduction of Post-infarct Ventricular Tachycardia by Direct Lentiviral Connexin 43 Gene Transfer. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Zimmermann K, Bastidas S, Knecht L, Kuster H, Vavricka SR, Günthard HF, Oxenius A. Gut commensal microbes do not represent a dominant antigenic source for continuous CD4+ T-cell activation during HIV-1 infection. Eur J Immunol 2015; 45:3107-13. [PMID: 26345361 DOI: 10.1002/eji.201545940] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/20/2015] [Accepted: 09/08/2015] [Indexed: 11/06/2022]
Abstract
Chronic immune activation is a hallmark of HIV-1 infection; specifically, the activation of T cells has predictive value for progression to AIDS. The majority of hyperactivated T cells are not HIV-specific and their antigenic specificities remain poorly understood. Translocation of gut luminal microbial products to systemic sites contributes to chronic immune activation during HIV-1 infection, but how it affects (TCR-dependent) immune activation remains elusive. We hypothesized that gut luminal antigens foster activation of CD4(+) T cells with specificities for commensal bacterial antigens, thereby contributing to the pool of activated CD4(+) T cells in the circulation of HIV-1 infected individuals. To test this hypothesis, we quantified the frequencies of gut microbe-specific CD4(+) T cells by cytokine production upon restimulation with selected gut commensal microbial antigens. Contrary to our hypothesis, we did not observe increased but rather decreased frequencies of gut microbe-specific CD4(+) T cells in HIV-1 infected individuals compared to healthy controls. We conclude that the increased activation status of circulating CD4(+) T cells in HIV-1 infected individuals is not driven by CD4(+) T cells with specificities for commensal bacterial antigens.
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Affiliation(s)
| | - Sonia Bastidas
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Leandra Knecht
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Herbert Kuster
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Stephan R Vavricka
- Division of Gastroenterology and Hepatology, Triemli Hospital, Zurich, Switzerland
| | - Huldrych F Günthard
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Institute of Medical Virology, University of Zurich, Zurich, Switzerland
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Mayer P, Zilleßen P, Harst A, Celner J, Zimmermann K, Pfeifer A, Racké K. Expression und Freisetzung von DPP4 in humanen subkutanen Präadipozyten und Adipozyten. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549597] [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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Kaspar F, Zimmermann K, Polte-Rudolf C. An overview of the phenological observation network and the phenological database of Germany's national meteorological service (Deutscher Wetterdienst). Adv Sci Res 2015. [DOI: 10.5194/asr-11-93-2014] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. First phenological observations have been performed in Germany already in the 18th century. The onset dates of characteristic phases of plant development (phenological phases) are observed and recorded. Today, Germany's national meteorological service (Deutscher Wetterdienst, DWD) maintains a dense phenological observation network and a database with phenological observations. The data are used in many applications, esp. for advisory activities to agriculture or pollen dispersion information.
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Kruijff G, Kruijff-Korbayová I, Keshavdas S, Larochelle B, Janíček M, Colas F, Liu M, Pomerleau F, Siegwart R, Neerincx M, Looije R, Smets N, Mioch T, van Diggelen J, Pirri F, Gianni M, Ferri F, Menna M, Worst R, Linder T, Tretyakov V, Surmann H, Svoboda T, Reinštein M, Zimmermann K, Petříček T, Hlaváč V. Designing, developing, and deploying systems to support human–robot teams in disaster response. Adv Robot 2014. [DOI: 10.1080/01691864.2014.985335] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zimmermann K, Liechti T, Haas A, Rehr M, Trkola A, Günthard HF, Oxenius A. The orientation of HIV-1 gp120 binding to the CD4 receptor differentially modulates CD4+ T cell activation. J Immunol 2014; 194:637-49. [PMID: 25472996 DOI: 10.4049/jimmunol.1401863] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Progressive quantitative and qualitative decline of CD4(+) T cell responses is one hallmark of HIV-1 infection and likely depends on several factors, including a possible contribution by the HIV-1 envelope glycoprotein gp120, which binds with high affinity to the CD4 receptor. Besides virion-associated and cell-expressed gp120, considerable amounts of soluble gp120 are found in plasma or lymphoid tissue, predominantly in the form of gp120-anti-gp120 immune complexes (ICs). Because the functional consequences of gp120 binding to CD4(+) T cells are controversially discussed, we investigated how gp120 affects TCR-mediated activation of human CD4(+) T cells by agonistic anti-CD3 mAb or by HLA class II-presented peptide Ags. We show that the spatial orientation of gp120-CD4 receptor binding relative to the site of TCR engagement differentially affects TCR signaling efficiency and hence CD4(+) T cell activation. Whereas spatially and temporally linked CD4 and TCR triggering at a defined site promotes CD4(+) T cell activation by exceeding local thresholds for signaling propagation, CD4 receptor engagement by gp120-containing ICs all around the CD4(+) T cell undermine its capacity in supporting proximal TCR signaling. In vitro, gp120 ICs are efficiently captured by CD4(+) T cells and thereby render them hyporesponsive to TCR stimulation. Consistent with these in vitro results we show that CD4(+) T cells isolated from HIV(+) individuals are covered with ICs, which at least partially contain gp120, and suggest that IC binding to CD4 receptors might contribute to the progressive decline of CD4(+) T cell function during HIV-1 infection.
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Affiliation(s)
- Kathrin Zimmermann
- Institute of Microbiology, Swiss Federal Institute of Technology Zurich, 8093 Zurich, Switzerland
| | - Thomas Liechti
- Institute of Medical Virology, University of Zurich, 8006 Zurich, Switzerland; and
| | - Anna Haas
- Institute of Microbiology, Swiss Federal Institute of Technology Zurich, 8093 Zurich, Switzerland
| | - Manuela Rehr
- Institute of Microbiology, Swiss Federal Institute of Technology Zurich, 8093 Zurich, Switzerland
| | - Alexandra Trkola
- Institute of Medical Virology, University of Zurich, 8006 Zurich, Switzerland; and
| | - Huldrych F Günthard
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland
| | - Annette Oxenius
- Institute of Microbiology, Swiss Federal Institute of Technology Zurich, 8093 Zurich, Switzerland
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Zimmermann K. 16. How sodium channel activator ciguatoxins cause burning pain from cooling. Toxicon 2014. [DOI: 10.1016/j.toxicon.2014.08.024] [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: 11/29/2022]
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Wassenaar T, Beimfohr C, Geske T, Zimmermann K. Voluntarily exposure to a single, high dose of probiotic Escherichia coli results in prolonged colonisation. Benef Microbes 2014; 5:367-75. [DOI: 10.3920/bm2013.0087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The ability of probiotic Escherichia coli to colonise the human gut was determined in a volunteer study following national (German) regulations. Five persons voluntarily took a single, high dose of Symbioflor®2, which contains 6 different probiotic E. coli genotypes, to assess tolerance of the product, after which presence of E. coli in their faeces was tested for a follow-up period of 30 weeks. Intake of the product did not result in severe side effect in any of the individuals, though mild side effects were observed. Stool analysis showed that the probiotic E. coli had colonised all five persons for a period of 10 to 30 weeks (mean: 18.7 weeks, median: 25.7 weeks). In two individuals there was evidence of competition between host E. coli and probiotic E. coli, while in two others total E. coli levels increased persistently with at least a factor of 10 as a result of the received dose. In one individual, who had lacked detectable levels of faecal E. coli at the start of the post-authorisation safety study, long-term colonisation was established, first by probiotic E. coli exclusively, which were later replaced by host E. coli strains. In four out of five individuals, total E. coli faecal counts were higher on average than at the start of the experiment, while in none total levels exceeded 5×107 cfu/g. When the specific genotypes of the 6 probiotic E. coli were analysed, it was found that one and the same common genotype was responsible for prolonged colonisation in all five individuals.
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Affiliation(s)
- T.M. Wassenaar
- Molecular Microbiology and Genomics Consultants, Tannenstrasse 7, 55576 Zotzenheim, Germany
| | - C. Beimfohr
- Vermicon AG, Emmy-Noether-Straße 2, 80992 München, Germany
| | - T. Geske
- Medical Services, Hennigsdorfer Str. 141S, 13503 Berlin, Germany
| | - K. Zimmermann
- SymbioPharm GmbH, Auf den Lüppen 8, 35745 Herborn, Germany
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Enck P, Zimmermann K, Menke G, Klosterhalfen S. Randomized Controlled Treatment Trial of Irritable Bowel Syndrome with a Probiotic E.-coli Preparation (DSM17252) Compared to Placebo. Z Gastroenterol 2014; 52:64. [PMID: 24964039 DOI: 10.1055/s-0034-1366796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- P Enck
- Internal Medicine VI, University Medical Hospital, Tübingen
| | | | - G Menke
- PAZ Arzneimittel-Entwicklungsgesellschaft mbH, Frankfurt/M
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Pullwitt A, Leichsenring G, Zimmermann K, Schnabel J. Systemische Methotrexat Therapie bei intramuraler Schwangerschaft – Fallbericht. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1376466] [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: 10/25/2022] Open
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Zilleßen P, Harst A, Celner J, Zimmermann K, Pfeifer A, Racké K, Mayer P. Die Rolle der Dipeptidyl-Peptidase 4 in humanen weißen subkutanen Präadipozyten. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374885] [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: 10/25/2022]
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Ottersbach A, Zimmermann K, Mykhaylyk O, Gleich B, Plank C, Bloch W, Pfeifer A, Welz A, Fleischmann B, Röll W. Site-specific positioning of magnetic nanoparticle (MNP) loaded progenitors improves survival of the grafted cells and long-term myocardial function upon myocardial infarction. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1367202] [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: 10/25/2022]
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Kruijff GJM, Janíček M, Keshavdas S, Larochelle B, Zender H, Smets NJJM, Mioch T, Neerincx MA, Diggelen JV, Colas F, Liu M, Pomerleau F, Siegwart R, Hlaváč V, Svoboda T, Petříček T, Reinstein M, Zimmermann K, Pirri F, Gianni M, Papadakis P, Sinha A, Balmer P, Tomatis N, Worst R, Linder T, Surmann H, Tretyakov V, Corrao S, Pratzler-Wanczura S, Sulk M. Experience in System Design for Human-Robot Teaming in Urban Search and Rescue. Springer Tracts in Advanced Robotics 2014. [DOI: 10.1007/978-3-642-40686-7_8] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hill M, Hirschberger J, Zimmermann K, Dörfelt R, Reese S, Wergin M. [Quality of life in primary and adjuvant veterinary radiation therapy. An owner survey]. Tierarztl Prax Ausg K Kleintiere Heimtiere 2014; 42:157-165. [PMID: 24920142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 02/05/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVE External radiation therapy has been available since 2011 for small animals at the University of Munich. The aim of the study was to evaluate the quality of life of treated pets and the satisfaction of their owners. MATERIAL AND METHODS The questionnaire was sent to the owners of all the pets (n = 91) that had undergone primary or adjuvant radiotherapy at the Clinic of Small Animal Medicine, University of Munich, since April 2011. RESULTS The questionnaire was returned by 68 (74.7%) owners. According to their assessment, the quality of life improved in 41 cases (60.3%) after treatment where- as in 13 patients (19.1%) a decline was described. The majority of owners (88.2%) would have decided for repeated radiation therapy. CONCLUSION Improvement of the animals' quality of life is related to a high satisfaction (83.8%) of the owners (p = 0.003) and their positive attitude towards radiotherapy (p = 0.027). CLINICAL RELEVANCE Analyses showed that for these owners, the treatment was a worthwhile therapy despite it requiring much time and money.
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Affiliation(s)
- M Hill
- Melanie Hill, Medizinische Kleintierklinik, der Ludwig-Maximilians-Universität München, Veterinärstraße 13, 80539 München, E-Mail:
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Skarzynski H, van de Heyning P, Agrawal S, Arauz SL, Atlas M, Baumgartner W, Caversaccio M, de Bodt M, Gavilan J, Godey B, Green K, Gstoettner W, Hagen R, Han DM, Kameswaran M, Karltorp E, Kompis M, Kuzovkov V, Lassaletta L, Levevre F, Li Y, Manikoth M, Martin J, Mlynski R, Mueller J, O'Driscoll M, Parnes L, Prentiss S, Pulibalathingal S, Raine CH, Rajan G, Rajeswaran R, Rivas JA, Rivas A, Skarzynski PH, Sprinzl G, Staecker H, Stephan K, Usami S, Yanov Y, Zernotti ME, Zimmermann K, Lorens A, Mertens G. Towards a consensus on a hearing preservation classification system. Acta Otolaryngol 2013:3-13. [PMID: 24328756 DOI: 10.3109/00016489.2013.869059] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [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: 11/13/2022]
Abstract
CONCLUSION The comprehensive Hearing Preservation classification system presented in this paper is suitable for use for all cochlear implant users with measurable pre-operative residual hearing. If adopted as a universal reporting standard, as it was designed to be, it should prove highly beneficial by enabling future studies to quickly and easily compare the results of previous studies and meta-analyze their data. OBJECTIVES To develop a comprehensive Hearing Preservation classification system suitable for use for all cochlear implant users with measurable pre-operative residual hearing. METHODS The HEARRING group discussed and reviewed a number of different propositions of a HP classification systems and reviewed critical appraisals to develop a qualitative system in accordance with the prerequisites. RESULTS The Hearing Preservation Classification System proposed herein fulfills the following necessary criteria: 1) classification is independent from users' initial hearing, 2) it is appropriate for all cochlear implant users with measurable pre-operative residual hearing, 3) it covers the whole range of pure tone average from 0 to 120 dB; 4) it is easy to use and easy to understand.
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Kaspar F, Müller-Westermeier G, Penda E, Mächel H, Zimmermann K, Kaiser-Weiss A, Deutschländer T. Monitoring of climate change in Germany – data, products and services of Germany's National Climate Data Centre. Adv Sci Res 2013. [DOI: 10.5194/asr-10-99-2013] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. Germany's national meteorological service (Deutscher Wetterdienst, DWD) is the responsible authority for monitoring climate change in Germany. To fulfill this task it operates the National Climate Data Centre ("Nationales KlimaDatenZentrum, NKDZ"). The historical and current instrumental measurements and visual observations of DWD's station network are archived, quality-controlled and used to provide aggregated products, as for example daily and monthly means or climate normals. Gridded data are generated and used to derive time series of national and regional averages. Phenological observations and radiosonde data are also part of the data base. In recent years, additional historical data have been digitized to expand the data base. The products are used for informing the public, e.g. as an element of the German climate atlas (http://www.deutscher-klimaatlas.de). One major recent activity was the provision of information for the new climatological reference interval 1981–2010 and an updated climatological analysis based on the newly digitized data.
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Mayerle J, den Hoed CM, Schurmann C, Stolk L, Homuth G, Peters MJ, Capelle LG, Zimmermann K, Rivadeneira F, Gruska S, Völzke H, de Vries AC, Völker U, Teumer A, van Meurs JBJ, Steinmetz I, Nauck M, Ernst F, Weiss FU, Hofman A, Zenker M, Kroemer HK, Prokisch H, Uitterlinden AG, Lerch MM, Kuipers EJ. Identification of genetic loci associated with Helicobacter pylori serologic status. JAMA 2013; 309:1912-20. [PMID: 23652523 DOI: 10.1001/jama.2013.4350] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
IMPORTANCE Helicobacter pylori is a major cause of gastritis and gastroduodenal ulcer disease and can cause cancer. H. pylori prevalence is as high as 90% in some developing countries but 10% of a given population is never colonized, regardless of exposure. Genetic factors are hypothesized to confer H. pylori susceptibility. OBJECTIVE To identify genetic loci associated with H. pylori seroprevalence in 2 independent population-based cohorts and to determine their putative pathophysiological role by whole-blood RNA gene expression profiling. DESIGN, SETTING, AND PARTICIPANTS Two independent genome-wide association studies (GWASs) and a subsequent meta-analysis were conducted for anti-H. pylori IgG serology in the Study of Health in Pomerania (SHIP) (recruitment, 1997-2001 [n = 3830]) as well as the Rotterdam Study (RS-I) (recruitment, 1990-1993) and RS-II (recruitment, 2000-2001 [n = 7108]) populations. Whole-blood RNA gene expression profiles were analyzed in RS-III (recruitment, 2006-2008 [n = 762]) and SHIP-TREND (recruitment, 2008-2012 [n = 991]), and fecal H. pylori antigen in SHIP-TREND (n = 961). MAIN OUTCOMES AND MEASURES H. pylori seroprevalence. RESULTS Of 10,938 participants, 6160 (56.3%) were seropositive for H. pylori. GWASs identified the toll-like receptor (TLR) locus (4p14; top-ranked single-nucleotide polymorphism (SNP), rs10004195; P = 1.4 × 10(-18); odds ratio, 0.70 [95% CI, 0.65 to 0.76]) and the FCGR2A locus (1q23.3; top-ranked SNP, rs368433; P = 2.1 × 10(-8); odds ratio, 0.73 [95% CI, 0.65 to 0.81]) as associated with H. pylori seroprevalence. Among the 3 TLR genes at 4p14, only TLR1 was differentially expressed per copy number of the minor rs10004195-A allele (β = -0.23 [95% CI, -0.34 to -0.11]; P = 2.1 × 10(-4)). Individuals with high fecal H. pylori antigen titers (optical density >1) also exhibited the highest 25% of TLR1 expression levels (P = .01 by χ2 test). Furthermore, TLR1 exhibited an Asn248Ser substitution in the extracellular domain strongly linked to the rs10004195 SNP. CONCLUSIONS AND RELEVANCE GWAS meta-analysis identified an association between TLR1 and H. pylori seroprevalence, a finding that requires replication in nonwhite populations. If confirmed, genetic variations in TLR1 may help explain some of the observed variation in individual risk for H. pylori infection.
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Affiliation(s)
- Julia Mayerle
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
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