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Graff P, Woerz D, Wilzopolski J, Voss A, Sarrazin J, Blimkie TM, Weiner J, Kershaw O, Panwar P, Hackett T, Lau S, Brömme D, Beule D, Lee YA, Hancock REW, Gruber AD, Bäumer W, Hedtrich S. Extracellular Matrix Remodeling in Atopic Dermatitis Harnesses the Onset of an Asthmatic Phenotype and Is a Potential Contributor to the Atopic March. J Invest Dermatol 2024; 144:1010-1021.e23. [PMID: 37838332 DOI: 10.1016/j.jid.2023.09.278] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 10/16/2023]
Abstract
The development of atopic dermatitis in infancy, and subsequent allergies, such as asthma in later childhood, is known as the atopic march. The mechanism is largely unknown, however the course of disease indicates an inter-epithelial crosstalk, through the onset of inflammation in the skin and progression to other mucosal epithelia. In this study, we investigated if and how skin-lung epithelial crosstalk contributes to the development of the atopic march. First, we emulated inter-epithelial crosstalk through indirect coculture of bioengineered atopic-like skin disease models and three-dimensional bronchial epithelial models triggering an asthma-like phenotype in the latter. A subsequent secretome analysis identified thrombospondin-1, CD44, complement factor C3, fibronectin, and syndecan-4 as potentially relevant skin-derived mediators. Because these mediators are extracellular matrix-related proteins, we then studied the involvement of the extracellular matrix, unveiling distinct proteomic, transcriptomic, and ultrastructural differences in atopic samples. The latter indicated extracellular matrix remodeling triggering the release of the above-mentioned mediators. In vivo mouse data showed that exposure to these mediators dysregulated activated circadian clock genes which are increasingly discussed in the context of atopic diseases and asthma development. Our data point toward the existence of a skin-lung axis that could contribute to the atopic march driven by skin extracellular matrix remodeling.
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Affiliation(s)
- Patrick Graff
- Institute for Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Germany
| | - Dana Woerz
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Germany
| | - Jenny Wilzopolski
- Institute of Pharmacology and Toxicology, Department of Veterinary Medicine, Freie Universität Berlin, Germany
| | - Anne Voss
- Institute of Veterinary Pathology, Freie Universität Berlin, Germany
| | - Jana Sarrazin
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Germany
| | - Travis M Blimkie
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, British Columbia, Canada
| | - January Weiner
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Germany
| | - Preety Panwar
- Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia; Centre for Blood Research, University of British Columbia, British Columbia, Canada
| | - Tillie Hackett
- Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia; Centre for Heart Lung Innovation, St Paul's Hospital, British Columbia, Canada
| | - Susanne Lau
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité - Universitätsmedizin, Berlin, Germany
| | - Dieter Brömme
- Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia; Centre for Blood Research, University of British Columbia, British Columbia, Canada
| | - Dieter Beule
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Germany
| | - Young-Ae Lee
- Max Delbrück Center for Molecular Medicine, Berlin, Germany, Clinic for Pediatric Allergy, Experimental and Clinical Research Center of Charité Universitätsmedizin Berlin and Max Delbrück Center, Berlin, Germany
| | - Robert E W Hancock
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, British Columbia, Canada
| | - Achim D Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Germany
| | - Wolfgang Bäumer
- Institute of Pharmacology and Toxicology, Department of Veterinary Medicine, Freie Universität Berlin, Germany
| | - Sarah Hedtrich
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Germany; Max Delbrück Center for Molecular Medicine, Berlin, Germany, Clinic for Pediatric Allergy, Experimental and Clinical Research Center of Charité Universitätsmedizin Berlin and Max Delbrück Center, Berlin, Germany; Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada; Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany.
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2
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Yilmazer A, Zevla DM, Malmkvist R, Rodríguez CAB, Undurraga P, Kirgin E, Boernert M, Voehringer D, Kershaw O, Schlenner S, Kretschmer K. Selective ablation of thymic and peripheral Foxp3 + regulatory T cell development. Front Immunol 2023; 14:1298938. [PMID: 38164128 PMCID: PMC10757929 DOI: 10.3389/fimmu.2023.1298938] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/27/2023] [Indexed: 01/03/2024] Open
Abstract
Foxp3+ regulatory T (Treg) cells of thymic (tTreg) and peripheral (pTreg) developmental origin are thought to synergistically act to ensure immune homeostasis, with self-reactive tTreg cells primarily constraining autoimmune responses. Here we exploited a Foxp3-dependent reporter with thymus-specific GFP/Cre activity to selectively ablate either tTreg (ΔtTreg) or pTreg (ΔpTreg) cell development, while sparing the respective sister populations. We found that, in contrast to the tTreg cell behavior in ΔpTreg mice, pTreg cells acquired a highly activated suppressor phenotype and replenished the Treg cell pool of ΔtTreg mice on a non-autoimmune C57BL/6 background. Despite the absence of tTreg cells, pTreg cells prevented early mortality and fatal autoimmunity commonly observed in Foxp3-deficient models of complete Treg cell deficiency, and largely maintained immune tolerance even as the ΔtTreg mice aged. However, only two generations of backcrossing to the autoimmune-prone non-obese diabetic (NOD) background were sufficient to cause severe disease lethality associated with different, partially overlapping patterns of organ-specific autoimmunity. This included a particularly severe form of autoimmune diabetes characterized by an early onset and abrogation of the sex bias usually observed in the NOD mouse model of human type 1 diabetes. Genetic association studies further allowed us to define a small set of autoimmune risk loci sufficient to promote β cell autoimmunity, including genes known to impinge on Treg cell biology. Overall, these studies show an unexpectedly high functional adaptability of pTreg cells, emphasizing their important role as mediators of bystander effects to ensure self-tolerance.
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Affiliation(s)
- Acelya Yilmazer
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Dimitra Maria Zevla
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Rikke Malmkvist
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Carlos Alejandro Bello Rodríguez
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Pablo Undurraga
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Emre Kirgin
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Marie Boernert
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - David Voehringer
- Department of Infection Biology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Olivia Kershaw
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Susan Schlenner
- KU Leuven-University of Leuven, Department of Microbiology, Immunology and Transplantation, Leuven, Belgium
| | - Karsten Kretschmer
- Molecular and Cellular Immunology/Immune Regulation, Center for Regenerative Therapies Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
- Paul Langerhans Institute Dresden (PLID) of the Helmholtz Center Munich, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
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3
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Dogra T, Pelz L, Boehme JD, Kuechler J, Kershaw O, Marichal-Gallardo P, Baelkner M, Hein MD, Gruber AD, Benndorf D, Genzel Y, Bruder D, Kupke SY, Reichl U. Generation of "OP7 chimera" defective interfering influenza A particle preparations free of infectious virus that show antiviral efficacy in mice. Sci Rep 2023; 13:20936. [PMID: 38017026 PMCID: PMC10684881 DOI: 10.1038/s41598-023-47547-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/15/2023] [Indexed: 11/30/2023] Open
Abstract
Influenza A virus (IAV) defective interfering particles (DIPs) are considered as new promising antiviral agents. Conventional DIPs (cDIPs) contain a deletion in the genome and can only replicate upon co-infection with infectious standard virus (STV), during which they suppress STV replication. We previously discovered a new type of IAV DIP "OP7" that entails genomic point mutations and displays higher antiviral efficacy than cDIPs. To avoid safety concerns for the medical use of OP7 preparations, we developed a production system that does not depend on infectious IAV. We reconstituted a mixture of DIPs consisting of cDIPs and OP7 chimera DIPs, in which both harbor a deletion in their genome. To complement the defect, the deleted viral protein is expressed by the suspension cell line used for production in shake flasks. Here, DIP preparations harvested are not contaminated with infectious virions, and the fraction of OP7 chimera DIPs depended on the multiplicity of infection. Intranasal administration of OP7 chimera DIP material was well tolerated in mice. A rescue from an otherwise lethal IAV infection and no signs of disease upon OP7 chimera DIP co-infection demonstrated the remarkable antiviral efficacy. The clinical development of this new class of broad-spectrum antiviral may contribute to pandemic preparedness.
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Affiliation(s)
- Tanya Dogra
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Lars Pelz
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Julia D Boehme
- Institute of Medical Microbiology, Infection Prevention and Control, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto Von Guericke University Magdeburg, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Jan Kuechler
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Pavel Marichal-Gallardo
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Maike Baelkner
- Institute of Medical Microbiology, Infection Prevention and Control, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto Von Guericke University Magdeburg, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Marc D Hein
- Bioprocess Engineering, Otto Von Guericke University Magdeburg, Magdeburg, Germany
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Dirk Benndorf
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
- Bioprocess Engineering, Otto Von Guericke University Magdeburg, Magdeburg, Germany
| | - Yvonne Genzel
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Dunja Bruder
- Institute of Medical Microbiology, Infection Prevention and Control, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto Von Guericke University Magdeburg, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Sascha Y Kupke
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany.
| | - Udo Reichl
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
- Bioprocess Engineering, Otto Von Guericke University Magdeburg, Magdeburg, Germany
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4
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Felten M, Ferencik S, Teixeira Alves LG, Letsiou E, Lienau J, Müller-Redetzky HC, Langenhagen AK, Voß A, Dietert K, Kershaw O, Gruber AD, Michalick L, Kuebler WM, Ananthasubramaniam B, Maier B, Uhlenhaut H, Kramer A, Witzenrath M. Ventilator-induced Lung Injury Is Modulated by the Circadian Clock. Am J Respir Crit Care Med 2023; 207:1464-1474. [PMID: 36480958 DOI: 10.1164/rccm.202202-0320oc] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 02/13/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Rationale: Mechanical ventilation (MV) is life-saving but may evoke ventilator-induced lung injury (VILI). Objectives: To explore how the circadian clock modulates severity of murine VILI via the core clock component BMAL1 (basic helix-loop-helix ARNT like 1) in myeloid cells. Methods: Myeloid cell BMAL1-deficient (LysM (lysozyme 2 promoter/enhancer driving cre recombinase expression)Bmal1-/-) or wild-type control (LysMBmal1+/+) mice were subjected to 4 hours MV (34 ml/kg body weight) to induce lung injury. Ventilation was initiated at dawn or dusk or in complete darkness (circadian time [CT] 0 or CT12) to determine diurnal and circadian effects. Lung injury was quantified by lung function, pulmonary permeability, blood gas analysis, neutrophil recruitment, inflammatory markers, and histology. Neutrophil activation and oxidative burst were analyzed ex vivo. Measurements and Main Results: In diurnal experiments, mice ventilated at dawn exhibited higher permeability and neutrophil recruitment compared with dusk. Experiments at CT showed deterioration of pulmonary function, worsening of oxygenation, and increased mortality at CT0 compared with CT12. Wild-type neutrophils isolated at dawn showed higher activation and reactive oxygen species production compared with dusk, whereas these day-night differences were dampened in LysMBmal1-/- neutrophils. In LysMBmal1-/- mice, circadian variations in VILI severity were dampened and VILI-induced mortality at CT0 was reduced compared with LysMBmal1+/+ mice. Conclusions: Inflammatory response and lung barrier dysfunction upon MV exhibit diurnal variations, regulated by the circadian clock. LysMBmal1-/- mice are less susceptible to ventilation-induced pathology and lack circadian variation of severity compared with LysMBmal1+/+ mice. Our data suggest that the internal clock in myeloid cells is an important modulator of VILI.
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Affiliation(s)
- Matthias Felten
- Department of Infectious Diseases, Respiratory Medicine and Critical Care
| | - Sebastian Ferencik
- Department of Infectious Diseases, Respiratory Medicine and Critical Care
| | | | - Eleftheria Letsiou
- Division of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Jasmin Lienau
- Department of Infectious Diseases, Respiratory Medicine and Critical Care
| | | | | | - Anne Voß
- Department of Veterinary Pathology and
| | - Kristina Dietert
- Department of Veterinary Pathology and
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, Berlin, Germany
| | | | | | - Laura Michalick
- Institute of Physiology
- German Centre for Cardiovascular Research (DZHK), partner site Berlin, Berlin, Germany
| | - Wolfgang M Kuebler
- Institute of Physiology
- German Centre for Cardiovascular Research (DZHK), partner site Berlin, Berlin, Germany
- German Center for Lung Research (DZL), Giessen, Germany; and
| | | | - Bert Maier
- Laboratory of Chronobiology, Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Henriette Uhlenhaut
- Metabolic Programming, School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Achim Kramer
- Laboratory of Chronobiology, Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases, Respiratory Medicine and Critical Care
- German Center for Lung Research (DZL), Giessen, Germany; and
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Katsburg M, Weingart C, Aubry E, Kershaw O, Kikhney J, Kursawe L, Lübke-Becker A, Moter A, Skrodzki M, Kohn B, Fulde M. Limiting Factors in Treatment Success of Biofilm-Forming Streptococci in the Case of Canine Infective Endocarditis Caused by Streptococcus canis. Vet Sci 2023; 10:vetsci10050314. [PMID: 37235397 DOI: 10.3390/vetsci10050314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/12/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
An 8-year-old male Rhodesian Ridgeback was presented with fever and severe thrombocytopenia. Clinical and laboratory examination, echocardiography, blood culture, and pathohistology revealed evidence of infective endocarditis, ischemic renal infarcts, and septic encephalitis. Treatment was started immediately but the dog's condition worsened, and the dog had to be euthanized. The causative Streptococcus canis strain was detected by blood culture and MALDI-TOF MS and analyzed using whole-genome sequencing and multilocus sequence typing. Antibiotic susceptibility testing did not detect any resistance. The affected heart valve was analyzed using FISH imaging, which showed a streptococcal biofilm on the heart valve. Bacteria in biofilms are recalcitrant to antibiotic treatment. Early diagnosis could be beneficial to treatment outcome. Treatment of endocarditis could be improved by researching the optimal dosage of antibiotics in conjunction with the use of biofilm-active drugs.
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Affiliation(s)
- Miriam Katsburg
- Institute for Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertagstr. 7, 14163 Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
| | - Christiane Weingart
- Small Animal Clinic, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany
| | - Etienne Aubry
- Institute for Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertagstr. 7, 14163 Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertagstr. 15, 14163 Berlin, Germany
| | - Judith Kikhney
- Biofilmcenter, Department for Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
- MoKi Analytics GmbH, Marienplatz 9, 12207 Berlin, Germany
| | - Laura Kursawe
- Biofilmcenter, Department for Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
- MoKi Analytics GmbH, Marienplatz 9, 12207 Berlin, Germany
| | - Antina Lübke-Becker
- Institute for Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertagstr. 7, 14163 Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
| | - Annette Moter
- Biofilmcenter, Department for Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
- MoKi Analytics GmbH, Marienplatz 9, 12207 Berlin, Germany
- Moter Diagnostics, Marienplatz 9, 12207 Berlin, Germany
| | - Marianne Skrodzki
- Small Animal Clinic, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany
| | - Barbara Kohn
- Small Animal Clinic, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany
| | - Marcus Fulde
- Institute for Microbiology and Epizootics, Freie Universität Berlin, Robert-von-Ostertagstr. 7, 14163 Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
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Frentzel S, Jeron A, Pausder A, Kershaw O, Volckmar J, Schmitz I, Bruder D. IκB NS-deficiency protects mice from fatal Listeria monocytogenes infection by blunting pro-inflammatory signature in Ly6C high monocytes and preventing exaggerated innate immune responses. Front Immunol 2022; 13:1028789. [PMID: 36618344 PMCID: PMC9813228 DOI: 10.3389/fimmu.2022.1028789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
IκB proteins regulate the inhibition and activation of NF-κB transcription factor complexes. While classical IκB proteins keep NF-κB complexes inactive in the cytoplasm, atypical IκB proteins act on activated NF-κB complexes located in the nucleus. Most of the knowledge regarding the function of IκB proteins has been collected in vitro, while far less is known regarding their impact on activation and regulation of immune responses during in vivo infections. Combining in vivo Listeria monocytogenes (Lm) infection with comparative ex vivo transcriptional profiling of the hepatic response to the pathogen we observed that in contrast to wild type mice that mounted a robust inflammatory response, IκBNS-deficiency was generally associated with a transcriptional repression of innate immune responses. Whole tissue transcriptomics revealed a pronounced IκBNS-dependent reduction of myeloid cell-associated transcripts in the liver together with an exceptionally high Nfkbid promoter activity uncovered in Ly6Chigh inflammatory monocytes prompted us to further characterize the specific contribution of IκBNS in the inflammatory response of monocytes to the infectious agent. Indeed, Ly6Chigh monocytes primed during Lm infection in the absence of IκBNS displayed a blunted response compared to wild type-derived Ly6Chigh monocytes as evidenced by the reduced early expression of hallmark transcripts of monocyte-driven inflammation such as Il6, Nos2 and Il1β. Strikingly, altered monocyte activation in IκBNS-deficient mice was associated with an exceptional resistance against Lm infection and protection was associated with a strong reduction in immunopathology in Lm target organs. Of note, mice lacking IκBNS exclusively in myeloid cells failed to resist Lm infection, indicating that the observed effect was not monocyte intrinsic but monocyte extrinsic. While serum cytokine-profiling did not discover obvious differences between wild type and IκBNS -/- mice for most of the analyzed mediators, IL-10 was virtually undetectable in IκBNS-deficient mice, both in the steady state and following Lm infection. Together, we show here a crucial role for IκBNS during Lm infection with IκBNS-deficient mice showing an overall blunted pro-inflammatory immune response attributed to a reduced pro-inflammatory signature in Ly6Chigh monocytes. Reduced immunopathology and complete protection of mice against an otherwise fatal Lm infection identified IκBNS as molecular driver of inflammation in listeriosis.
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Affiliation(s)
- Sarah Frentzel
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany,Institute of Medical Microbiology and Hospital Hygiene, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Andreas Jeron
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany,Institute of Medical Microbiology and Hospital Hygiene, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Alexander Pausder
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany,Institute of Medical Microbiology and Hospital Hygiene, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Free University Berlin, Berlin, Germany
| | - Julia Volckmar
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany,Institute of Medical Microbiology and Hospital Hygiene, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Ingo Schmitz
- Dept. of Molecular Immunology, Ruhr University Bochum, Bochum, Germany
| | - Dunja Bruder
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany,Institute of Medical Microbiology and Hospital Hygiene, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany,*Correspondence: Dunja Bruder,
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7
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Gelmez E, Lehr K, Kershaw O, Frentzel S, Vilchez-Vargas R, Bank U, Link A, Schüler T, Jeron A, Bruder D. Characterization of Maladaptive Processes in Acute, Chronic and Remission Phases of Experimental Colitis in C57BL/6 Mice. Biomedicines 2022; 10:biomedicines10081903. [PMID: 36009449 PMCID: PMC9405850 DOI: 10.3390/biomedicines10081903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 11/20/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic recurrent inflammatory disease with unknown etiology. Dextran sulfate sodium (DSS) induced colitis is a widely used mouse model in IBD research. DSS colitis involves activation of the submucosal immune system and can be used to study IBD-like disease characteristics in acute, chronic, remission and transition phases. Insight into colon inflammatory parameters is needed to understand potentially irreversible adaptations to the chronification of colitis, determining the baseline and impact of further inflammatory episodes. We performed analyses of non-invasive and invasive colitis parameters in acute, chronic and remission phases of the DSS colitis in C57BL/6 mice. Non-invasive colitis parameters poorly reflected inflammatory aspects of colitis in chronic remission phase. We found invasive inflammatory parameters, positively linked to repeated DSS-episodes, such as specific colon weight, inflamed colon area, spleen weight, absolute cell numbers of CD4+ and CD8+ T cells as well as B cells, blood IFN-γ level, colonic chemokines BLC and MDC as well as the prevalence of Turicibacter species in feces. Moreover, microbial Lactobacillus species decreased with chronification of disease. Our data point out indicative parameters of recurrent gut inflammation in context of DSS colitis.
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Affiliation(s)
- Elif Gelmez
- Infection Immunology Group, Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Konrad Lehr
- Department of Gastroenterology, Hepatology and Infectious Diseases, Section of Molecular Gastroenterology and Microbiota-Associated Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, 14163 Berlin, Germany
| | - Sarah Frentzel
- Infection Immunology Group, Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Ramiro Vilchez-Vargas
- Department of Gastroenterology, Hepatology and Infectious Diseases, Section of Molecular Gastroenterology and Microbiota-Associated Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Ute Bank
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Alexander Link
- Department of Gastroenterology, Hepatology and Infectious Diseases, Section of Molecular Gastroenterology and Microbiota-Associated Diseases, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Thomas Schüler
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Andreas Jeron
- Infection Immunology Group, Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke University, 39120 Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Dunja Bruder
- Infection Immunology Group, Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke University, 39120 Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
- Correspondence: ; Tel.: +49-391-67-13374
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8
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Tabeling C, González Calera CR, Lienau J, Höppner J, Tschernig T, Kershaw O, Gutbier B, Naujoks J, Herbert J, Opitz B, Gruber AD, Hocher B, Suttorp N, Heidecke H, Burmester GR, Riemekasten G, Siegert E, Kuebler WM, Witzenrath M. Endothelin B Receptor Immunodynamics in Pulmonary Arterial Hypertension. Front Immunol 2022; 13:895501. [PMID: 35757687 PMCID: PMC9221837 DOI: 10.3389/fimmu.2022.895501] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 03/13/2022] [Accepted: 05/09/2022] [Indexed: 01/08/2023] Open
Abstract
Introduction Inflammation is a major pathological feature of pulmonary arterial hypertension (PAH), particularly in the context of inflammatory conditions such as systemic sclerosis (SSc). The endothelin system and anti-endothelin A receptor (ETA) autoantibodies have been implicated in the pathogenesis of PAH, and endothelin receptor antagonists are routinely used treatments for PAH. However, immunological functions of the endothelin B receptor (ETB) remain obscure. Methods Serum levels of anti-ETB receptor autoantibodies were quantified in healthy donors and SSc patients with or without PAH. Age-dependent effects of overexpression of prepro-endothelin-1 or ETB deficiency on pulmonary inflammation and the cardiovascular system were studied in mice. Rescued ETB-deficient mice (ETB-/-) were used to prevent congenital Hirschsprung disease. The effects of pulmonary T-helper type 2 (Th2) inflammation on PAH-associated pathologies were analyzed in ETB-/- mice. Pulmonary vascular hemodynamics were investigated in isolated perfused mouse lungs. Hearts were assessed for right ventricular hypertrophy. Pulmonary inflammation and collagen deposition were assessed via lung microscopy and bronchoalveolar lavage fluid analyses. Results Anti-ETB autoantibody levels were elevated in patients with PAH secondary to SSc. Both overexpression of prepro-endothelin-1 and rescued ETB deficiency led to pulmonary hypertension, pulmonary vascular hyperresponsiveness, and right ventricular hypertrophy with accompanying lymphocytic alveolitis. Marked perivascular lymphocytic infiltrates were exclusively found in ETB-/- mice. Following induction of pulmonary Th2 inflammation, PAH-associated pathologies and perivascular collagen deposition were aggravated in ETB-/- mice. Conclusion This study provides evidence for an anti-inflammatory role of ETB. ETB seems to have protective effects on Th2-evoked pathologies of the cardiovascular system. Anti-ETB autoantibodies may modulate ETB-mediated immune homeostasis.
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Affiliation(s)
- Christoph Tabeling
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Carla R González Calera
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jasmin Lienau
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jakob Höppner
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thomas Tschernig
- Institute of Anatomy and Cell Biology, University of Saarland, Homburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Birgitt Gutbier
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jan Naujoks
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Julia Herbert
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Bastian Opitz
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Berthold Hocher
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology), University of Heidelberg, University Medical Centre Mannheim, Heidelberg, Germany.,Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Norbert Suttorp
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany
| | | | - Gerd-R Burmester
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Elise Siegert
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany.,Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Wolfgang M Kuebler
- German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany.,Institute of Physiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site, Berlin, Germany.,St. Michael's Hospital, Keenan Research Centre for Biomedical Science, Toronto, ON, Canada.,Departments of Physiology and Surgery, University of Toronto, Toronto, ON, Canada
| | - Martin Witzenrath
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany
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9
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Wyler E, Adler JM, Eschke K, Teixeira Alves G, Peidli S, Pott F, Kazmierski J, Michalick L, Kershaw O, Bushe J, Andreotti S, Pennitz P, Abdelgawad A, Postmus D, Goffinet C, Kreye J, Reincke SM, Prüss H, Blüthgen N, Gruber AD, Kuebler WM, Witzenrath M, Landthaler M, Nouailles G, Trimpert J. Key benefits of dexamethasone and antibody treatment in COVID-19 hamster models revealed by single-cell transcriptomics. Mol Ther 2022; 30:1952-1965. [PMID: 35339689 PMCID: PMC8942568 DOI: 10.1016/j.ymthe.2022.03.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/17/2022] [Accepted: 03/22/2022] [Indexed: 12/15/2022] Open
Abstract
For coronavirus disease 2019 (COVID-19), effective and well-understood treatment options are still scarce. Since vaccine efficacy is challenged by novel variants, short-lasting immunity, and vaccine hesitancy, understanding and optimizing therapeutic options remains essential. We aimed at better understanding the effects of two standard-of-care drugs, dexamethasone and anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies, on infection and host responses. By using two COVID-19 hamster models, pulmonary immune responses were analyzed to characterize effects of single or combinatorial treatments. Pulmonary viral burden was reduced by anti-SARS-CoV-2 antibody treatment and unaltered or increased by dexamethasone alone. Dexamethasone exhibited strong anti-inflammatory effects and prevented fulminant disease in a severe disease model. Combination therapy showed additive benefits with both anti-viral and anti-inflammatory potency. Bulk and single-cell transcriptomic analyses confirmed dampened inflammatory cell recruitment into lungs upon dexamethasone treatment and identified a specifically responsive subpopulation of neutrophils, thereby indicating a potential mechanism of action. Our analyses confirm the anti-inflammatory properties of dexamethasone and suggest possible mechanisms, validate anti-viral effects of anti-SARS-CoV-2 antibody treatment, and reveal synergistic effects of a combination therapy, thus informing more effective COVID-19 therapies.
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Affiliation(s)
- Emanuel Wyler
- Berlin Institute for Medical Systems Biology (BIMSB), Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany.
| | - Julia M Adler
- Institute of Virology, Freie Universität Berlin, Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Division of Pulmonary Inflammation, Berlin, Germany
| | - Kathrin Eschke
- Institute of Virology, Freie Universität Berlin, Berlin, Germany
| | - G Teixeira Alves
- Berlin Institute for Medical Systems Biology (BIMSB), Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Stefan Peidli
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Pathology, Berlin, Germany; IRI Life Sciences, Institute for Biology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Fabian Pott
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Virology, Berlin, Germany; Berlin Institute of Health (BIH), Berlin, Germany
| | - Julia Kazmierski
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Virology, Berlin, Germany; Berlin Institute of Health (BIH), Berlin, Germany
| | - Laura Michalick
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Physiology, Berlin, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Judith Bushe
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Sandro Andreotti
- Bioinformatics Solution Center, Freie Universität Berlin, Berlin, Germany
| | - Peter Pennitz
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Division of Pulmonary Inflammation, Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases and Respiratory Medicine, Berlin, Germany
| | - Azza Abdelgawad
- Institute of Virology, Freie Universität Berlin, Berlin, Germany
| | - Dylan Postmus
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Virology, Berlin, Germany; Berlin Institute of Health (BIH), Berlin, Germany
| | - Christine Goffinet
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Virology, Berlin, Germany; Berlin Institute of Health (BIH), Berlin, Germany
| | - Jakob Kreye
- German Center for Neurodegenerative Diseases (DZNE) Berlin, Helmholtz Innovation Lab BaoBab (Brain Antibody-Omics and B-Cell Lab), Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Pediatric Neurology, Berlin, Germany
| | - S Momsen Reincke
- German Center for Neurodegenerative Diseases (DZNE) Berlin, Helmholtz Innovation Lab BaoBab (Brain Antibody-Omics and B-Cell Lab), Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Berlin, Germany
| | - Harald Prüss
- German Center for Neurodegenerative Diseases (DZNE) Berlin, Helmholtz Innovation Lab BaoBab (Brain Antibody-Omics and B-Cell Lab), Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Berlin, Germany
| | - Nils Blüthgen
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Pathology, Berlin, Germany; IRI Life Sciences, Institute for Biology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Achim D Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Wolfgang M Kuebler
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Physiology, Berlin, Germany
| | - Martin Witzenrath
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Division of Pulmonary Inflammation, Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases and Respiratory Medicine, Berlin, Germany
| | - Markus Landthaler
- Berlin Institute for Medical Systems Biology (BIMSB), Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany; IRI Life Sciences, Institute for Biology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Geraldine Nouailles
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Division of Pulmonary Inflammation, Berlin, Germany.
| | - Jakob Trimpert
- Institute of Virology, Freie Universität Berlin, Berlin, Germany.
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10
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Weingart C, Kershaw O, Kohn B, Rohwedder T. [Life-threatening acute neutrophilic vasculitis in a Shar-Pei puppy]. Tierarztl Prax Ausg K Kleintiere Heimtiere 2022; 50:57-63. [PMID: 35235963 DOI: 10.1055/a-1697-5157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A 3-month old male Shar-Pei was presented for lethargy, fever and cutaneous edema. Further investigations revealed superficial pyoderma with Streptococcus canis and an acute neutrophilic vasculitis. Symptomatic and antibiotic treatment in combination with immunosuppressive treatment (initially prednisolone, later cyclosporine) treatment was performed. In the course of the disease complications such as dyspnea, anemia, skin ulceration, skin necrosis and secondary bacterial skin infection with multiresistant bacteria occurred. After intensive care treatment the dog was discharged from the hospital 38 days later. Within the following weeks the dosage of the immunosuppressants were reduced and the drugs were discontinued after 4 months.
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Affiliation(s)
- Christiane Weingart
- Klinik für kleine Haustiere, Fachbereich Veterinärmedizin, Freie Universität Berlin
| | - Olivia Kershaw
- Institut für Tierpathologie, Fachbereich für Veterinärmedizin, Freie Universität Berlin
| | - Barbara Kohn
- Klinik für kleine Haustiere, Fachbereich Veterinärmedizin, Freie Universität Berlin
| | - Thomas Rohwedder
- Klinik für kleine Haustiere, Fachbereich Veterinärmedizin, Freie Universität Berlin
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11
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Winter JC, Thieme K, Eule JC, Saliu EM, Kershaw O, Gehlen H. Photodermatitis and ocular changes in nine horses after ingestion of wild parsnip (pastinaca sativa). BMC Vet Res 2022; 18:80. [PMID: 35219345 PMCID: PMC8881838 DOI: 10.1186/s12917-022-03162-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 01/26/2022] [Indexed: 11/30/2022] Open
Abstract
Background Primary photosensitization rarely occurs in horses and can easily be misinterpreted. Descriptions of the disease in horses after ingestion of parsnip are lacking. The aim of this case series was to describe the dermatological and ocular changes due to photosensitization and to raise awareness of parsnip being a possible aetiologic agent. Case presentation Nine horses from three different stables in Berlin and Brandenburg, Germany, presented variable degrees of erythema, scaling, crusting and necrosis of unpigmented skin at the head and prepuce. Horses were of different breeds with a median age of 15 ± 5.9 years. A mild leukocytosis was diagnosed in 1/9 horses at admission. Analyzed liver enzymes were within the reference ranges in all horses. Ocular changes were diagnosed as follows: blepharitis (3/9), conjunctivitis (7/9), corneal edema without additional signs of keratitis and/or uveitis (2/9), corneal edema with signs of uveitis (1/9) and photophobia (4/9). One horse developed a fluorescein positive corneal erosion. Skin biopsy (1/9) revealed a moderate to severe acute, eosinophilic and lymphocytic dermatitis with dermal edema and vasculitis. All stables housing these patients fed hay from the same distributer. Analyzed hay samples showed high contents of wild parsnip (plants, seeds, roots). Wild parsnip is widespread in Europe and contains furocoumarins, a family of photodynamic pigments, which may cause primary photodermatitis, keratoconjunctivitis and uveitis. Horses were treated according to severity of clinical symptoms systemically with flunixine meglumine (1.1 mg/kg BW 1-2x/day) or prednisolone (1 mg/kg BW 1x/day). Topically, either gentamicin (3x/day), dexamethasone (2-3x/day) and/or atropine (1x/day) were used. Skin care was provided with almond oil or dexpanthenol (2x/day). All horses were kept in a dark environment or were treated with sunscreen and facemasks. Duration of treatment varied from 6–30 days (median 11.3 days). Conclusion Ingestion of wild parsnip (Pastinaca sativa) can induce primary photosensitization with dermatitis and ocular injury in horses. In times of extreme weather, hay may alter in botanical composition, resulting in high amounts of uncharacteristic plants causing novel problems.
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12
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Wienhold SM, Brack MC, Nouailles G, Krishnamoorthy G, Korf IHE, Seitz C, Wienecke S, Dietert K, Gurtner C, Kershaw O, Gruber AD, Ross A, Ziehr H, Rohde M, Neudecker J, Lienau J, Suttorp N, Hippenstiel S, Hocke AC, Rohde C, Witzenrath M. Preclinical Assessment of Bacteriophage Therapy against Experimental Acinetobacter baumannii Lung Infection. Viruses 2021; 14:33. [PMID: 35062236 PMCID: PMC8778864 DOI: 10.3390/v14010033] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/19/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022] Open
Abstract
Respiratory infections caused by multidrug-resistant Acinetobacter baumannii are difficult to treat and associated with high mortality among critically ill hospitalized patients. Bacteriophages (phages) eliminate pathogens with high host specificity and efficacy. However, the lack of appropriate preclinical experimental models hampers the progress of clinical development of phages as therapeutic agents. Therefore, we tested the efficacy of a purified lytic phage, vB_AbaM_Acibel004, against multidrug-resistant A. baumannii clinical isolate RUH 2037 infection in immunocompetent mice and a human lung tissue model. Sham- and A. baumannii-infected mice received a single-dose of phage or buffer via intratracheal aerosolization. Group-specific differences in bacterial burden, immune and clinical responses were compared. Phage-treated mice not only recovered faster from infection-associated hypothermia but also had lower pulmonary bacterial burden, lower lung permeability, and cytokine release. Histopathological examination revealed less inflammation with unaffected inflammatory cellular recruitment. No phage-specific adverse events were noted. Additionally, the bactericidal effect of the purified phage on A. baumannii was confirmed after single-dose treatment in an ex vivo human lung infection model. Taken together, our data suggest that the investigated phage has significant potential to treat multidrug-resistant A. baumannii infections and further support the development of appropriate methods for preclinical evaluation of antibacterial efficacy of phages.
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Affiliation(s)
- Sandra-Maria Wienhold
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
| | - Markus C. Brack
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
- Department of Infectious Diseases and Respiratory Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (N.S.); (S.H.)
| | - Geraldine Nouailles
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
| | - Gopinath Krishnamoorthy
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
| | - Imke H. E. Korf
- Department of Microorganisms, Leibniz Institute DSMZGerman Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (I.H.E.K.); (C.R.)
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), 38124 Braunschweig, Germany; (C.S.); (S.W.); (A.R.); (H.Z.)
| | - Claudius Seitz
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), 38124 Braunschweig, Germany; (C.S.); (S.W.); (A.R.); (H.Z.)
| | - Sarah Wienecke
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), 38124 Braunschweig, Germany; (C.S.); (S.W.); (A.R.); (H.Z.)
| | - Kristina Dietert
- Department of Veterinary Pathology, Freie Universität Berlin, 14163 Berlin, Germany; (K.D.); (C.G.); (O.K.); (A.D.G.)
- Veterinary Centre for Resistance Research, Freie Universität Berlin, 14163 Berlin, Germany
| | - Corinne Gurtner
- Department of Veterinary Pathology, Freie Universität Berlin, 14163 Berlin, Germany; (K.D.); (C.G.); (O.K.); (A.D.G.)
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, 14163 Berlin, Germany; (K.D.); (C.G.); (O.K.); (A.D.G.)
| | - Achim D. Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, 14163 Berlin, Germany; (K.D.); (C.G.); (O.K.); (A.D.G.)
| | - Anton Ross
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), 38124 Braunschweig, Germany; (C.S.); (S.W.); (A.R.); (H.Z.)
| | - Holger Ziehr
- Department of Pharmaceutical Biotechnology, Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), 38124 Braunschweig, Germany; (C.S.); (S.W.); (A.R.); (H.Z.)
| | - Manfred Rohde
- Central Facility for Microscopy, Helmholtz-Centre for Infection Research (HZI), 38124 Braunschweig, Germany;
| | - Jens Neudecker
- Department of General, Visceral, Vascular and Thoracic Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany;
| | - Jasmin Lienau
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
| | - Norbert Suttorp
- Department of Infectious Diseases and Respiratory Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (N.S.); (S.H.)
| | - Stefan Hippenstiel
- Department of Infectious Diseases and Respiratory Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (N.S.); (S.H.)
| | - Andreas C. Hocke
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
- Department of Infectious Diseases and Respiratory Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (N.S.); (S.H.)
| | - Christine Rohde
- Department of Microorganisms, Leibniz Institute DSMZGerman Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (I.H.E.K.); (C.R.)
| | - Martin Witzenrath
- Division of Pulmonary Inflammation, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (S.-M.W.); (M.C.B.); (G.N.); (G.K.); (J.L.); (A.C.H.)
- Department of Infectious Diseases and Respiratory Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10115 Berlin, Germany; (N.S.); (S.H.)
- German Center for Lung Research (DZL), Partner Site Charité, 10117 Berlin, Germany
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13
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Böning MAL, Parzmair GP, Jeron A, Düsedau HP, Kershaw O, Xu B, Relja B, Schlüter D, Dunay IR, Reinhold A, Schraven B, Bruder D. Enhanced Susceptibility of ADAP-Deficient Mice to Listeria monocytogenes Infection Is Associated With an Altered Phagocyte Phenotype and Function. Front Immunol 2021; 12:724855. [PMID: 34659211 PMCID: PMC8515145 DOI: 10.3389/fimmu.2021.724855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/03/2021] [Indexed: 12/04/2022] Open
Abstract
The adhesion and degranulation-promoting adaptor protein (ADAP) serves as a multifunctional scaffold and is involved in the formation of immune signaling complexes. To date, only limited data exist regarding the role of ADAP in pathogen-specific immunity during in vivo infection, and its contribution in phagocyte-mediated antibacterial immunity remains elusive. Here, we show that mice lacking ADAP (ADAPko) are highly susceptible to the infection with the intracellular pathogen Listeria monocytogenes (Lm) by showing enhanced immunopathology in infected tissues together with increased morbidity, mortality, and excessive infiltration of neutrophils and monocytes. Despite high phagocyte numbers in the spleen and liver, ADAPko mice only inefficiently controlled pathogen growth, hinting at a functional impairment of infection-primed phagocytes in the ADAP-deficient host. Flow cytometric analysis of hallmark pro-inflammatory mediators and unbiased whole genome transcriptional profiling of neutrophils and inflammatory monocytes uncovered broad molecular alterations in the inflammatory program in both phagocyte subsets following their activation in the ADAP-deficient host. Strikingly, ex vivo phagocytosis assay revealed impaired phagocytic capacity of neutrophils derived from Lm-infected ADAPko mice. Together, our data suggest that an alternative priming of phagocytes in ADAP-deficient mice during Lm infection induces marked alterations in the inflammatory profile of neutrophils and inflammatory monocytes that contribute to enhanced immunopathology while limiting their capacity to eliminate the pathogen and to prevent the fatal outcome of the infection.
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Affiliation(s)
- Martha A L Böning
- Infection Immunology, Institute of Medical Microbiology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.,Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Gerald P Parzmair
- Infection Immunology, Institute of Medical Microbiology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.,Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Andreas Jeron
- Infection Immunology, Institute of Medical Microbiology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.,Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Henning P Düsedau
- Institute of Inflammation and Neurodegeneration, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Freie Universität, Berlin, Germany
| | - Baolin Xu
- Experimental Radiology, Department of Radiology and Nuclear Medicine, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Borna Relja
- Experimental Radiology, Department of Radiology and Nuclear Medicine, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Dirk Schlüter
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany.,Institute of Medical Microbiology and Hospital Hygiene, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Ildiko Rita Dunay
- Institute of Inflammation and Neurodegeneration, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany
| | - Annegret Reinhold
- Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Burkhart Schraven
- Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Dunja Bruder
- Infection Immunology, Institute of Medical Microbiology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.,Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
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14
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Pohlan J, Stelbrink C, Tuttle N, Kubicka F, Kwon HJ, Jahnke P, Goehler F, Kershaw O, Gruber AD, Pumberger M, Diekhoff T. Visualizing patterns of intervertebral disc damage with dual-energy computed tomography: assessment of diagnostic accuracy in an ex vivo spine biophantom. Acta Radiol 2021; 63:1118-1125. [PMID: 34219471 PMCID: PMC9272519 DOI: 10.1177/02841851211025863] [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] [Indexed: 11/17/2022]
Abstract
Background Previously, dual-energy computed tomography (DECT) has been established for
imaging spinal fractures as an alternative modality to magnetic resonance
imaging (MRI). Purpose To analyze the diagnostic accuracy of DECT in visualizing intervertebral disc
(IVD) damage. Material and Methods The lumbar spine of a Great Dane dog was used as an ex vivo biophantom. DECT
was performed as sequential volume technique on a single-source CT scanner.
IVDs were imaged before and after an injection of sodium chloride solution
and after anterior discectomy in single-source sequential volume DECT
technique using 80 and 135 kVp. Chondroitin/Collagen maps (cMaps) were
reconstructed at 1 mm and compared with standard CT. Standardized regions of
interest (ROI) were placed in the anterior anulus fibrosus, nucleus
pulposus, and other sites. Three blinded readers classified all images as
intact disc, nucleus lesion, or anulus lesion. Additionally, clinical
examples from patients with IVD lesions were retrospectively identified from
the radiological database. Results Interrater reliability was almost perfect with a Fleiss kappa of 0.833 (95%
confidence interval [CI] 0.83–0.835) for DECT, compared with 0.780 (95% CI
0.778–0.782) for standard CT. For overall detection accuracy of IVD, DECT
achieved 91.0% sensitivity (95% CI 83.6–95.8) and 92.0% specificity (95% CI
80.8–97.8). Standard CT showed 91.0% sensitivity (95% CI 83.6–95.8) and
78.0% specificity (95% CI 64.0–88.5). Conclusion DECT reliably identified IVD damage in an ex vivo biophantom. Clinical
examples of patients with different lesions illustrate the accurate
depiction of IVD microstructure. These data emphasize the diagnostic
potential of DECT cMaps.
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Affiliation(s)
- Julian Pohlan
- Clinic of Radiology, Charité – Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Carsten Stelbrink
- Clinic of Radiology, Charité – Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Niklas Tuttle
- Department of Spine Surgery, Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Felix Kubicka
- Department of Spine Surgery, Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Ho Jung Kwon
- Clinic of Radiology, Charité – Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Paul Jahnke
- Clinic of Radiology, Charité – Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Friedemann Goehler
- Clinic of Radiology, Charité – Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Matthias Pumberger
- Department of Spine Surgery, Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
| | - Torsten Diekhoff
- Clinic of Radiology, Charité – Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Freie Universität Berlin, Berlin, Germany
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15
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Tabeling C, Wienhold SM, Birnhuber A, Brack MC, Nouailles G, Kershaw O, Firsching TC, Gruber AD, Lienau J, Marsh LM, Olschewski A, Kwapiszewska G, Witzenrath M. Pulmonary fibrosis in Fra-2 transgenic mice is associated with decreased numbers of alveolar macrophages and increased susceptibility to pneumococcal pneumonia. Am J Physiol Lung Cell Mol Physiol 2021; 320:L916-L925. [PMID: 33655757 DOI: 10.1152/ajplung.00505.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a deadly condition characterized by progressive respiratory dysfunction. Exacerbations due to airway infections are believed to promote disease progression, and presence of Streptococcus in the lung microbiome has been associated with the progression of IPF and mortality. The aim of this study was to analyze the effect of lung fibrosis on susceptibility to pneumococcal pneumonia and bacteremia. The effects of subclinical (low dose) infection with Streptococcus pneumoniae were studied in a well characterized fos-related antigen-2 (Fra-2) transgenic (TG) mouse model of spontaneous, progressive pulmonary fibrosis. Forty-eight hours after transnasal infection with S. pneumoniae, bacterial load was assessed in lung tissue, bronchoalveolar lavage (BAL), blood, and spleen. Leukocyte subsets and cytokine levels were analyzed in BAL and blood. Lung compliance and arterial blood gases were assessed. In contrast to wildtype mice, low dose lung infection with S. pneumoniae in Fra-2 TG mice resulted in substantial pneumonia including weight loss, increased lung bacterial load, and bacteremia. BAL alveolar macrophages were reduced in Fra-2 TG mice compared to the corresponding WT mice. Proinflammatory cytokines and chemokines (IL-1β, IL-6, TNF-α, and CXCL1) were elevated upon infection in BAL supernatant and plasma of Fra-2 TG mice. Lung compliance was decreased in Fra-2 TG mice following low dose infection with S. pneumoniae. Pulmonary fibrosis increases susceptibility to pneumococcal pneumonia and bacteremia possibly via impaired alveolar bacterial clearance.
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Affiliation(s)
- Christoph Tabeling
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany.,Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sandra-Maria Wienhold
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Anna Birnhuber
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Markus C Brack
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Geraldine Nouailles
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Theresa C Firsching
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Achim D Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Jasmin Lienau
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Leigh M Marsh
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Andrea Olschewski
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Grazyna Kwapiszewska
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria.,Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Martin Witzenrath
- Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany.,German Center for Lung Research (DZL), Partner Site Charité, Berlin, Germany
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16
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Wu Q, Jorde I, Kershaw O, Jeron A, Bruder D, Schreiber J, Stegemann-Koniszewski S. Resolved Influenza A Virus Infection Has Extended Effects on Lung Homeostasis and Attenuates Allergic Airway Inflammation in a Mouse Model. Microorganisms 2020; 8:microorganisms8121878. [PMID: 33260910 PMCID: PMC7761027 DOI: 10.3390/microorganisms8121878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/11/2022] Open
Abstract
Allergic airway inflammation (AAI) involves T helper cell type 2 (Th2) and pro-inflammatory responses to aeroallergens and many predisposing factors remain elusive. Influenza A virus (IAV) is a major human pathogen that causes acute respiratory infections and induces specific immune responses essential for viral clearance and resolution of the infection. Beyond acute infection, IAV has been shown to persistently affect lung homeostasis and respiratory immunity. Here we asked how resolved IAV infection affects subsequently induced AAI. Mice infected with a sublethal dose of IAV were sensitized and challenged in an ovalbumin mediated mouse model for AAI after resolution of the acute viral infection. Histological changes, respiratory leukocytes, cytokines and airway hyperreactivity were analyzed in resolved IAV infection alone and in AAI with and without previous IAV infection. More than five weeks after infection, we detected persistent pneumonia with increased activated CD4+ and CD8+ lymphocytes as well as dendritic cells and MHCII expressing macrophages in the lung. Resolved IAV infection significantly affected subsequently induced AAI on different levels including morphological changes, respiratory leukocytes and lymphocytes as well as the pro-inflammatory cytokine responses, which was clearly diminished. We conclude that IAV has exceptional persisting effects on respiratory immunity with substantial consequences for subsequently induced AAI.
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Affiliation(s)
- Qingyu Wu
- Experimental Pneumology, Department of Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany; (Q.W.); (I.J.); (J.S.)
| | - Ilka Jorde
- Experimental Pneumology, Department of Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany; (Q.W.); (I.J.); (J.S.)
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Department of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany;
| | - Andreas Jeron
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany; (A.J.); (D.B.)
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Dunja Bruder
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany; (A.J.); (D.B.)
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Jens Schreiber
- Experimental Pneumology, Department of Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany; (Q.W.); (I.J.); (J.S.)
| | - Sabine Stegemann-Koniszewski
- Experimental Pneumology, Department of Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany; (Q.W.); (I.J.); (J.S.)
- Correspondence:
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17
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Jorde I, Hildebrand CB, Kershaw O, Lücke E, Stegemann-Koniszewski S, Schreiber J. Modulation of Allergic Sensitization and Allergic Inflammation by Staphylococcus aureus Enterotoxin B in an Ovalbumin Mouse Model. Front Immunol 2020; 11:592186. [PMID: 33193436 PMCID: PMC7649385 DOI: 10.3389/fimmu.2020.592186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/05/2020] [Indexed: 01/02/2023] Open
Abstract
The superantigen Staphylococcus aureus (S. aureus) enterotoxin B (SEB) has been proposed a central player in the associations between S. aureus nasal colonization and the development of allergic asthma. Previously, SEB has been shown to aggravate allergic sensitization and allergic airway inflammation (AAI) in experimental mouse models. Aiming at understanding the underlying immunological mechanisms, we tested the hypothesis that intranasal (i.n.) SEB-treatment divergently modulates AAI depending on the timing and intensity of the SEB-encounter. In an ovalbumin-mediated mouse model of AAI, we treated mice i.n. with 50 ng or 500 ng SEB either together with the allergic challenge or prior to the peripheral sensitization. We observed SEB to affect different hallmark parameters of AAI depending on the timing and the dose of treatment. SEB administered i.n. together with the allergic challenge significantly modulated respiratory leukocyte accumulation, intensified lymphocyte activation and, at the higher dose, induced a strong type-1 and pro-inflammatory cytokine response and alleviated airway hyperreactivity in AAI. SEB administered i.n. prior to the allergic sensitization at the lower dose significantly boosted the specific IgE response while administration of the higher dose led to a significantly reduced recruitment of immune cells, including eosinophils, to the respiratory tract and to a significantly dampened Th-2 cytokine response without inducing a Th-1 or pro-inflammatory response. We show a remarkably versatile potential for SEB to either aggravate or alleviate different parameters of allergic sensitization and AAI. Our study thereby not only highlights the complexity of the associations between S. aureus and allergic asthma but possibly even points at prophylactic and therapeutic pathways.
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Affiliation(s)
- Ilka Jorde
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg/Medical Faculty, Health Campus Immunology, Infectiology and Inflammation (GC-I³), Otto-von-Guericke-University, Magdeburg, Germany
| | - Christina B Hildebrand
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg/Medical Faculty, Health Campus Immunology, Infectiology and Inflammation (GC-I³), Otto-von-Guericke-University, Magdeburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Eva Lücke
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg/Medical Faculty, Health Campus Immunology, Infectiology and Inflammation (GC-I³), Otto-von-Guericke-University, Magdeburg, Germany
| | - Sabine Stegemann-Koniszewski
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg/Medical Faculty, Health Campus Immunology, Infectiology and Inflammation (GC-I³), Otto-von-Guericke-University, Magdeburg, Germany
| | - Jens Schreiber
- Experimental Pneumology, Department of Pneumology, University Hospital Magdeburg/Medical Faculty, Health Campus Immunology, Infectiology and Inflammation (GC-I³), Otto-von-Guericke-University, Magdeburg, Germany
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18
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Aubreville M, Bertram CA, Marzahl C, Gurtner C, Dettwiler M, Schmidt A, Bartenschlager F, Merz S, Fragoso M, Kershaw O, Klopfleisch R, Maier A. Deep learning algorithms out-perform veterinary pathologists in detecting the mitotically most active tumor region. Sci Rep 2020; 10:16447. [PMID: 33020510 PMCID: PMC7536430 DOI: 10.1038/s41598-020-73246-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 09/15/2020] [Indexed: 01/13/2023] Open
Abstract
Manual count of mitotic figures, which is determined in the tumor region with the highest mitotic activity, is a key parameter of most tumor grading schemes. It can be, however, strongly dependent on the area selection due to uneven mitotic figure distribution in the tumor section. We aimed to assess the question, how significantly the area selection could impact the mitotic count, which has a known high inter-rater disagreement. On a data set of 32 whole slide images of H&E-stained canine cutaneous mast cell tumor, fully annotated for mitotic figures, we asked eight veterinary pathologists (five board-certified, three in training) to select a field of interest for the mitotic count. To assess the potential difference on the mitotic count, we compared the mitotic count of the selected regions to the overall distribution on the slide. Additionally, we evaluated three deep learning-based methods for the assessment of highest mitotic density: In one approach, the model would directly try to predict the mitotic count for the presented image patches as a regression task. The second method aims at deriving a segmentation mask for mitotic figures, which is then used to obtain a mitotic density. Finally, we evaluated a two-stage object-detection pipeline based on state-of-the-art architectures to identify individual mitotic figures. We found that the predictions by all models were, on average, better than those of the experts. The two-stage object detector performed best and outperformed most of the human pathologists on the majority of tumor cases. The correlation between the predicted and the ground truth mitotic count was also best for this approach (0.963–0.979). Further, we found considerable differences in position selection between pathologists, which could partially explain the high variance that has been reported for the manual mitotic count. To achieve better inter-rater agreement, we propose to use a computer-based area selection for support of the pathologist in the manual mitotic count.
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Affiliation(s)
- Marc Aubreville
- Pattern Recognition Lab, Computer Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
| | - Christof A Bertram
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Christian Marzahl
- Pattern Recognition Lab, Computer Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Corinne Gurtner
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Martina Dettwiler
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Anja Schmidt
- Vet Med Labor GmbH - Division of IDEXX Laboratories, Ludwigsburg, Germany
| | | | - Sophie Merz
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Marco Fragoso
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Robert Klopfleisch
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Andreas Maier
- Pattern Recognition Lab, Computer Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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19
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Bertram CA, Ertelt A, Lübke-Becker A, Erickson NA, Kershaw O. Pathology in Practice. J Am Vet Med Assoc 2020; 255:173-176. [PMID: 31260410 DOI: 10.2460/javma.255.2.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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David P, Drabczyk-Pluta M, Pastille E, Knuschke T, Werner T, Honke N, Megger DA, Akhmetzyanova I, Shaabani N, Eyking-Singer A, Cario E, Kershaw O, Gruber AD, Tenbusch M, Dietze KK, Trilling M, Liu J, Schadendorf D, Streeck H, Lang KS, Xie Y, Zimmer L, Sitek B, Paschen A, Westendorf AM, Dittmer U, Zelinskyy G. Combination immunotherapy with anti-PD-L1 antibody and depletion of regulatory T cells during acute viral infections results in improved virus control but lethal immunopathology. PLoS Pathog 2020; 16:e1008340. [PMID: 32226027 PMCID: PMC7105110 DOI: 10.1371/journal.ppat.1008340] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 01/20/2020] [Indexed: 12/31/2022] Open
Abstract
Combination immunotherapy (CIT) is currently applied as a treatment for different cancers and is proposed as a cure strategy for chronic viral infections. Whether such therapies are efficient during an acute infection remains elusive. To address this, inhibitory receptors were blocked and regulatory T cells depleted in acutely Friend retrovirus-infected mice. CIT resulted in a dramatic expansion of cytotoxic CD4+ and CD8+ T cells and a subsequent reduction in viral loads. Despite limited viral replication, mice developed fatal immunopathology after CIT. The pathology was most severe in the gastrointestinal tract and was mediated by granzyme B producing CD4+ and CD8+ T cells. A similar post-CIT pathology during acute Influenza virus infection of mice was observed, which could be prevented by vaccination. Melanoma patients who developed immune-related adverse events under immune checkpoint CIT also presented with expanded granzyme-expressing CD4+ and CD8+ T cell populations. Our data suggest that acute infections may induce immunopathology in patients treated with CIT, and that effective measures for infection prevention should be applied.
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Affiliation(s)
- Paul David
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Eva Pastille
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Torben Knuschke
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Tanja Werner
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Nadine Honke
- Department of Rheumatology, Hiller Research Center Rheumatology, University Hospital Düsseldorf, Germany
| | - Dominik A. Megger
- Medizinisches Proteom-Center, Ruhr-Universität Bochum, Bochum, Germany
| | - Ilseyar Akhmetzyanova
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Department of Pathology, Albert Einstein College of Medicine, New York, New York, United States of America
| | - Namir Shaabani
- Institute of Immunology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Annette Eyking-Singer
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Elke Cario
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Olivia Kershaw
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Free University Berlin, Berlin, Germany
| | - Achim D. Gruber
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Free University Berlin, Berlin, Germany
| | - Matthias Tenbusch
- Institute of Clinical and Molecular Virology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Kirsten K. Dietze
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Mirko Trilling
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Jia Liu
- Department of Infectious Diseases, Union Hospital of Tonji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dirk Schadendorf
- Department of Dermatology, Comprehensive Cancer Center, University Hospital Essen, Essen, Germany
| | - Hendrik Streeck
- Institute for HIV Research, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Karl S. Lang
- Institute of Immunology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Youhua Xie
- Key Lab of Molecular Virology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lisa Zimmer
- Department of Dermatology, Comprehensive Cancer Center, University Hospital Essen, Essen, Germany
| | - Barbara Sitek
- Medizinisches Proteom-Center, Ruhr-Universität Bochum, Bochum, Germany
| | - Annette Paschen
- Department of Dermatology, Comprehensive Cancer Center, University Hospital Essen, Essen, Germany
| | - Astrid M. Westendorf
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Ulf Dittmer
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Gennadiy Zelinskyy
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- * E-mail:
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21
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Bertram CA, Aubreville M, Gurtner C, Bartel A, Corner SM, Dettwiler M, Kershaw O, Noland EL, Schmidt A, Sledge DG, Smedley RC, Thaiwong T, Kiupel M, Maier A, Klopfleisch R. Computerized Calculation of Mitotic Count Distribution in Canine Cutaneous Mast Cell Tumor Sections: Mitotic Count Is Area Dependent. Vet Pathol 2019; 57:214-226. [PMID: 31808382 DOI: 10.1177/0300985819890686] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mitotic count (MC) is an important element for grading canine cutaneous mast cell tumors (ccMCTs) and is determined in 10 consecutive high-power fields with the highest mitotic activity. However, there is variability in area selection between pathologists. In this study, the MC distribution and the effect of area selection on the MC were analyzed in ccMCTs. Two pathologists independently annotated all mitotic figures in whole-slide images of 28 ccMCTs (ground truth). Automated image analysis was used to examine the ground truth distribution of the MC throughout the tumor section area, which was compared with the manual MCs of 11 pathologists. Computerized analysis demonstrated high variability of the MC within different tumor areas. There were 6 MCTs with consistently low MCs (MC<7 in all tumor areas), 13 cases with mostly high MCs (MC ≥7 in ≥75% of 10 high-power field areas), and 9 borderline cases with variable MCs around 7, which is a cutoff value for ccMCT grading. There was inconsistency among pathologists in identifying the areas with the highest density of mitotic figures throughout the 3 ccMCT groups; only 51.9% of the counts were consistent with the highest 25% of the ground truth MC distribution. Regardless, there was substantial agreement between pathologists in detecting tumors with MC ≥7. Falsely low MCs below 7 mainly occurred in 4 of 9 borderline cases that had very few ground truth areas with MC ≥7. The findings of this study highlight the need to further standardize how to select the region of the tumor in which to determine the MC.
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Affiliation(s)
- Christof A Bertram
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Marc Aubreville
- Pattern Recognition Lab, Computer Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Corinne Gurtner
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany.,Vetsuisse Faculty, Department of Infectious Diseases and Pathobiology, Institute of Animal Pathology, University of Bern, Bern, Switzerland
| | - Alexander Bartel
- Institute for Veterinary Epidemiology and Biostatistics, Freie Universität Berlin, Berlin, Germany
| | - Sarah M Corner
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, MI, USA
| | - Martina Dettwiler
- Vetsuisse Faculty, Department of Infectious Diseases and Pathobiology, Institute of Animal Pathology, University of Bern, Bern, Switzerland
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Erica L Noland
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, MI, USA.,Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Anja Schmidt
- Vet Med Labor GmbH, Division of IDEXX Laboratories, Ludwigsburg, Germany
| | - Dodd G Sledge
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, MI, USA
| | - Rebecca C Smedley
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, MI, USA
| | - Tuddow Thaiwong
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, MI, USA
| | - Matti Kiupel
- Michigan State University Veterinary Diagnostic Laboratory, Lansing, MI, USA.,Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Andreas Maier
- Pattern Recognition Lab, Computer Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Robert Klopfleisch
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
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22
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Sharma-Chawla N, Stegemann-Koniszewski S, Christen H, Boehme JD, Kershaw O, Schreiber J, Guzmán CA, Bruder D, Hernandez-Vargas EA. In vivo Neutralization of Pro-inflammatory Cytokines During Secondary Streptococcus pneumoniae Infection Post Influenza A Virus Infection. Front Immunol 2019; 10:1864. [PMID: 31474978 PMCID: PMC6702285 DOI: 10.3389/fimmu.2019.01864] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 03/27/2019] [Accepted: 07/23/2019] [Indexed: 11/20/2022] Open
Abstract
An overt pro-inflammatory immune response is a key factor contributing to lethal pneumococcal infection in an influenza pre-infected host and represents a potential target for therapeutic intervention. However, there is a paucity of knowledge about the level of contribution of individual cytokines. Based on the predictions of our previous mathematical modeling approach, the potential benefit of IFN-γ- and/or IL-6-specific antibody-mediated cytokine neutralization was explored in C57BL/6 mice infected with the influenza A/PR/8/34 strain, which were subsequently infected with the Streptococcus pneumoniae strain TIGR4 on day 7 post influenza. While single IL-6 neutralization had no effect on respiratory bacterial clearance, single IFN-γ neutralization enhanced local bacterial clearance in the lungs. Concomitant neutralization of IFN-γ and IL-6 significantly reduced the degree of pneumonia as well as bacteremia compared to the control group, indicating a positive effect for the host during secondary bacterial infection. The results of our model-driven experimental study reveal that the predicted therapeutic value of IFN-γ and IL-6 neutralization in secondary pneumococcal infection following influenza infection is tightly dependent on the experimental protocol while at the same time paving the way toward the development of effective immune therapies.
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Affiliation(s)
- Niharika Sharma-Chawla
- Frankfurt Institute for Advanced Studies, Frankfurt am Main, Germany.,Immune Regulation Group, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany.,Infection Immunology Group, Institute of Medical Microbiology, Infection Prevention and Control, Health Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Sabine Stegemann-Koniszewski
- Immune Regulation Group, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany.,Infection Immunology Group, Institute of Medical Microbiology, Infection Prevention and Control, Health Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Experimental Pneumology, University Hospital of Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Henrike Christen
- Immune Regulation Group, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - Julia D Boehme
- Immune Regulation Group, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany.,Infection Immunology Group, Institute of Medical Microbiology, Infection Prevention and Control, Health Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Free University Berlin, Berlin, Germany
| | - Jens Schreiber
- Experimental Pneumology, University Hospital of Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Carlos A Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany.,Centre for Individualized Infection Medicine (CiiM), Hanover, Germany
| | - Dunja Bruder
- Immune Regulation Group, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany.,Infection Immunology Group, Institute of Medical Microbiology, Infection Prevention and Control, Health Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
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23
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Cehak A, Krägeloh T, Zuraw A, Kershaw O, Brehm R, Breves G. Does prebiotic feeding affect equine gastric health? A study on the effects of prebiotic-induced gastric butyric acid production on mucosal integrity of the equine stomach. Res Vet Sci 2019; 124:303-309. [PMID: 31030117 DOI: 10.1016/j.rvsc.2019.04.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 10/16/2018] [Revised: 03/09/2019] [Accepted: 04/10/2019] [Indexed: 01/18/2023]
Abstract
Fructo-oligosaccharides are commonly administered as prebiotics to horses in order to reduce the risk of disruption of microbial populations in the hindgut. Their microbial degradation to SCFA already begins in the stomach potentially resulting in increased gastric concentrations of SCFA such as butyric acid. The impact of butyric acid on the squamous mucosa is postulated to be detrimental, its effects on the glandular mucosa are yet unknown. Thus, the aim of this study was to determine the effects of butyric acid exposure on the functional integrity and morphology of the equine nonglandular and glandular gastric mucosa using butyric acid concentrations equivalent to the ones found in horses subjected to prebiotic fructo-oligosaccharides feeding. Gastric mucosal samples of healthy horses were exposed to butyric acid using the in vitro Ussing chamber technique. Electrophysiological parameters were continuously monitored, mucosal samples were blinded and histomorphological analysis was performed using a scoring system for assessment of histopathologic changes. Exposure to butyric acid resulted in pathohistomorphological changes in the glandular mucosa and in impairment of functional mucosal integrity in the squamous and the glandular mucosa as documented by significant changes in tissue conductances (Gt). Administration of fructo-oligosaccharides as a preventive prebiotic measure to horses should therefore be carefully considered, particularly in horses known to be at risk of developing EGUS.
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Affiliation(s)
- A Cehak
- Department of Physiology, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - T Krägeloh
- Department of Physiology, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - A Zuraw
- Institute of Veterinary Pathology, Department of Veterinary Medicine, Freie Universität Berlin, Germany
| | - O Kershaw
- Institute of Veterinary Pathology, Department of Veterinary Medicine, Freie Universität Berlin, Germany
| | - R Brehm
- Institute for Anatomy, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - G Breves
- Department of Physiology, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany.
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24
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Paries S, Funcke S, Kershaw O, Failing K, Lierz M. The role of Virus "X" (Tortoise Picornavirus) in kidney disease and shell weakness syndrome in European tortoise species determined by experimental infection. PLoS One 2019; 14:e0210790. [PMID: 30779796 PMCID: PMC6380536 DOI: 10.1371/journal.pone.0210790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 01/02/2019] [Indexed: 11/19/2022] Open
Abstract
Tortoise Picornavirus (ToPV) commonly known as Virus "X" was recently discovered in juvenile European tortoises suffering from soft carapace and plastron as well as kidney disease. Therefore, this virus was a potential candidate to be a causative agent for these disease patterns. Spur thighed tortoises (Testudo graeca) seemed to be more susceptible to establish clinical symptoms than other European species like T. hermanni. Thus this trial investigated the role of ToPV in the described syndrome. Two groups of juvenile European tortoises (T. graeca and T.hermanni) each of 10 animals, were cloacally, oronasally and intracoelomically inoculated with an infectious dose (~ 2000 TICD) of a ToPV strain isolated from a diseased T. graeca. A control group of two animals of each species received non-infected cell culture supernatant. The tortoises were examined daily and pharyngeal and cloacal swabs for detection of ToPV-RNA by RT-PCR were taken from each animal every six days for a period of 6 months. At the end of the study the remaining animals were euthanised and dissected. Bacteriological and parasitological tests were performed and organ samples of all tortoises were investigated by RT-PCR for the presence of ToPV and histopathology. Animals that were euthanised at the end of the experiment, were examined for presence of specific anti-ToPV antibodies. Several animals in both inoculated groups showed retarded growth and a light shell weakness, in comparison to the control animals. Three animals were euthanised during the trial, showing reduced weight gain, retarded growth, severe shell weakness and apathy, in parallel to clinical observations in naturally infected animals. In all inoculated animals of both species an intermittent virus shedding, starting from 18 days post inoculation (d.p.i.), till 164 d.p.i. was detected, while the control animals remained negative. The virus was successfully reisolated in terrapene heart cell culture in 16 of 20 inoculated animals of both species. Histopathology of most inoculated animals revealed a lack of bone remodeling and vacuolisation in kidney tubuli which supports the described pathogenesis of nephropathy and osteodystrophy. Anti- ToPV antibody titres ranged from 1:2 to >1:256 in 13 of 20 animals, whereas all control animals were seronegative. The study proofed the Henle Koch`s postulates of ToPV as causative agent for shell dystrophy and kidney disease in both testudo species. The proposed species specific sensitivity towards clinical disease was not observed.
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Affiliation(s)
- S. Paries
- Clinic for Birds, Reptiles, Amphibians and Fish, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
- * E-mail:
| | - S. Funcke
- Clinic for Birds, Reptiles, Amphibians and Fish, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
| | - O. Kershaw
- Department of Veterinary Pathology, Freie Universitaet Berlin, Germany
| | - K. Failing
- Unit for biomathematics and Data Processing, Justus Liebig Universitiy, Giessen, Germany
| | - M. Lierz
- Clinic for Birds, Reptiles, Amphibians and Fish, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
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25
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26
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Fischer K, Doehn JM, Herr C, Lachner C, Heinrich A, Kershaw O, Voss M, Jacobson MH, Gruber AD, Clauss M, Witzenrath M, Bals R, Gutbier B, Slevogt H. Acute Moraxella catarrhalis Airway Infection of Chronically Smoke-Exposed Mice Increases Mechanisms of Emphysema Development: A Pilot Study. Eur J Microbiol Immunol (Bp) 2018; 8:128-134. [PMID: 30719329 PMCID: PMC6348706 DOI: 10.1556/1886.2018.00019] [Citation(s) in RCA: 2] [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: 07/30/2018] [Accepted: 09/07/2018] [Indexed: 12/20/2022] Open
Abstract
In chronic obstructive pulmonary disease (COPD), acute exacerbations and emphysema development are characteristics for disease pathology. COPD is complicated by infectious exacerbations with acute worsening of respiratory symptoms with Moraxella catarrhalis as one of the most frequent pathogens. Although cigarette smoke (CS) is the primary risk factor, additional molecular mechanisms for emphysema development induced by bacterial infections are incompletely understood. We investigated the impact of M. catarrhalis on emphysema development in CS exposed mice and asked whether an additional infection would induce a solubilization of pro-apoptotic and pro-inflammatory endothelial monocyte-activating-protein-2 (EMAPII) to exert its activities in the pulmonary microvas-culature and other parts of the lungs not exposed directly to CS. Mice were exposed to smoke (6 or 9 months) and/or infected with M. catarrhalis. Lungs, bronchoalveolar lavage fluid (BALF), and plasma were analyzed. CS exposure reduced ciliated area, caused rarefaction of the lungs, and induced apoptosis. EMAPII was increased independent of prior smoke exposure in BALF of infected mice. Importantly, acute M. catarrhalis infection increased release of matrixmetalloproteases-9 and -12, which are involved in emphysema development and comprise a mechanism of EMAPII release. Our data suggest that acute M. catarrhalis infection represents an independent risk factor for emphysema development in smoke-exposed mice.
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Affiliation(s)
- Katja Fischer
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Respiratory Medicine, Berlin, Germany.,Septomics Research Center, Jena University Hospital, Jena, Germany
| | - Jan-Moritz Doehn
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Respiratory Medicine, Berlin, Germany
| | - Christian Herr
- Department of Internal Medicine V - Pulmonology, Allergology, Respiratory Intensive Care Medicine, University of the Saarland, Homburg Saar, Germany
| | - Carolin Lachner
- Septomics Research Center, Jena University Hospital, Jena, Germany
| | - Annina Heinrich
- Septomics Research Center, Jena University Hospital, Jena, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität, Berlin, Germany
| | - Meike Voss
- Department of Internal Medicine V - Pulmonology, Allergology, Respiratory Intensive Care Medicine, University of the Saarland, Homburg Saar, Germany
| | - Max H Jacobson
- Pathology and Laboratory Medicine, IU School of Medicine, Indianapolis, Indiana, USA
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität, Berlin, Germany
| | - Matthias Clauss
- Indiana Center for Vascular Biology and Medicine and Department of Cellular and Integrative Physiology, Indiana University, Indianapolis, Indiana, USA
| | - Martin Witzenrath
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Respiratory Medicine, Berlin, Germany.,Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Division of Pulmonary Inflammation, Berlin, Germany
| | - Robert Bals
- Department of Internal Medicine V - Pulmonology, Allergology, Respiratory Intensive Care Medicine, University of the Saarland, Homburg Saar, Germany
| | - Birgitt Gutbier
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Respiratory Medicine, Berlin, Germany.,Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Division of Pulmonary Inflammation, Berlin, Germany
| | - Hortense Slevogt
- Septomics Research Center, Jena University Hospital, Jena, Germany
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27
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Knorr S, Anguita J, Cortazar JT, Hajdusek O, Kopáček P, Trentelman JJ, Kershaw O, Hovius JW, Nijhof AM. Preliminary Evaluation of Tick Protein Extracts and Recombinant Ferritin 2 as Anti-tick Vaccines Targeting Ixodes ricinus in Cattle. Front Physiol 2018; 9:1696. [PMID: 30568595 PMCID: PMC6290058 DOI: 10.3389/fphys.2018.01696] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/12/2018] [Indexed: 01/20/2023] Open
Abstract
Anti-tick vaccines have the potential to be an environmentally friendly and cost-effective option for tick control. In vaccine development, the identification of efficacious antigens forms the major bottleneck. In this study, the efficacy of immunization with recombinant ferritin 2 and native tick protein extracts (TPEs) against Ixodes ricinus infestations in calves was assessed in two immunization experiments. In the first experiment, each calf (n = 3) was immunized twice with recombinant ferritin 2 from I. ricinus (IrFER2), TPE consisting of soluble proteins from the internal organs of partially fed I. ricinus females, or adjuvant, respectively. In the second experiment, each calf (n = 4) was immunized with protein extracts from the midgut (ME) of partially fed females, the salivary glands (SGE) of partially fed females, a combination of ME and SGE, or adjuvant, respectively. Two weeks after the booster immunization, calves were challenged with 100 females and 200 nymphs. Blood was collected from the calves before the first and after the second immunization and fed to I. ricinus females and nymphs using an in vitro artificial tick feeding system. The two calves vaccinated with whole TPE and midgut extract (ME) showed hyperemia on tick bite sites 2 days post tick infestation and exudative blisters were observed in the ME-vaccinated animal, signs that were suggestive of a delayed type hypersensitivity (DTH) reaction. Significantly fewer ticks successfully fed on the three animals vaccinated with TPE, SGE, or ME. Adults fed on the TPE and ME vaccinated animals weighed significantly less. Tick feeding on the IrFER2 vaccinated calf was not impaired. The in vitro feeding of serum or fresh whole blood collected from the vaccinated animals did not significantly affect tick feeding success. Immunization with native I. ricinus TPEs thus conferred a strong immune response in calves and significantly reduced the feeding success of both nymphs and adults. In vitro feeding of serum or blood collected from vaccinated animals to ticks did not affect tick feeding, indicating that antibodies alone were not responsible for the observed vaccine immunity.
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Affiliation(s)
- Sarah Knorr
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Juan Anguita
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Derio, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Julen T Cortazar
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Derio, Spain
| | - Ondrej Hajdusek
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czechia
| | - Petr Kopáček
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czechia
| | - Jos J Trentelman
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Joppe W Hovius
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Ard M Nijhof
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
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28
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Oyama N, Winek K, Bäcker-Koduah P, Zhang T, Dames C, Werich M, Kershaw O, Meisel C, Meisel A, Dirnagl U. Exploratory Investigation of Intestinal Function and Bacterial Translocation After Focal Cerebral Ischemia in the Mouse. Front Neurol 2018; 9:937. [PMID: 30510535 PMCID: PMC6254134 DOI: 10.3389/fneur.2018.00937] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 07/02/2018] [Accepted: 10/16/2018] [Indexed: 12/13/2022] Open
Abstract
Background and Purpose: The gut communicates with the brain bidirectionally via neural, humoral and immune pathways. All these pathways are affected by acute brain lesions, such as stroke. Brain-gut communication may therefore impact on the overall outcome after CNS-injury. Until now, contradictory reports on intestinal function and translocation of gut bacteria after experimental stroke have been published. Accordingly, we aimed to specifically investigate the effects of transient focal cerebral ischemia on intestinal permeability, gut associated lymphoid tissue and bacterial translocation in an exploratory study using a well-characterized murine stroke model. Methods: After 60 min of middle cerebral artery occlusion (MCAO) we assessed intestinal morphology (time points after surgery day 0, 3, 5, 14, 21) and tight junction protein expression (occludin and claudin-1 at day 1 and 3) in 12-week-old male C57Bl/6J mice. Lactulose/mannitol/sucralose test was performed to assess intestinal permeability 24–72 h after surgery. To investigate the influence of cerebral ischemia on the local immune system of the gut, main immune cell populations in Peyer's patches (PP) were quantified by flow cytometry. Finally, we evaluated bacterial translocation to extraintestinal organs 24 and 72 h after MCAO by microbiological culture and fluorescence in situ hybridization targeting bacterial 16S rRNA. Results: Transient MCAO decreased claudin-1 expression in the ileum but not in the colon. Intestinal morphology (assessed by light microscopy) and permeability did not change measurably after MCAO. After MCAO, animals had significantly fewer B cells in PP compared to naïve mice. Conclusions: In a murine model of stroke, which leads to large brain infarctions in the middle cerebral artery territory, we did not find evidence for overt alterations neither in gut morphology, barrier proteins and permeability nor presence of intestinal bacterial translocation.
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Affiliation(s)
- Naoki Oyama
- Department of Experimental Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Center for Stroke Research Berlin, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Katarzyna Winek
- Department of Experimental Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Center for Stroke Research Berlin, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Neurocure Cluster of Excellence, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Priscilla Bäcker-Koduah
- Department of Experimental Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Neurocure Cluster of Excellence, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Tian Zhang
- Department of Experimental Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Center for Stroke Research Berlin, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Claudia Dames
- Institute for Medical Immunology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Martina Werich
- Medical Department, Division of Hepatology and Gastroenterology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Olivia Kershaw
- Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Christian Meisel
- Institute for Medical Immunology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Andreas Meisel
- Department of Experimental Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Center for Stroke Research Berlin, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Neurocure Cluster of Excellence, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Department of Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Ulrich Dirnagl
- Department of Experimental Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Center for Stroke Research Berlin, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Neurocure Cluster of Excellence, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,Department of Neurology, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt Universitäts zu Berlin and Berlin Institute of Health, Berlin, Germany.,German Center for Neurodegenerative Diseases (DZNE), Partner Site Berlin, Berlin, Germany.,QUEST - Center for Transforming Biomedical Research, Berlin Institute of Health, Berlin, Germany
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Wibbelt G, Tausch SH, Dabrowski PW, Kershaw O, Nitsche A, Schrick L. Berlin Squirrelpox Virus, a New Poxvirus in Red Squirrels, Berlin, Germany. Emerg Infect Dis 2018; 23:1726-1729. [PMID: 28930029 PMCID: PMC5621524 DOI: 10.3201/eid2310.171008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Near Berlin, Germany, several juvenile red squirrels (Sciurus vulgaris) were found with moist, crusty skin lesions. Histology, electron microscopy, and cell culture isolation revealed an orthopoxvirus-like infection. Subsequent PCR and genome analysis identified a new poxvirus (Berlin squirrelpox virus) that could not be assigned to any known poxvirus genera.
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Hinzmann B, Kershaw O, Lahrmann K, Töpfer M. Adenokarzinom der Milchdrüse bei einem Göttinger Minipig. Tierarztl Prax Ausg G Grosstiere Nutztiere 2018; 46:102-107. [DOI: 10.15653/tpg-170739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ZusammenfassungDer Fallbericht beschreibt eine tumoröse Umfangsvermehrung der Milchdrüse eines 10 Jahre alten, weiblichen Göttinger Minipigs. Auffällige klinische Befunde waren eine entzündliche Umfangsvermehrung eines Gesäugekomplexes mit Hautläsion der Zitze und Abfluss eines übelriechenden, dünnflüssigen Sekrets. Zudem zeigte das Tier ein reduziertes Allgemeinbefinden mit Schmerzäußerungen, Inappetenz und Dehydratation. Die erfolgte Mastektomie mit histopathologischer Untersuchung des Gewebes führte zur Diagnose eines Adenokarzinoms. Das Schwein erholte sich komplikationslos und war 6 Monate nach der Operation symptomfrei.
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Weingart C, Raila J, Lübke-Becker A, Kershaw O, Brunnberg M, Kohn B. [Calcitriol induced hypercalcemia in a hunting dog with a disseminated Paecilomyces variotii infection]. SCHWEIZ ARCH TIERH 2018; 160:313-319. [PMID: 29717985 DOI: 10.17236/sat00161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
INTRODUCTION A 5-year old hunting dog was presented with reduced appetite, weight loss and polyuria/polydipsia. Hematology and clinical chemistry revealed anemia, leukocytosis, increased liver enzymes, hypoalbuminemia and hypercalcemia. The cytological, pathohistological and microbiological examination identified a disseminated infection with the saprophytic mould fungus Paecilomyces variotii in the biopsies of the spleen and a lymph node. Determination of vitamin D metabolites confirmed a calcitriol induced hypercalcemia.
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Affiliation(s)
- C Weingart
- Klinik für kleine Haustiere, Fachbereich Veterinärmedizin, Freie Universität Berlin
| | - J Raila
- Institut für Ernährungswissenschaft, Universität Potsdam
| | - A Lübke-Becker
- Institut für Mikrobiologie und Tierseuchen, Fachbereich Veterinärmedizin, Freie Universität Berlin
| | - O Kershaw
- Institut für Tierpathologie, Fachbereich Veterinärmedizin, Freie Universität Berlin
| | - M Brunnberg
- Klinik für kleine Haustiere, Fachbereich Veterinärmedizin, Freie Universität Berlin
| | - B Kohn
- Klinik für kleine Haustiere, Fachbereich Veterinärmedizin, Freie Universität Berlin
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32
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Bertram CA, Gurtner C, Dettwiler M, Kershaw O, Dietert K, Pieper L, Pischon H, Gruber AD, Klopfleisch R. Validation of Digital Microscopy Compared With Light Microscopy for the Diagnosis of Canine Cutaneous Tumors. Vet Pathol 2018; 55:490-500. [PMID: 29402206 DOI: 10.1177/0300985818755254] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Integration of new technologies, such as digital microscopy, into a highly standardized laboratory routine requires the validation of its performance in terms of reliability, specificity, and sensitivity. However, a validation study of digital microscopy is currently lacking in veterinary pathology. The aim of the current study was to validate the usability of digital microscopy in terms of diagnostic accuracy, speed, and confidence for diagnosing and differentiating common canine cutaneous tumor types and to compare it to classical light microscopy. Therefore, 80 histologic sections including 17 different skin tumor types were examined twice as glass slides and twice as digital whole-slide images by 6 pathologists with different levels of experience at 4 time points. Comparison of both methods found digital microscopy to be noninferior for differentiating individual tumor types within the category epithelial and mesenchymal tumors, but diagnostic concordance was slightly lower for differentiating individual round cell tumor types by digital microscopy. In addition, digital microscopy was associated with significantly shorter diagnostic time, but diagnostic confidence was lower and technical quality was considered inferior for whole-slide images compared with glass slides. Of note, diagnostic performance for whole-slide images scanned at 200× magnification was noninferior in diagnostic performance for slides scanned at 400×. In conclusion, digital microscopy differs only minimally from light microscopy in few aspects of diagnostic performance and overall appears adequate for the diagnosis of individual canine cutaneous tumors with minor limitations for differentiating individual round cell tumor types and grading of mast cell tumors.
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Affiliation(s)
- Christof A Bertram
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Corinne Gurtner
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany.,2 Institute of Animal Pathology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Martina Dettwiler
- 2 Institute of Animal Pathology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Olivia Kershaw
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Kristina Dietert
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Laura Pieper
- 3 Institute for Veterinary Epidemiology and Biostatistics, Freie Universität Berlin, Berlin, Germany
| | - Hannah Pischon
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Achim D Gruber
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Robert Klopfleisch
- 1 Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
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Kershaw O, Schmitz R, Gehlen H, Winter J. Das equine leukämische Lymphom – eine seltene Unterart des equinen Lymphoms. Tierarztl Prax Ausg G Grosstiere Nutztiere 2018. [DOI: 10.1055/s-0038-1623240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ZusammenfassungDas equine leukämische Lymphom ist eine selten vorkommende Erkrankung des hämatopoetischen Gewebes. Es entsteht durch neoplastische Entartung von B- und T-Lymphozyten im Lymphgewebe und deren Auftreten in der Blutbahn. Die klinischen Symptome sind häufig unspezifisch und umfassen chronischen Gewichtsverlust, Ödeme an Unterbrust und Unterbauch sowie regionale Lymphadenopathien. Häufig werden die Pferde erst spät im Krankheitsverlauf vorgestellt und die Behandlung führt selten zum Erfolg. Die Übersichtsarbeit beschreibt klinische Symptome des equinen leukämischen Lymphoms, Befunde der labordiagnostischen sowie anderer weiterführender Untersuchungen und stellt die bisher aus der Literatur bekannten Therapieansätze dar.
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Anders K, Kershaw O, Larue L, Gruber AD, Blankenstein T. The immune system prevents recurrence of transplanted but not autochthonous antigenic tumors after oncogene inactivation therapy. Int J Cancer 2017; 141:2551-2561. [PMID: 28833076 DOI: 10.1002/ijc.31009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 06/29/2017] [Revised: 08/11/2017] [Accepted: 08/15/2017] [Indexed: 12/22/2022]
Abstract
Targeted oncogene inactivation by small molecule inhibitors can be very effective but tumor recurrence is a frequent problem in the clinic. Therapy by inactivation of the cancer-driving oncogene in transplanted tumors was shown to be augmented in the presence of T cells. However, these experiments did not take into account the long-term, usually tolerogenic, interaction of de novo malignancies with the immune system. Here, we employed mice, in which SV40 large T (Tag) and firefly luciferase (Luc) as fusion protein (TagLuc) could be regulated with the Tet-on system and upon activation resulted in tumors after a long latency. TagLuc inactivation induced profound tumor regression, demonstrating sustained oncogene addiction. While tumor relapse after TagLuc inactivation was prevented in immunocompetent mice bearing transplanted tumors, autochthonous tumors relapsed or recurred after therapy discontinuation indicating that the immune system that coevolved with the malignancy over an extended period of time lost the potency to mount an efficient anti-tumor immune response. By contrast, adoptively transferred CD8+ T cells targeting the cancer-driving oncogene eradicated recurrent autochthonous tumors, highlighting a suitable therapy option in a clinically relevant model.
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Affiliation(s)
| | | | - Lionel Larue
- Normal and Pathological Development of Melanocytes, 91405 Orsay, France.,Centre National de la Recherche Scientifique (CNRS) UMR3347, 91405 Orsay, France.,INSERM U1021, 91405 Orsay, France.,Equipe Labellisee e Ligue Nationale contre le Cancer, 91405 Orsay, France
| | | | - Thomas Blankenstein
- Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.,Institute of Immunology, Charité Campus Berlin Buch, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany
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35
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Peter A, Fatykhova D, Kershaw O, Gruber AD, Rueckert J, Neudecker J, Toennies M, Bauer TT, Schneider P, Schimek M, Eggeling S, Suttorp N, Hocke AC, Hippenstiel S. Localization and pneumococcal alteration of junction proteins in the human alveolar-capillary compartment. Histochem Cell Biol 2017; 147:707-719. [PMID: 28247028 DOI: 10.1007/s00418-017-1551-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2017] [Indexed: 02/03/2023]
Abstract
Loss of alveolar barrier function with subsequent respiratory failure is a hallmark of severe pneumonia. Although junctions between endo- and epithelial cells regulate paracellular fluid flux, little is known about their composition and regulation in the human alveolar compartment. High autofluorescence of human lung tissue in particular complicates the determination of subcellular protein localization. By comparing conventional channel mode confocal imaging with spectral imaging and linear unmixing, we demonstrate that background fluorescent spectra and fluorophore signals could be rigorously separated resulting in complete recovery of the specific signal at a high signal-to-noise ratio. Using this technique and Western blotting, we show the expression patterns of tight junction proteins occludin, ZO-1 as well as claudin-3, -4, -5 and -18 and adherence junction protein VE-cadherin in naive or Streptococcus pneumoniae-infected human lung tissue. In uninfected tissues, occludin and ZO-1 formed band-like structures in alveolar epithelial cells type I (AEC I), alveolar epithelial cells type II (AEC II) and lung capillaries, whereas claudin-3, -4 and -18 were visualised in AEC II. Claudin-5 was detected in the endothelium only. Claudin-3, -5, -18 displayed continuous band-like structures, while claudin-4 showed a dot-like expression. Pneumococcal infection reduced alveolar occludin, ZO-1, claudin-5 and VE-cadherin but did not change the presence of claudin-3, -4 and -18. Spectral confocal microscopy allows for the subcellular structural analysis of proteins in highly autofluorescent human lung tissue. The thereby observed deterioration of lung alveolar junctional organisation gives a structural explanation for alveolar barrier disruption in severe pneumococcal pneumonia.
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Affiliation(s)
- Andrea Peter
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Department for Bioanalytics, Institute of Biotechnology, Technische Universität Berlin, 13355, Berlin, Germany
| | - Diana Fatykhova
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Strasse 15, 14163, Berlin, Germany
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Strasse 15, 14163, Berlin, Germany
| | - Jens Rueckert
- Department of General, Visceral, Vascular and Thoracic Surgery, Charité-Universitätsmedizin Berlin, Chariteplatz 1, 10117, Berlin, Germany
| | - Jens Neudecker
- Department of General, Visceral, Vascular and Thoracic Surgery, Charité-Universitätsmedizin Berlin, Chariteplatz 1, 10117, Berlin, Germany
| | - Mario Toennies
- Lungenklinik Heckeshorn, HELIOS Klinikum Emil von Behring, Walterhöferstrasse 11, 14165, Berlin, Germany
| | - Torsten T Bauer
- Lungenklinik Heckeshorn, HELIOS Klinikum Emil von Behring, Walterhöferstrasse 11, 14165, Berlin, Germany
| | - Paul Schneider
- Department for General and Thoracic Surgery, DRK Clinics, Drontheimer Strasse 39-40, 13359, Berlin, Germany
| | - Maria Schimek
- Vivantes Netzwerk für Gesundheit, Klinikum Neukölln, Klinik für Thoraxchirurgie, Berlin, Rudower Straße 48, 12351, Berlin, Germany
| | - Stephan Eggeling
- Vivantes Netzwerk für Gesundheit, Klinikum Neukölln, Klinik für Thoraxchirurgie, Berlin, Rudower Straße 48, 12351, Berlin, Germany
| | - Norbert Suttorp
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Andreas C Hocke
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Stefan Hippenstiel
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany. .,Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
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Merz SE, Pischon H, Krücken J, Lehmann B, Kershaw O, Gruber AD. Echinococcus equinus: First Case in Northern Germany. PFERDEHEILKUNDE 2017. [DOI: 10.21836/pem20170502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Merz S, Binder S, Röhker C, Kershaw O, Breithaupt A, Neurath H, Klopfleisch R. Why Dogs Should Not Chew Gum. J Comp Pathol 2017. [DOI: 10.1016/j.jcpa.2016.11.175] [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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Ertelt A, Kershaw O, Förster C, König M, Gehlen H. Investigation of a Putative Novel Papillomavirus that causes InvertedPapillomas in Horses. ACTA ACUST UNITED AC 2017. [DOI: 10.4172/2161-0517.1000169] [Citation(s) in RCA: 2] [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: 11/09/2022]
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Hüske C, Sander SE, Hamann M, Kershaw O, Richter F, Richter A. Towards optimized anesthesia protocols for stereotactic surgery in rats: Analgesic, stress and general health effects of injectable anesthetics. A comparison of a recommended complete reversal anesthesia with traditional chloral hydrate monoanesthesia. Brain Res 2016; 1642:364-375. [DOI: 10.1016/j.brainres.2016.04.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 03/17/2016] [Accepted: 04/07/2016] [Indexed: 11/29/2022]
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40
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Binici C, Plog S, Kershaw O, Schmicke M, van der Kolk JH, Müller KE. Insulinoma in a 5-Year-Old Dexter Cow. J Vet Intern Med 2016; 30:1402-6. [PMID: 27236715 PMCID: PMC5089590 DOI: 10.1111/jvim.13953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 03/24/2016] [Accepted: 04/12/2016] [Indexed: 11/29/2022] Open
Affiliation(s)
- C Binici
- Clinic for Ruminants and Swine, Department of Veterinary Medicine, Freie Universität, Berlin, Germany
| | - S Plog
- Institute of Veterinary Pathology, Department of Veterinary Medicine, Freie Universität, Berlin, Germany
| | - O Kershaw
- Institute of Veterinary Pathology, Department of Veterinary Medicine, Freie Universität, Berlin, Germany
| | - M Schmicke
- Clinic for Cattle, Endocrinology, University of Veterinary Medicine, Hannover, Germany
| | - J H van der Kolk
- Swiss Institute for Equine Medicine (ISME), Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern and Agroscope, Bern, Switzerland
| | - K E Müller
- Clinic for Ruminants and Swine, Department of Veterinary Medicine, Freie Universität, Berlin, Germany
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Abstract
The article describes the isolation of a cowpox virus (CPXV) isolate originating from a horse. The skin of a foal, aborted in the third trimester, displayed numerous cutaneous papules. The histological examination showed A-type inclusion bodies within the lesion, typical for CPXV infections. This suspicion was confirmed by real-time PCR where various organs were analyzed. From skin samples, virus isolation was successfully performed. Afterwards, the whole genome of this new isolate "CPXV Amadeus" was sequenced by next-generation technology. Phylogenetic analysis clearly showed that "CPXV Amadeus" belongs to the "CPXV-like 1" clade. To our opinion, the study provides important additional information on rare accidental CPXV infections. From the natural hosts, the voles, species such as rats, cats, or different zoo animals are occasionally infected, but until now only two horse cases are described. In addition, there are new insights toward congenital CPXV infections.
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Affiliation(s)
- Annika Franke
- 1 Institute of Diagnostic Virology , Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Olivia Kershaw
- 2 Department of Veterinary Pathology, Freie Universität Berlin , Berlin, Germany
| | - Maria Jenckel
- 1 Institute of Diagnostic Virology , Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Lydia König
- 2 Department of Veterinary Pathology, Freie Universität Berlin , Berlin, Germany
| | - Martin Beer
- 1 Institute of Diagnostic Virology , Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Bernd Hoffmann
- 1 Institute of Diagnostic Virology , Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Donata Hoffmann
- 1 Institute of Diagnostic Virology , Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
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Winek K, Engel O, Koduah P, Heimesaat MM, Fischer A, Bereswill S, Dames C, Kershaw O, Gruber AD, Curato C, Oyama N, Meisel C, Meisel A, Dirnagl U. Depletion of Cultivatable Gut Microbiota by Broad-Spectrum Antibiotic Pretreatment Worsens Outcome After Murine Stroke. Stroke 2016; 47:1354-63. [PMID: 27056982 PMCID: PMC4839545 DOI: 10.1161/strokeaha.115.011800] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [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: 10/13/2015] [Accepted: 03/07/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND PURPOSE Antibiotics disturbing microbiota are often used in treatment of poststroke infections. A bidirectional brain-gut microbiota axis was recently suggested as a modulator of nervous system diseases. We hypothesized that gut microbiota may be an important player in the course of stroke. METHODS We investigated the outcome of focal cerebral ischemia in C57BL/6J mice after an 8-week decontamination with quintuple broad-spectrum antibiotic cocktail. These microbiota-depleted animals were subjected to 60 minutes middle cerebral artery occlusion or sham operation. Infarct volume was measured using magnetic resonance imaging, and mice were monitored clinically throughout the whole experiment. At the end point, tissues were preserved for further analysis, comprising histology and immunologic investigations using flow cytometry. RESULTS We found significantly decreased survival in the middle cerebral artery occlusion microbiota-depleted mice when the antibiotic cocktail was stopped 3 days before surgery (compared with middle cerebral artery occlusion specific pathogen-free and sham-operated microbiota-depleted mice). Moreover, all microbiota-depleted animals in which antibiotic treatment was terminated developed severe acute colitis. This phenotype was rescued by continuous antibiotic treatment or colonization with specific pathogen-free microbiota before surgery. Further, infarct volumes on day one did not differ between any of the experimental groups. CONCLUSIONS Conventional microbiota ensures intestinal protection in the mouse model of experimental stroke and prevents development of acute and severe colitis in microbiota-depleted mice not given antibiotic protection after cerebral ischemia. Our experiments raise the clinically important question as to whether microbial colonization or specific microbiota are crucial for stroke outcome.
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Affiliation(s)
- Katarzyna Winek
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Odilo Engel
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Priscilla Koduah
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Markus M Heimesaat
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - André Fischer
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Stefan Bereswill
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Claudia Dames
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Olivia Kershaw
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Achim D Gruber
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Caterina Curato
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Naoki Oyama
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Christian Meisel
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Andreas Meisel
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.)
| | - Ulrich Dirnagl
- From the Department of Experimental Neurology (K.W., O.E., P.K., N.O., A.M., U.D.), NeuroCure Clinical Research (K.W., C.C., A.M., U.D.), Center for Stroke Research Berlin (K.W., O.E., P.K., A.M., U.D.), Department of Microbiology and Hygiene (M.M.H., A.F., S.B.), Institute for Medical Immunology (C.D., C.M.), and Department of Neurology (A.M., U.D.), Charité - Universitätsmedizin Berlin, Germany; Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Germany (O.K., A.D.G.); German Rheumatism Research Center (DRFZ), Berlin, Germany (C.C.); and German Center for Neurodegeneration Research (DZNE), partner site Berlin, Germany (U.D.).
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Naujoks J, Tabeling C, Dill BD, Hoffmann C, Brown AS, Kunze M, Kempa S, Peter A, Mollenkopf HJ, Dorhoi A, Kershaw O, Gruber AD, Sander LE, Witzenrath M, Herold S, Nerlich A, Hocke AC, van Driel I, Suttorp N, Bedoui S, Hilbi H, Trost M, Opitz B. IFNs Modify the Proteome of Legionella-Containing Vacuoles and Restrict Infection Via IRG1-Derived Itaconic Acid. PLoS Pathog 2016; 12:e1005408. [PMID: 26829557 PMCID: PMC4734697 DOI: 10.1371/journal.ppat.1005408] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/30/2015] [Indexed: 11/21/2022] Open
Abstract
Macrophages can be niches for bacterial pathogens or antibacterial effector cells depending on the pathogen and signals from the immune system. Here we show that type I and II IFNs are master regulators of gene expression during Legionella pneumophila infection, and activators of an alveolar macrophage-intrinsic immune response that restricts bacterial growth during pneumonia. Quantitative mass spectrometry revealed that both IFNs substantially modify Legionella-containing vacuoles, and comparative analyses reveal distinct subsets of transcriptionally and spatially IFN-regulated proteins. Immune-responsive gene (IRG)1 is induced by IFNs in mitochondria that closely associate with Legionella-containing vacuoles, and mediates production of itaconic acid. This metabolite is bactericidal against intravacuolar L. pneumophila as well as extracellular multidrug-resistant Gram-positive and -negative bacteria. Our study explores the overall role IFNs play in inducing substantial remodeling of bacterial vacuoles and in stimulating production of IRG1-derived itaconic acid which targets intravacuolar pathogens. IRG1 or its product itaconic acid might be therapeutically targetable to fight intracellular and drug-resistant bacteria. Numerous intracellular bacterial pathogens replicate in specialized vacuoles within macrophages. We systematically study the molecular mechanism and the impact of macrophage-intrinsic antibacterial defense. Using L. pneumophila, an important cause of pneumonia and model organism for intracellular bacteria, we found that type I and II interferons critically modify the proteome of bacterial vacuoles to restrict infection. We identify IRG1 and demonstrate a bactericidal activity of its metabolite itaconic acid on bacteria in their vacuole. Moreover, our study provides evidence for the impact of this cell-autonomous defense pathway in alveolar macrophages to restrict lung infection. We speculate that vacuolar IRG1 or its product itaconic acid could serve as future therapeutic targets to fight intracellular and drug-resistant bacteria.
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Affiliation(s)
- Jan Naujoks
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Christoph Tabeling
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Brian D. Dill
- MRC Protein Phosphorylation Unit, University of Dundee, Dundee, United Kingdom
| | - Christine Hoffmann
- Max-von-Pettenkofer Institute, Ludwig Maximilian University, Munich, Germany
| | - Andrew S. Brown
- The Department of Biochemistry and Molecular Biology, The University of Melbourne, Melbourne, Australia
| | - Mareike Kunze
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Stefan Kempa
- Integrative Metabolomics and Proteomics, Institute of Medical Systems Biology/Max-Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Andrea Peter
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | | | - Anca Dorhoi
- Max Planck Institute for Infection Biology, Berlin, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Free University Berlin, Berlin, Germany
| | - Achim D. Gruber
- Department of Veterinary Pathology, Free University Berlin, Berlin, Germany
| | - Leif E. Sander
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Martin Witzenrath
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Susanne Herold
- Medizinische Klinik II, University Giessen and Marburg Lung Center, Justus-Liebig-University Giessen, Giessen, Germany
| | - Andreas Nerlich
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Andreas C. Hocke
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Ian van Driel
- The Department of Biochemistry and Molecular Biology, The University of Melbourne, Melbourne, Australia
| | - Norbert Suttorp
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
| | - Sammy Bedoui
- The Department of Microbiology and Immunology, The University of Melbourne, Melbourne, Australia
| | - Hubert Hilbi
- Max-von-Pettenkofer Institute, Ludwig Maximilian University, Munich, Germany
- Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - Matthias Trost
- MRC Protein Phosphorylation Unit, University of Dundee, Dundee, United Kingdom
| | - Bastian Opitz
- Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité University Medicine Berlin, Berlin, Germany
- * E-mail:
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Zahlten J, Herta T, Kabus C, Steinfeldt M, Kershaw O, García P, Hocke AC, Gruber AD, Hübner RH, Steinicke R, Doehn JM, Suttorp N, Hippenstiel S. Role of Pneumococcal Autolysin for KLF4 Expression and Chemokine Secretion in Lung Epithelium. Am J Respir Cell Mol Biol 2015; 53:544-54. [PMID: 25756955 DOI: 10.1165/rcmb.2014-0024oc] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
In severe pneumococcal pneumonia, the delicate balance between a robust inflammatory response necessary to kill bacteria and the loss of organ function determines the outcome of disease. In this study, we tested the hypothesis that Krueppel-like factor (KLF) 4 may counter-regulate Streptococcus pneumoniae-related human lung epithelial cell activation using the potent proinflammatory chemokine IL-8 as a model molecule. Pneumococci induced KLF4 expression in human lung, in primary human bronchial epithelial cells, and in the lung epithelial cell line BEAS-2B. Whereas proinflammatory cell activation depends mainly on the classical Toll-like receptor 2-mitogen-activated protein kinase or phosphatidylinositide 3-kinase and NF-κB pathways, the induction of KLF4 occurred independently of these molecules but relied, in general, on tyrosine kinase activation and, in part, on the src kinase family member yamaguchi sarcoma viral oncogene homolog (yes) 1. The up-regulation of KLF4 depended on the activity of the main pneumococcal autolysin LytA. KLF4 overexpression suppressed S. pneumoniae-induced NF-κB and IL-8 reporter gene activation and release, whereas small interfering RNA-mediated silencing of KLF4 or yes1 kinase led to an increase in IL-8 release. The KLF4-dependent down-regulation of NF-κB luciferase activity could be rescued by the overexpression of the histone acetylase p300/cAMP response element-binding protein-associated factor. In conclusion, KLF4 acts as a counter-regulatory transcription factor in pneumococci-related proinflammatory activation of lung epithelial cells, thereby potentially preventing lung hyperinflammation and subsequent organ failure.
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Affiliation(s)
- Janine Zahlten
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Toni Herta
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Christin Kabus
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Magdalena Steinfeldt
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Olivia Kershaw
- 2 Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Pedro García
- 3 Departamento de Microbiología Molecular, Centro de Investigaciones Biologicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain; and.,4 CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - Andreas C Hocke
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Achim D Gruber
- 2 Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Ralf-Harto Hübner
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Robert Steinicke
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Jan-Moritz Doehn
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Norbert Suttorp
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Stefan Hippenstiel
- 1 Department of Internal Medicine/Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
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45
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Maier K, Fischer D, Hartmann A, Kershaw O, Prenger-Berninghoff E, Pendl H, Schmidt MJ, Lierz M. Vertebral Osteomyelitis and Septic Arthritis Associated With Staphylococcus hyicus in a Juvenile Peregrine Falcon ( Falco peregrinus ). J Avian Med Surg 2015; 29:216-23. [PMID: 26378668 DOI: 10.1647/2014-036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 6-week-old, parent-reared peregrine falcon ( Falco peregrinus ) was presented with spastic hypertonus of its hind limbs of unknown origin and duration. Radiologic examination revealed smooth periosteal reactions ventrally at thoracic vertebrae 5 to 7. Contrast-enhanced computed tomography identified the swelling as inflammation; antibiotic, antimycotic, anti-inflammatory, and analgesic treatments were initiated, and vitamins and minerals were supplemented. Because the bird's condition did not improve after 10 days, it was euthanatized and submitted for postmortem examination. On histopathologic examination, chronic, active osteomyelitis was diagnosed in thoracic vertebrae 5 to 7, and chronic, active arthritis was present in both the right shoulder and left elbow joints. Staphylococcus hyicus was isolated from these 3 locations, as well as from lungs and liver, indicating a chronic septic staphylococcosis. Although infections with Staphylococcus species are occasional causes of vertebral osteomyelitis in juvenile poultry with active growth plates, it is only sporadically reported in raptors and companion birds. This case report is the first description of the clinical features and diagnostic and pathologic findings in a juvenile peregrine falcon with hematogenous osteomyelitis and arthritis associated with septicemia caused by S hyicus.
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46
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Willenberg I, Ostermann AI, Giovannini S, Kershaw O, von Keutz A, Steinberg P, Schebb NH. Effect of acute and chronic DSS induced colitis on plasma eicosanoid and oxylipin levels in the rat. Prostaglandins Other Lipid Mediat 2015; 120:155-60. [DOI: 10.1016/j.prostaglandins.2015.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/28/2015] [Accepted: 04/07/2015] [Indexed: 11/26/2022]
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Velaga S, Ukena SN, Dringenberg U, Alter C, Pardo J, Kershaw O, Franzke A. Granzyme A Is Required for Regulatory T-Cell Mediated Prevention of Gastrointestinal Graft-versus-Host Disease. PLoS One 2015; 10:e0124927. [PMID: 25928296 PMCID: PMC4415808 DOI: 10.1371/journal.pone.0124927] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 03/11/2015] [Indexed: 01/08/2023] Open
Abstract
In our previous work we could identify defects in human regulatory T cells (Tregs) likely favoring the development of graft-versus-host disease (GvHD) following allogeneic stem cell transplantation (SCT). Treg transcriptome analyses comparing GvHD and immune tolerant patients uncovered regulated gene transcripts highly relevant for Treg cell function. Moreover, granzyme A (GZMA) also showed a significant lower expression at the protein level in Tregs of GvHD patients. GZMA induces cytolysis in a perforin-dependent, FAS-FASL independent manner and represents a cell-contact dependent mechanism for Tregs to control immune responses. We therefore analyzed the functional role of GZMA in a murine standard model for GvHD. For this purpose, adoptively transferred CD4+CD25+ Tregs from gzmA-/- mice were analyzed in comparison to their wild type counterparts for their capability to prevent murine GvHD. GzmA-/- Tregs home efficiently to secondary lymphoid organs and do not show phenotypic alterations with respect to activation and migration properties to inflammatory sites. Whereas gzmA-/- Tregs are highly suppressive in vitro, Tregs require GZMA to rescue hosts from murine GvHD, especially regarding gastrointestinal target organ damage. We herewith identify GZMA as critical effector molecule of human Treg function for gastrointestinal immune response in an experimental GvHD model.
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Affiliation(s)
- Sarvari Velaga
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Sya N. Ukena
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Ulrike Dringenberg
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Christina Alter
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Julian Pardo
- Immune Effector Cells Group (ICE), Biomedical Research Centre of Aragon (CIBA), Zaragoza, Spain
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Anke Franzke
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
- * E-mail:
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48
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Berg J, Hellwig K, Stoll D, Becher A, Wolff T, Tönnies M, Bauer TT, Schneider P, Neudecker J, Rückert JC, Kershaw O, Gruber AD, Suttorp N, Hippenstiel S, Hocke AC. IVA induced IFNs facilitate development of secondary pneumococcal pneumonia in human lung tissue. Pneumologie 2015. [DOI: 10.1055/s-0035-1548631] [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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49
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Peter A, Kershaw O, Gruber AD, Hocke AC, Suttorp N, Hippenstiel S. Studies on cell junctions in an ex vivo human lung infection model. Pneumologie 2015. [DOI: 10.1055/s-0035-1548641] [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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50
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Doehn JM, Hausner M, Kershaw O, Reppe K, Dames C, Pillich H, Chakraborty T, Gruber A, Suttorp N, Witzenrath M, Hippenstiel S. Pneumolysin-induzierter einseitiger Lungenschaden im Modell der langzeit-beatmeten Ratte. Pneumologie 2015. [DOI: 10.1055/s-0035-1544860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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