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Umkehrer S, Morrone C, Dinkel J, Aigner L, Reiser MF, Herzen J, Yildirim AÖ, Pfeiffer F, Hellbach K. A proof-of principal study using phase-contrast imaging for the detection of large airway pathologies after lung transplantation. Sci Rep 2020; 10:18444. [PMID: 33116193 PMCID: PMC7595203 DOI: 10.1038/s41598-020-75185-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 10/08/2020] [Indexed: 11/09/2022] Open
Abstract
In this study we aim to evaluate the assessment of bronchial pathologies in a murine model of lung transplantation with grating-based X-ray interferometry in vivo. Imaging was performed using a dedicated grating-based small-animal X-ray dark-field and phase-contrast scanner. While the contrast modality of the dark-field signal already showed several promising applications for diagnosing various types of pulmonary diseases, the phase-shifting contrast mechanism of the phase contrast has not yet been evaluated in vivo. For this purpose, qualitative analysis of phase-contrast images was performed and revealed pathologies due to previous lung transplantation, such as unilateral bronchial stenosis or bronchial truncation. Dependent lung parenchyma showed a strong loss in dark-field and absorption signal intensity, possibly caused by several post transplantational pathologies such as atelectasis, pleural effusion, or pulmonary infiltrates. With this study, we are able to show that bronchial pathologies can be visualized in vivo using conventional X-ray imaging when phase-contrast information is analysed. Absorption and dark-field images can be used to quantify the severity of lack of ventilation in the affected lung.
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Affiliation(s)
- Stephan Umkehrer
- Chair of Biomedical Physics, Physics Department & Munich School of BioEngineering, Technical University of Munich (TUM), Garching, Germany.
| | - Carmela Morrone
- Member of the German Center for Lung Research (DZL), Comprehensive Pneumology Center Munich (CPC-M), Ludwig-Maximilians University Munich, Munich, Germany
| | - Julien Dinkel
- Department of Radiology, University Hospital, Ludwig-Maximilians University Munich, Munich, Germany.,Institute of Lung Biology and Disease, Helmholtz Zentrum München, Neuherberg, Germany
| | - Laura Aigner
- Department of Radiology, University Hospital, Ludwig-Maximilians University Munich, Munich, Germany
| | - Maximilian F Reiser
- Department of Radiology, University Hospital, Ludwig-Maximilians University Munich, Munich, Germany.,Institute of Lung Biology and Disease, Helmholtz Zentrum München, Neuherberg, Germany
| | - Julia Herzen
- Chair of Biomedical Physics, Physics Department & Munich School of BioEngineering, Technical University of Munich (TUM), Garching, Germany
| | - Ali Ö Yildirim
- Member of the German Center for Lung Research (DZL), Comprehensive Pneumology Center Munich (CPC-M), Ludwig-Maximilians University Munich, Munich, Germany.,Institute of Lung Biology and Disease, Helmholtz Zentrum München, Neuherberg, Germany
| | - Franz Pfeiffer
- Chair of Biomedical Physics, Physics Department & Munich School of BioEngineering, Technical University of Munich (TUM), Garching, Germany.,Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Katharina Hellbach
- Department of Radiology, University Hospital, Ludwig-Maximilians University Munich, Munich, Germany.,Department of Diagnostic and Interventional Radiology, University Hospital of Heidelberg, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany.,Translational Lung Research Center Heidelberg (TLRC), Ruprecht-Karls-University Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany
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2
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Alhasan MM, Cait AM, Heimesaat MM, Blaut M, Klopfleisch R, Wedel A, Conlon TM, Yildirim AÖ, Sodemann EB, Mohn WW, Bereswill S, Conrad ML. Antibiotic use during pregnancy increases offspring asthma severity in a dose-dependent manner. Allergy 2020; 75:1979-1990. [PMID: 32064643 DOI: 10.1111/all.14234] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 12/07/2019] [Accepted: 12/23/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND The use of antibiotics during pregnancy is associated with increased allergic asthma risk in the offspring, and given that approximately 25% of pregnant women are prescribed antibiotics, it is important to understand the mechanisms contributing to this phenomenon. Currently, there are no studies that directly test this association experimentally. Our objective was to develop a mouse model in which antibiotic treatment during pregnancy results in increased offspring asthma susceptibility. METHODS Pregnant mice were treated daily from gestation day 8-17 with an oral solution of the antibiotic vancomycin, and three concentrations were tested. At weaning, offspring were subjected to an adjuvant-free experimental asthma protocol using ovalbumin as an allergen. The composition of the gut microbiome was determined in mothers and offspring with samples collected from five different time points; short-chain fatty acids were also analyzed in allergic offspring. RESULTS We found that maternal antibiotic treatment during pregnancy was associated with increased offspring asthma severity in a dose-dependent manner. Furthermore, maternal vancomycin treatment during pregnancy caused marked changes in the gut microbiome composition in both mothers and pups at several different time points. The increased asthma severity and intestinal microbiome changes in pups were also associated with significantly decreased cecal short-chain fatty acid concentrations. CONCLUSION Consistent with the "Developmental Origins Hypothesis," our results confirm that exposure to antibiotics during pregnancy shapes the neonatal intestinal environment and increases offspring allergic lung inflammation.
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Affiliation(s)
- Moumen M. Alhasan
- Institute of Microbiology, Infectious Diseases and Immunology Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
- Division of Psychosomatic Medicine Department of Internal Medicine Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
| | - Alissa M. Cait
- Department of Microbiology and Immunology Life Sciences Institute University of British Columbia Vancouver BC Canada
| | - Markus M. Heimesaat
- Institute of Microbiology, Infectious Diseases and Immunology Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
| | - Michael Blaut
- Department of Gastrointestinal Microbiology German Institute of Human Nutrition Potsdam‐Rehbruecke Nuthetal Germany
| | - Robert Klopfleisch
- Department of Veterinary Medicine Freie Universität Berlin Berlin Germany
| | - Alexander Wedel
- Department of Educational Psychology Institute of Education Technische Universität Berlin Berlin Germany
| | - Thomas M. Conlon
- Comprehensive Pneumology Center (CPC) Institute of Lung Biology and Disease Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL) Neuherberg Germany
| | - Ali Ö. Yildirim
- Comprehensive Pneumology Center (CPC) Institute of Lung Biology and Disease Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL) Neuherberg Germany
| | - Elisa B. Sodemann
- Institute of Microbiology, Infectious Diseases and Immunology Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
| | - William W. Mohn
- Department of Microbiology and Immunology Life Sciences Institute University of British Columbia Vancouver BC Canada
| | - Stefan Bereswill
- Institute of Microbiology, Infectious Diseases and Immunology Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
| | - Melanie L. Conrad
- Institute of Microbiology, Infectious Diseases and Immunology Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
- Division of Psychosomatic Medicine Department of Internal Medicine Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
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3
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Sodemann EB, Dähling S, Klopfleisch R, Boiarina E, Cataldo D, Alhasan MM, Yildirim AÖ, Witzenrath M, Tabeling C, Conrad ML. Maternal asthma is associated with persistent changes in allergic offspring antibody glycosylation. Clin Exp Allergy 2020; 50:520-531. [PMID: 31912551 DOI: 10.1111/cea.13559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/14/2019] [Accepted: 12/15/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Maternal asthma during pregnancy is considered an environmental risk factor for asthma development in children. Immunoglobulin G (IgG) antibodies that are transferred from the mother to the fetus are known to act in a pro- or anti-inflammatory manner depending on their glycosylation status. OBJECTIVE Using a mouse model, we examined how maternal allergic airway inflammation during pregnancy influenced offspring experimental asthma severity, as well as maternal and offspring serum IgG antibody glycosylation patterns. Additionally, the effects of maternal and offspring exposure to the same or different allergens were investigated. METHODS Female mice were either sham sensitized or sensitized to casein (CAS) or ovalbumin (OVA) before mating. Subsequently, allergic lung inflammation was induced in pregnant dams via aerosol allergen challenge (sham, CAS or OVA). After weaning, pups were subjected to an experimental asthma protocol using OVA. Asn-297 IgG glycosylation was analysed in maternal and offspring serum. RESULTS When mothers and offspring were sensitized to the same allergen (OVA-OVA), offspring had more severe experimental asthma. This was evidenced by altered antibody concentrations, increased bronchoalveolar lavage inflammatory cell influx and decreased lung tissue and lung draining lymph node regulatory T cell percentages. When mothers and offspring were sensitized to different allergens (CAS-OVA), this phenotype was no longer observed. Additionally, maternal serum from allergic mothers had significantly higher levels of pro-inflammatory IgG1, shown by decreased galactosylation and sialylation at the Asn-297 glycosylation site. Similar glycosylation patterns were observed in the serum of adult allergic offspring from allergic mothers. CONCLUSIONS AND CLINICAL RELEVANCE We observed a strong association between maternal experimental asthma during pregnancy, increased offspring airway inflammation and pro-inflammatory IgG glycosylation patterns in mothers and offspring. IgG glycosylation is not a standard measurement in the clinical setting, and we argue that it may be an important parameter to include in future clinical studies.
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Affiliation(s)
- Elisa B Sodemann
- Institute of Microbiology, Infectious Diseases and Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sabrina Dähling
- Institute of Systems Immunology, University of Würzburg, Würzburg, Germany
| | - Robert Klopfleisch
- Department of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Ekaterina Boiarina
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Didier Cataldo
- Laboratory of Tumor and Development Biology, GIGA Research Center, University of Liège, Liège, Belgium.,Department of Respiratory Diseases, CHU Liège, Liège, Belgium
| | - Moumen M Alhasan
- Institute of Microbiology, Infectious Diseases and Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Ali Ö Yildirim
- Comprehensive Pneumology Center (CPC), Institute of Lung Biology and Disease, Member of the German Center for Lung Research (DZL), Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Tabeling
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Division of Pulmonary Inflammation, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Melanie L Conrad
- Institute of Microbiology, Infectious Diseases and Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Department of Internal Medicine, Division of Psychosomatic Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
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4
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Smirnova NF, Conlon TM, Morrone C, Dorfmuller P, Humbert M, Stathopoulos GT, Umkehrer S, Pfeiffer F, Yildirim AÖ, Eickelberg O. Inhibition of B cell-dependent lymphoid follicle formation prevents lymphocytic bronchiolitis after lung transplantation. JCI Insight 2019; 4:123971. [PMID: 30728330 DOI: 10.1172/jci.insight.123971] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 01/03/2019] [Indexed: 12/14/2022] Open
Abstract
Lung transplantation (LTx) is the only therapeutic option for many patients with chronic lung disease. However, long-term survival after LTx is severely compromised by chronic rejection (chronic lung allograft dysfunction [CLAD]), which affects 50% of recipients after 5 years. The underlying mechanisms for CLAD are poorly understood, largely due to a lack of clinically relevant animal models, but lymphocytic bronchiolitis is an early sign of CLAD. Here, we report that lymphocytic bronchiolitis occurs early in a long-term murine orthotopic LTx model, based on a single mismatch (grafts from HLA-A2:B6-knockin donors transplanted into B6 recipients). Lymphocytic bronchiolitis is followed by formation of B cell-dependent lymphoid follicles that induce adjacent bronchial epithelial cell dysfunction in a spatiotemporal fashion. B cell deficiency using recipient μMT-/- mice prevented intrapulmonary lymphoid follicle formation and lymphocytic bronchiolitis. Importantly, selective inhibition of the follicle-organizing receptor EBI2, using genetic deletion or pharmacologic inhibition, prevented functional and histological deterioration of mismatched lung grafts. In sum, we provided what we believe to be a mouse model of chronic rejection and lymphocytic bronchiolitis after LTx and identified intrapulmonary lymphoid follicle formation as a target for pharmacological intervention of long-term allograft dysfunction after LTx.
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Affiliation(s)
- Natalia F Smirnova
- Comprehensive Pneumology Center, Member of the German Center for Lung Research, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Ludwig-Maximilians University Munich, Munich Germany.,Division of Respiratory Sciences and Critical Care Medicine, University of Colorado, Aurora, Colorado, USA
| | - Thomas M Conlon
- Comprehensive Pneumology Center, Member of the German Center for Lung Research, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Ludwig-Maximilians University Munich, Munich Germany
| | - Carmela Morrone
- Comprehensive Pneumology Center, Member of the German Center for Lung Research, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Ludwig-Maximilians University Munich, Munich Germany
| | - Peter Dorfmuller
- Faculty of Medicine, Paris-Sud University, Kremlin-Bicêtre, France.,Department of Pathology and INSERM U999, Pulmonary Hypertension, Pathophysiology and Novel Therapies, Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France
| | - Marc Humbert
- Faculty of Medicine, Paris-Sud University, Kremlin-Bicêtre, France.,Department of Pathology and INSERM U999, Pulmonary Hypertension, Pathophysiology and Novel Therapies, Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France
| | - Georgios T Stathopoulos
- Comprehensive Pneumology Center, Member of the German Center for Lung Research, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Ludwig-Maximilians University Munich, Munich Germany
| | - Stephan Umkehrer
- Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - Franz Pfeiffer
- Lehrstuhl für Biomedizinische Physik, Physik-Department and Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - Ali Ö Yildirim
- Comprehensive Pneumology Center, Member of the German Center for Lung Research, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Ludwig-Maximilians University Munich, Munich Germany
| | - Oliver Eickelberg
- Comprehensive Pneumology Center, Member of the German Center for Lung Research, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Ludwig-Maximilians University Munich, Munich Germany.,Division of Respiratory Sciences and Critical Care Medicine, University of Colorado, Aurora, Colorado, USA
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5
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Skronska-Wasek W, Mutze K, Baarsma HA, Bracke KR, Alsafadi HN, Lehmann M, Costa R, Stornaiuolo M, Novellino E, Brusselle GG, Wagner DE, Yildirim AÖ, Königshoff M. Reduced Frizzled Receptor 4 Expression Prevents WNT/β-Catenin-driven Alveolar Lung Repair in Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2017; 196:172-185. [PMID: 28245136 DOI: 10.1164/rccm.201605-0904oc] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Chronic obstructive pulmonary disease (COPD), in particular emphysema, is characterized by loss of parenchymal alveolar tissue and impaired tissue repair. Wingless and INT-1 (WNT)/β-catenin signaling is reduced in COPD; however, the mechanisms thereof, specifically the role of the frizzled (FZD) family of WNT receptors, remain unexplored. OBJECTIVES To identify and functionally characterize specific FZD receptors that control downstream WNT signaling in impaired lung repair in COPD. METHODS FZD expression was analyzed in lung homogenates and alveolar epithelial type II (ATII) cells of never-smokers, smokers, patients with COPD, and two experimental COPD models by quantitative reverse transcriptase-polymerase chain reaction, immunoblotting, and immunofluorescence. The functional effects of cigarette smoke on FZD4, WNT/β-catenin signaling, and elastogenic components were investigated in primary ATII cells in vitro and in three-dimensional lung tissue cultures ex vivo. Gain- and loss-of-function approaches were applied to determine the effects of FZD4 signaling on alveolar epithelial cell wound healing and repair, as well as on expression of elastogenic components. MEASUREMENTS AND MAIN RESULTS FZD4 expression was reduced in human and experimental COPD lung tissues as well as in primary human ATII cells from patients with COPD. Cigarette smoke exposure down-regulated FZD4 expression in vitro and in vivo, along with reduced WNT/β-catenin activity. Inhibition of FZD4 decreased WNT/β-catenin-driven epithelial cell proliferation and wound closure, and it interfered with ATII-to-ATI cell transdifferentiation and organoid formation, which were augmented by FZD4 overexpression. Moreover, FZD4 restoration by overexpression or pharmacological induction led to induction of WNT/β-catenin signaling and expression of elastogenic components in three-dimensional lung tissue cultures ex vivo. CONCLUSIONS Reduced FZD4 expression in COPD contributes to impaired alveolar repair capacity.
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Affiliation(s)
- Wioletta Skronska-Wasek
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Kathrin Mutze
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Hoeke A Baarsma
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Ken R Bracke
- 2 Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Hani N Alsafadi
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Mareike Lehmann
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Rita Costa
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Mariano Stornaiuolo
- 3 Department of Pharmacy, University of Naples Federico II, Naples, Italy; and
| | - Ettore Novellino
- 3 Department of Pharmacy, University of Naples Federico II, Naples, Italy; and
| | - Guy G Brusselle
- 2 Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Darcy E Wagner
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Ali Ö Yildirim
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany
| | - Melanie Königshoff
- 1 Helmholtz Zentrum Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, Munich, Germany.,4 Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado, Denver, Aurora, Colorado
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6
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Mossina A, Lukas C, Merl-Pham J, Uhl FE, Mutze K, Schamberger A, Staab-Weijnitz C, Jia J, Yildirim AÖ, Königshoff M, Hauck SM, Eickelberg O, Meiners S. Cigarette smoke alters the secretome of lung epithelial cells. Proteomics 2017; 17. [DOI: 10.1002/pmic.201600243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/22/2016] [Accepted: 11/23/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Alessandra Mossina
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
| | - Christina Lukas
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
| | - Juliane Merl-Pham
- Research Unit Protein Science; Helmholtz Zentrum München; Munich Germany
| | - Franziska E. Uhl
- Department of Medicine; Vermont Lung Center (VLC); University of Vermont; Burlington VT USA
| | - Kathrin Mutze
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
| | - Andrea Schamberger
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
| | - Claudia Staab-Weijnitz
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
| | - Jie Jia
- Comprehensive Pneumology Center (CPC), Member of the German Center for Lung Research (DZL), Institute of Lung Biology and Disease; Helmholtz Zentrum München; Munich Germany
| | - Ali Ö. Yildirim
- Comprehensive Pneumology Center (CPC), Member of the German Center for Lung Research (DZL), Institute of Lung Biology and Disease; Helmholtz Zentrum München; Munich Germany
| | - Melanie Königshoff
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
| | - Stefanie M. Hauck
- Research Unit Protein Science; Helmholtz Zentrum München; Munich Germany
| | - Oliver Eickelberg
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
- Comprehensive Pneumology Center (CPC), Member of the German Center for Lung Research (DZL), Institute of Lung Biology and Disease; Helmholtz Zentrum München; Munich Germany
| | - Silke Meiners
- Comprehensive; Pneumology Center (CPC); Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); University Hospital; Ludwig-Maximilians University; Munich Germany
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7
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Baarsma HA, Skronska-Wasek W, Mutze K, Ciolek F, Wagner DE, John-Schuster G, Heinzelmann K, Günther A, Bracke KR, Dagouassat M, Boczkowski J, Brusselle GG, Smits R, Eickelberg O, Yildirim AÖ, Königshoff M. Correction: Noncanonical WNT-5A signaling impairs endogenous lung repair in COPD. J Exp Med 2017; 214:565. [PMID: 28069639 PMCID: PMC5294856 DOI: 10.1084/jem.2016067501052017c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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8
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Baarsma HA, Skronska-Wasek W, Mutze K, Ciolek F, Wagner DE, John-Schuster G, Heinzelmann K, Günther A, Bracke KR, Dagouassat M, Boczkowski J, Brusselle GG, Smits R, Eickelberg O, Yildirim AÖ, Königshoff M. Noncanonical WNT-5A signaling impairs endogenous lung repair in COPD. J Exp Med 2016; 214:143-163. [PMID: 27979969 PMCID: PMC5206496 DOI: 10.1084/jem.20160675] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 09/16/2016] [Accepted: 11/04/2016] [Indexed: 01/17/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of death worldwide. One main pathological feature of COPD is the loss of functional alveolar tissue without adequate repair (emphysema), yet the underlying mechanisms are poorly defined. Reduced WNT-β-catenin signaling is linked to impaired lung repair in COPD; however, the factors responsible for attenuating this pathway remain to be elucidated. Here, we identify a canonical to noncanonical WNT signaling shift contributing to COPD pathogenesis. We demonstrate enhanced expression of noncanonical WNT-5A in two experimental models of COPD and increased posttranslationally modified WNT-5A in human COPD tissue specimens. WNT-5A was increased in primary lung fibroblasts from COPD patients and induced by COPD-related stimuli, such as TGF-β, cigarette smoke (CS), and cellular senescence. Functionally, mature WNT-5A attenuated canonical WNT-driven alveolar epithelial cell wound healing and transdifferentiation in vitro. Lung-specific WNT-5A overexpression exacerbated airspace enlargement in elastase-induced emphysema in vivo. Accordingly, inhibition of WNT-5A in vivo attenuated lung tissue destruction, improved lung function, and restored expression of β-catenin-driven target genes and alveolar epithelial cell markers in the elastase, as well as in CS-induced models of COPD. We thus identify a novel essential mechanism involved in impaired mesenchymal-epithelial cross talk in COPD pathogenesis, which is amenable to therapy.
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Affiliation(s)
- Hoeke A Baarsma
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Wioletta Skronska-Wasek
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Kathrin Mutze
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Florian Ciolek
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Darcy E Wagner
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Gerrit John-Schuster
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Katharina Heinzelmann
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | | | - Ken R Bracke
- Department of Respiratory Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | | | | | - Guy G Brusselle
- Department of Respiratory Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - Ron Smits
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center Rotterdam, 3000 Rotterdam, Netherlands
| | - Oliver Eickelberg
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Ali Ö Yildirim
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
| | - Melanie Königshoff
- Comprehensive Pneumology Center, Research Unit Lung Repair and Regeneration, Helmholtz Center Munich, Ludwig Maximilians University Munich, University Hospital Grosshadern, 81377 Munich, Germany
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Kammerl IE, Dann A, Mossina A, Brech D, Lukas C, Vosyka O, Nathan P, Conlon TM, Wagner DE, Overkleeft HS, Prasse A, Rosas IO, Straub T, Krauss-Etschmann S, Königshoff M, Preissler G, Winter H, Lindner M, Hatz R, Behr J, Heinzelmann K, Yildirim AÖ, Noessner E, Eickelberg O, Meiners S. Impairment of Immunoproteasome Function by Cigarette Smoke and in Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2016; 193:1230-41. [PMID: 26756824 DOI: 10.1164/rccm.201506-1122oc] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
RATIONALE Patients with chronic obstructive pulmonary disease (COPD) and in particular smokers are more susceptible to respiratory infections contributing to acute exacerbations of disease. The immunoproteasome is a specialized type of proteasome destined to improve major histocompatibility complex (MHC) class I-mediated antigen presentation for the resolution of intracellular infections. OBJECTIVES To characterize immunoproteasome function in COPD and its regulation by cigarette smoke. METHODS Immunoproteasome expression and activity were determined in bronchoalveolar lavage (BAL) and lungs of human donors and patients with COPD or idiopathic pulmonary fibrosis (IPF), as well as in cigarette smoke-exposed mice. Smoke-mediated alterations of immunoproteasome activity and MHC I surface expression were analyzed in human blood-derived macrophages. Immunoproteasome-specific MHC I antigen presentation was evaluated in spleen and lung immune cells that had been smoke-exposed in vitro or in vivo. MEASUREMENTS AND MAIN RESULTS Immunoproteasome and MHC I mRNA expression was reduced in BAL cells of patients with COPD and in isolated alveolar macrophages of patients with COPD or IPF. Exposure of immune cells to cigarette smoke extract in vitro reduced immunoproteasome activity and impaired immunoproteasome-specific MHC I antigen presentation. In vivo, acute cigarette smoke exposure dynamically regulated immunoproteasome function and MHC I antigen presentation in mouse BAL cells. End-stage COPD lungs showed markedly impaired immunoproteasome activities. CONCLUSIONS We here show that the activity of the immunoproteasome is impaired by cigarette smoke resulting in reduced MHC I antigen presentation. Regulation of immunoproteasome function by cigarette smoke may thus alter adaptive immune responses and add to prolonged infections and exacerbations in COPD and IPF.
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Affiliation(s)
- Ilona E Kammerl
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Angela Dann
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Alessandra Mossina
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Dorothee Brech
- 2 Institute of Molecular Immunology, Helmholtz Zentrum München, Munich, Germany
| | - Christina Lukas
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Oliver Vosyka
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Petra Nathan
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Thomas M Conlon
- 3 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the DZL, Neuherberg, Germany
| | - Darcy E Wagner
- 2 Institute of Molecular Immunology, Helmholtz Zentrum München, Munich, Germany
| | - Hermen S Overkleeft
- 4 Department of Bio-organic Synthesis, Leiden University, Leiden, the Netherlands
| | - Antje Prasse
- 5 Department of Pneumology, Hannover Medical School, Hannover, Germany
| | - Ivan O Rosas
- 6 Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Tobias Straub
- 7 Biomedical Center, Bioinformatics Unit, Ludwig-Maximilians University, Munich, Germany
| | - Susanne Krauss-Etschmann
- 8 Division of Experimental Asthma Research, Research Center Borstel, Airway Research Center North, Member of the DZL, Borstel, Germany
- 9 Institute of Experimental Medicine, Christian-Albrechts-Universität zu Kiel, Germany
| | - Melanie Königshoff
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Gerhard Preissler
- 10 Thoraxchirurgisches Zentrum, Klinik für Allgemeine-, Viszeral-, Transplantations-, Gefäß- und Thoraxchirurgie, Klinikum Großhadern, Ludwig-Maximilians-Universität, Member of the DZL, Munich, Germany
| | - Hauke Winter
- 10 Thoraxchirurgisches Zentrum, Klinik für Allgemeine-, Viszeral-, Transplantations-, Gefäß- und Thoraxchirurgie, Klinikum Großhadern, Ludwig-Maximilians-Universität, Member of the DZL, Munich, Germany
| | - Michael Lindner
- 11 Asklepios Fachkliniken München-Gauting, Gauting, Germany; and
| | - Rudolf Hatz
- 10 Thoraxchirurgisches Zentrum, Klinik für Allgemeine-, Viszeral-, Transplantations-, Gefäß- und Thoraxchirurgie, Klinikum Großhadern, Ludwig-Maximilians-Universität, Member of the DZL, Munich, Germany
- 11 Asklepios Fachkliniken München-Gauting, Gauting, Germany; and
| | - Jürgen Behr
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
- 11 Asklepios Fachkliniken München-Gauting, Gauting, Germany; and
- 12 Medizinische Klinik und Poliklinik V, Klinikum der Ludwig-Maximilians-Universität, Member of the DZL, Munich, Germany
| | - Katharina Heinzelmann
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Ali Ö Yildirim
- 3 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the DZL, Neuherberg, Germany
| | - Elfriede Noessner
- 2 Institute of Molecular Immunology, Helmholtz Zentrum München, Munich, Germany
| | - Oliver Eickelberg
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Silke Meiners
- 1 Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
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10
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Vock C, Yildirim AÖ, Wagner C, Schlick S, Lunding LP, Lee CG, Elias JA, Fehrenbach H, Wegmann M. Distal airways are protected from goblet cell metaplasia by diminished expression of IL-13 signalling components. Clin Exp Allergy 2016; 45:1447-58. [PMID: 25772331 DOI: 10.1111/cea.12526] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/19/2015] [Accepted: 02/25/2015] [Indexed: 01/15/2023]
Abstract
BACKGROUND Increased mucus production is a critical factor impairing lung function in patients suffering from bronchial asthma, the most common chronic inflammatory lung disease worldwide. OBJECTIVE This study aimed at investigating whether goblet cell (GC) metaplasia and mucus production are differentially regulated in proximal and distal airways. METHODS Female Balb/c mice were sensitized to ovalbumin (OVA) and challenged with an OVA-aerosol on two consecutive days for 1 week (acute) or 12 weeks (chronic). Real-time RT-PCR analysis was applied on microdissected airways. RESULTS In acutely and chronically OVA-challenged mice, GC metaplasia and mucus production were observed in proximal but not in distal airways. In contrast, inflammation reflected by the infiltration of eosinophils and expression of the TH2-type cytokines IL-4 and IL-13 was increased in both proximal and distal airways. Abundance of IL-13Rα1 was lower in distal airways of healthy control mice. Under acute and chronic OVA-exposure, activation of IL-13Rα1-dependent signalling cascade, reflected by Spdef and Foxo3A transcription factors, was attenuated in distal compared to proximal airways. CONCLUSION AND CLINICAL RELEVANCE These data indicate that distal airways might be less sensitive to IL-13-induced GC metaplasia and mucus production through lower expression of IL-13Rα1 and attenuated activation of downstream signalling. This might represent a protective strategy to prevent mucus plugging of distal airways and thus impaired ventilation of attached alveoli.
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Affiliation(s)
- C Vock
- Division of Experimental Pneumology, Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research, Borstel, Germany
| | - A Ö Yildirim
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, German Center for Lung Research, Neuherberg, Germany
| | - C Wagner
- Division of Invertebrate Models, Priority Area Asthma & Allergy, Research Center Borstel, Borstel, Germany
| | - S Schlick
- Division of Experimental Pneumology, Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research, Borstel, Germany
| | - L P Lunding
- Division of Asthma Mouse Models, Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research, Borstel, Germany
| | - C G Lee
- Frank L. Day Professor of Biology, Warren Alpert School of Medicine, Brown University, Providence, RI, USA
| | - J A Elias
- Frank L. Day Professor of Biology, Warren Alpert School of Medicine, Brown University, Providence, RI, USA
| | - H Fehrenbach
- Division of Experimental Pneumology, Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research, Borstel, Germany
| | - M Wegmann
- Division of Asthma Mouse Models, Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research, Borstel, Germany
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11
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Conlon T, Merthan L, Gailus-Durner V, Fuchs H, Hrabě de Angelis M, Furusawa T, Bustin M, Eickelberg O, Yildirim AÖ. Emphysema susceptibility is modulated by the epigenetic regulator HMGN5. Pneumologie 2016. [DOI: 10.1055/s-0036-1583492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Sarker RSJ, John-Schuster G, Bohla A, Mutze K, Burgstaller G, Bedford MT, Königshoff M, Eickelberg O, Yildirim AÖ. Coactivator-Associated Arginine Methyltransferase-1 Function in Alveolar Epithelial Senescence and Elastase-Induced Emphysema Susceptibility. Am J Respir Cell Mol Biol 2016; 53:769-81. [PMID: 25906418 DOI: 10.1165/rcmb.2014-0216oc] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by an irreversible loss of lung function and is one of the most prevalent and severe diseases worldwide. A major feature of COPD is emphysema, which is the progressive loss of alveolar tissue. Coactivator-associated arginine methyltransferase-1 (CARM1) regulates histone methylation and the transcription of genes involved in senescence, proliferation, and differentiation. Complete loss of CARM1 leads to disrupted differentiation and maturation of alveolar epithelial type II (ATII) cells. We thus hypothesized that CARM1 regulates the development and progression of emphysema. To address this, we investigated the contribution of CARM1 to alveolar rarefication using the mouse model of elastase-induced emphysema in vivo and small interfering (si)RNA-mediated knockdown in ATII-like LA4 cells in vitro. We demonstrate that emphysema progression in vivo is associated with a time-dependent down-regulation of CARM1. Importantly, elastase-treated CARM1 haploinsufficient mice show significantly increased airspace enlargement (52.5 ± 9.6 μm versus 38.8 ± 5.5 μm; P < 0.01) and lung compliance (2.8 ± 0.32 μl/cm H2O versus 2.4 ± 0.4 μl/cm H2O; P < 0.04) compared with controls. The knockdown of CARM1 in LA4 cells led to decreased sirtuin 1 expression (0.034 ± 0.003 versus 0.022 ± 0.001; P < 0.05) but increased expression of p16 (0.27 ± 0.013 versus 0.31 ± 0.010; P < 0.5) and p21 (0.81 ± 0.088 versus 1.28 ± 0.063; P < 0.01) and higher β-galactosidase-positive senescent cells (50.57 ± 7.36% versus 2.21 ± 0.34%; P < 0.001) compared with scrambled siRNA. We further demonstrated that CARM1 haploinsufficiency impairs transdifferentiation and wound healing (32.18 ± 0.9512% versus 8.769 ± 1.967%; P < 0.001) of alveolar epithelial cells. Overall, these results reveal a novel function of CARM1 in regulating emphysema development and premature lung aging via alveolar senescence as well as impaired regeneration, repair, and differentiation of ATII cells.
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Affiliation(s)
- Rim S J Sarker
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
| | - Gerrit John-Schuster
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
| | - Alexander Bohla
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
| | - Kathrin Mutze
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
| | - Gerald Burgstaller
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
| | - Mark T Bedford
- 2 Department of Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas; and
| | - Melanie Königshoff
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
| | - Oliver Eickelberg
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany.,3 University Hospital of the Ludwig-Maximilians-University, München, Germany
| | - Ali Ö Yildirim
- 1 Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research, Neuherberg, Germany
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13
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Krauss-Etschmann S, Dehmel S, Nathan P, Bartel S, Milger K, Yildirim AÖ, John G, Irmler M, Beckers J, Imhof A, Eickelberg O, Schaub B. Dysregulierte Wachstumshormone in der fetalen Lunge nach intrauteriner Zigarettenrauchexposition. Pneumologie 2016. [DOI: 10.1055/s-0036-1571989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Caniard A, Ballweg K, Lukas C, Yildirim AÖ, Eickelberg O, Meiners S. Proteasome function is not impaired in healthy aging of the lung. Aging (Albany NY) 2015; 7:776-792. [PMID: 26540298 PMCID: PMC4637206 DOI: 10.18632/aging.100820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 07/17/2015] [Accepted: 09/25/2015] [Indexed: 06/05/2023]
Abstract
Aging is the progressive loss of cellular function which inevitably leads to death. Failure of proteostasis including the decrease in proteasome function is one hallmark of aging. In the lung, proteasome activity was shown to be impaired in age-related diseases such as chronic obstructive pulmonary disease. However, little is known on proteasome function during healthy aging. Here, we comprehensively analyzed healthy lung aging and proteasome function in wildtype, proteasome reporter and immunoproteasome knockout mice. Wildtype mice spontaneously developed senile lung emphysema while expression and activity of proteasome complexes and turnover of ubiquitinated substrates was not grossly altered in lungs of aged mice. Immunoproteasome subunits were specifically upregulated in the aged lung and the caspase-like proteasome activity concomitantly decreased. Aged knockout mice for the LMP2 or LMP7 immunoproteasome subunits showed no alteration in proteasome activities but exhibited typical lung aging phenotypes suggesting that immunoproteasome function is dispensable for physiological lung aging in mice. Our results indicate that healthy aging of the lung does not involve impairment of proteasome function. Apparently, the reserve capacity of the proteostasis systems in the lung is sufficient to avoid severe proteostasis imbalance during healthy aging.
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Affiliation(s)
- Anne Caniard
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig‐Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Korbinian Ballweg
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig‐Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Christina Lukas
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig‐Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Ali Ö. Yildirim
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig‐Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Oliver Eickelberg
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig‐Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Silke Meiners
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig‐Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
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15
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Velroyen A, Yaroshenko A, Hahn D, Fehringer A, Tapfer A, Müller M, Noël PB, Pauwels B, Sasov A, Yildirim AÖ, Eickelberg O, Hellbach K, Auweter SD, Meinel FG, Reiser MF, Bech M, Pfeiffer F. Grating-based X-ray Dark-field Computed Tomography of Living Mice. EBioMedicine 2015; 2:1500-6. [PMID: 26629545 PMCID: PMC4634200 DOI: 10.1016/j.ebiom.2015.08.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [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: 06/11/2015] [Revised: 08/04/2015] [Accepted: 08/05/2015] [Indexed: 02/01/2023] Open
Abstract
Changes in x-ray attenuating tissue caused by lung disorders like emphysema or fibrosis are subtle and thus only resolved by high-resolution computed tomography (CT). The structural reorganization, however, is of strong influence for lung function. Dark-field CT (DFCT), based on small-angle scattering of x-rays, reveals such structural changes even at resolutions coarser than the pulmonary network and thus provides access to their anatomical distribution. In this proof-of-concept study we present x-ray in vivo DFCTs of lungs of a healthy, an emphysematous and a fibrotic mouse. The tomographies show excellent depiction of the distribution of structural – and thus indirectly functional – changes in lung parenchyma, on single-modality slices in dark field as well as on multimodal fusion images. Therefore, we anticipate numerous applications of DFCT in diagnostic lung imaging. We introduce a scatter-based Hounsfield Unit (sHU) scale to facilitate comparability of scans. In this newly defined sHU scale, the pathophysiological changes by emphysema and fibrosis cause a shift towards lower numbers, compared to healthy lung tissue. We present so far unreported x-ray scatter dark-field CT scans of living mice performed with a Talbot–Lau interferometer. Dark field gives access to structural information not provided by attenuation CT at scales below the detector pixel size. Changes of lung alveoli structure are clearly visualized by dark-field CT for emphysema and fibrosis.
Lung diseases pose one of the leading causes of death worldwide. They are often difficult to diagnose at an early stage due to low sensitivity of conventional medical imaging systems towards structural changes of the lung tissue. With dark-field imaging based on scattering of x-rays such structural changes can be visualized even at imaging system resolutions coarser than the lung alveoli, as opposed to conventional x-ray imaging based on attenuation. By overcoming experimental scan time and dose issues, we report the first dark-field computed tomography scans on living mice, demonstrating excellent depiction of the anatomical distribution of pathological lung changes.
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Affiliation(s)
- A Velroyen
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - A Yaroshenko
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - D Hahn
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - A Fehringer
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - A Tapfer
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - M Müller
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
| | - P B Noël
- Department of Radiology, Technische Universität München, Munich, Germany
| | | | - A Sasov
- Bruker microCT, Kontich, Belgium
| | - A Ö Yildirim
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München and Ludwig-Maximilians-University Hospital Munich, Munich, Germany ; German Center for Lung Research (DZL), Germany
| | - O Eickelberg
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München and Ludwig-Maximilians-University Hospital Munich, Munich, Germany ; German Center for Lung Research (DZL), Germany
| | - K Hellbach
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - S D Auweter
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - F G Meinel
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - M F Reiser
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany ; German Center for Lung Research (DZL), Germany
| | - M Bech
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany ; Medical Radiation Physics, Lund University, Lund, Sweden
| | - F Pfeiffer
- Lehrstuhl für Biomedizinische Physik, Physik-Department & Institut für Medizintechnik, Technische Universität München, Garching, Germany
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16
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Jia J, Conlon TM, Ballester Lopez C, Eickelberg O, Mall MA, Yildirim AÖ. Cigarette smoke exposure enhances obstructive bronchitis in ENaC overexpressing newborn-mice. Pneumologie 2015. [DOI: 10.1055/s-0035-1551906] [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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17
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Schamberger AC, Mise N, Jia J, Genoyer E, Yildirim AÖ, Meiners S, Eickelberg O. Cigarette smoke-induced disruption of bronchial epithelial tight junctions is prevented by transforming growth factor-β. Am J Respir Cell Mol Biol 2014; 50:1040-52. [PMID: 24358952 DOI: 10.1165/rcmb.2013-0090oc] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The airway epithelium constitutes an essential immunological and cytoprotective barrier to inhaled insults, such as cigarette smoke, environmental particles, or viruses. Although bronchial epithelial integrity is crucial for airway homeostasis, defective epithelial barrier function contributes to chronic obstructive pulmonary disease (COPD). Tight junctions at the apical side of epithelial cell-cell contacts determine epithelial permeability. Cigarette smoke exposure, the major risk factor for COPD, is suggested to impair tight junction integrity; however, detailed mechanisms thereof remain elusive. We investigated whether cigarette smoke extract (CSE) and transforming growth factor (TGF)-β1 affected tight junction integrity. Exposure of human bronchial epithelial cells (16HBE14o(-)) and differentiated primary human bronchial epithelial cells (pHBECs) to CSE significantly disrupted tight junction integrity and barrier function. Specifically, CSE decreased transepithelial electrical resistance (TEER) and tight junction-associated protein levels. Zonula occludens (ZO)-1 and ZO-2 protein levels were significantly reduced and dislocated from the cell membrane, as observed by fractionation and immunofluorescence analysis. These findings were reproduced in isolated bronchi exposed to CSE ex vivo, as detected by real-time quantitative reverse-transcriptase PCR and immunohistochemistry. Combined treatment of 16HBE14o(-) cells or pHBECs with CSE and TGF-β1 restored ZO-1 and ZO-2 levels. TGF-β1 cotreatment restored membrane localization of ZO-1 and ZO-2 protein and prevented CSE-mediated TEER decrease. In conclusion, CSE led to the disruption of tight junctions of human bronchial epithelial cells, and TGF-β1 counteracted this CSE-induced effect. Thus, TGF-β1 may serve as a protective factor for bronchial epithelial cell homeostasis in diseases such as COPD.
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Affiliation(s)
- Andrea C Schamberger
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, University Hospital, Ludwig-Maximilians-University and Helmholtz Zentrum München, Member of the German Center for Lung Research, Munich, Germany
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18
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Herr C, AlAlwani S, Yildirim AÖ, Beißwenger C, Bals R. The antimicrobial peptide cathelicidin is required for lung repair. Pneumologie 2014. [DOI: 10.1055/s-0033-1363113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Meinel FG, Schwab F, Yaroshenko A, Velroyen A, Bech M, Hellbach K, Fuchs J, Stiewe T, Yildirim AÖ, Bamberg F, Reiser MF, Pfeiffer F, Nikolaou K. Lung tumors on multimodal radiographs derived from grating-based X-ray imaging--a feasibility study. Phys Med 2013; 30:352-7. [PMID: 24316287 DOI: 10.1016/j.ejmp.2013.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 11/13/2013] [Accepted: 11/14/2013] [Indexed: 02/01/2023] Open
Abstract
PURPOSE The purpose of this study was to assess whether grating-based X-ray imaging may have a role in imaging of pulmonary nodules on radiographs. MATERIALS AND METHODS A mouse lung containing multiple lung tumors was imaged using a small-animal scanner with a conventional X-ray source and a grating interferometer for phase-contrast imaging. We qualitatively compared the signal characteristics of lung nodules on transmission, dark-field and phase-contrast images. Furthermore, we quantitatively compared signal characteristics of lung tumors and the adjacent lung tissue and calculated the corresponding contrast-to-noise ratios. RESULTS Of the 5 tumors visualized on the transmission image, 3/5 tumors were clearly visualized and 1 tumor was faintly visualized in the dark-field image as areas of decreased small angle scattering. In the phase-contrast images, 3/5 tumors were clearly visualized, while the remaining 2 tumors were faintly visualized by the phase-shift occurring at their edges. No additional tumors were visualized in either the dark-field or phase-contrast images. Compared to the adjacent lung tissue, lung tumors were characterized by a significant decrease in transmission signal (median 0.86 vs. 0.91, p = 0.04) and increase in dark-field signal (median 0.71 vs. 0.65, p = 0.04). Median contrast-to-noise ratios for the visualization of lung nodules were 4.4 for transmission images and 1.7 for dark-field images (p = 0.04). CONCLUSION Lung nodules can be visualized on all three radiograph modalities derived from grating-based X-ray imaging. However, our initial data suggest that grating-based multimodal X-ray imaging does not increase the sensitivity of chest radiographs for the detection of lung nodules.
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Affiliation(s)
- Felix G Meinel
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany.
| | - Felix Schwab
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany
| | - Andre Yaroshenko
- Department of Physics and Institute of Medical Engineering, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Astrid Velroyen
- Department of Physics and Institute of Medical Engineering, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Martin Bech
- Department of Physics and Institute of Medical Engineering, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany; Medical Radiation Physics, Lund University, 22185 Lund, Sweden
| | - Katharina Hellbach
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany
| | - Jeanette Fuchs
- Molecular Oncology Unit, Philipps-University Marburg, D-35032 Marburg, Germany
| | - Thorsten Stiewe
- Molecular Oncology Unit, Philipps-University Marburg, D-35032 Marburg, Germany
| | - Ali Ö Yildirim
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum Munich, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
| | - Fabian Bamberg
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany
| | - Maximilian F Reiser
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany
| | - Franz Pfeiffer
- Department of Physics and Institute of Medical Engineering, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Konstantin Nikolaou
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany
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Yaroshenko A, Meinel FG, Bech M, Tapfer A, Velroyen A, Schleede S, Auweter S, Bohla A, Yildirim AÖ, Nikolaou K, Bamberg F, Eickelberg O, Reiser MF, Pfeiffer F. Pulmonary Emphysema Diagnosis with a Preclinical Small-Animal X-ray Dark-Field Scatter-Contrast Scanner. Radiology 2013; 269:427-33. [DOI: 10.1148/radiol.13122413] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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John G, Kohse K, Orasche J, Zimmermann R, Schmid O, Eickelberg O, Yildirim AÖ. Die Zusammensetzung des Zigarettenrauches bestimmt die Rekrutierung inflammatorischer Zellen in die Maus-Lunge in COPD-Modellen. Pneumologie 2013. [DOI: 10.1055/s-0033-1345047] [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: 10/26/2022]
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Meinel FG, Schwab F, Schleede S, Bech M, Herzen J, Achterhold K, Auweter S, Bamberg F, Yildirim AÖ, Bohla A, Eickelberg O, Loewen R, Gifford M, Ruth R, Reiser MF, Pfeiffer F, Nikolaou K. Diagnosing and mapping pulmonary emphysema on X-ray projection images: incremental value of grating-based X-ray dark-field imaging. PLoS One 2013; 8:e59526. [PMID: 23555692 PMCID: PMC3608711 DOI: 10.1371/journal.pone.0059526] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [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: 10/25/2012] [Accepted: 02/15/2013] [Indexed: 02/01/2023] Open
Abstract
PURPOSE To assess whether grating-based X-ray dark-field imaging can increase the sensitivity of X-ray projection images in the diagnosis of pulmonary emphysema and allow for a more accurate assessment of emphysema distribution. MATERIALS AND METHODS Lungs from three mice with pulmonary emphysema and three healthy mice were imaged ex vivo using a laser-driven compact synchrotron X-ray source. Median signal intensities of transmission (T), dark-field (V) and a combined parameter (normalized scatter) were compared between emphysema and control group. To determine the diagnostic value of each parameter in differentiating between healthy and emphysematous lung tissue, a receiver-operating-characteristic (ROC) curve analysis was performed both on a per-pixel and a per-individual basis. Parametric maps of emphysema distribution were generated using transmission, dark-field and normalized scatter signal and correlated with histopathology. RESULTS Transmission values relative to water were higher for emphysematous lungs than for control lungs (1.11 vs. 1.06, p<0.001). There was no difference in median dark-field signal intensities between both groups (0.66 vs. 0.66). Median normalized scatter was significantly lower in the emphysematous lungs compared to controls (4.9 vs. 10.8, p<0.001), and was the best parameter for differentiation of healthy vs. emphysematous lung tissue. In a per-pixel analysis, the area under the ROC curve (AUC) for the normalized scatter value was significantly higher than for transmission (0.86 vs. 0.78, p<0.001) and dark-field value (0.86 vs. 0.52, p<0.001) alone. Normalized scatter showed very high sensitivity for a wide range of specificity values (94% sensitivity at 75% specificity). Using the normalized scatter signal to display the regional distribution of emphysema provides color-coded parametric maps, which show the best correlation with histopathology. CONCLUSION In a murine model, the complementary information provided by X-ray transmission and dark-field images adds incremental diagnostic value in detecting pulmonary emphysema and visualizing its regional distribution as compared to conventional X-ray projections.
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Affiliation(s)
- Felix G Meinel
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany.
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Schwab F, Schleede S, Hahn D, Bech M, Herzen J, Auweter S, Bamberg F, Achterhold K, Yildirim AÖ, Bohla A, Eickelberg O, Loewen R, Gifford M, Ruth R, Reiser MF, Nikolaou K, Pfeiffer F, Meinel FG. Comparison of contrast-to-noise ratios of transmission and dark-field signal in grating-based X-ray imaging for healthy murine lung tissue. Z Med Phys 2012; 23:236-42. [PMID: 23219282 DOI: 10.1016/j.zemedi.2012.11.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 08/31/2012] [Revised: 10/25/2012] [Accepted: 11/08/2012] [Indexed: 02/01/2023]
Abstract
PURPOSE An experimental comparison of the contrast-to-noise ratio (CNR) between transmission and dark-field signals in grating-based X-ray imaging for ex-vivo murine lung tissue. MATERIALS AND METHODS Lungs from three healthy mice were imaged ex vivo using a laser-driven compact synchrotron X-ray source. Background noise of transmission and dark-field signal was quantified by measuring the standard deviation in a region of interest (ROI) placed in a homogeneous area outside the specimen. Image contrast was quantified by measuring the signal range in rectangular ROIs placed in central and peripheral lung parenchyma. The relative contrast gain (RCG) of dark-field over transmission images was calculated as CNRDF / CNRT. RESULTS In all images, there was a trend for contrast-to-noise ratios of dark-field images (CNRDF) to be higher than for transmission images (CNRT) for all ROIs (median 61 vs. 38, p=0.10), but the difference was statistically significant only for peripheral ROIs (61 vs. 32, p=0.03). Median RCG was >1 for all ROIs (1.84). RCG values were significantly smaller for central ROIs than for peripheral ROIs (1.34 vs. 2.43, p=0.03). CONCLUSION The contrast-to-noise ratio of dark-field images compares more favorably to the contrast-to-noise ratio of transmission images for peripheral lung regions as compared to central regions. For any specific specimen, a calculation of the RCG allows comparing which X-ray modality (dark-field or transmission imaging) produces better contrast-to-noise characteristics in a well-defined ROI.
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Affiliation(s)
- Felix Schwab
- Institute for Clinical Radiology, Ludwig Maximilians-University Hospital Munich, Marchioninistr. 15, 81377 München, Germany.
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van Rijt SH, Keller IE, John G, Kohse K, Yildirim AÖ, Eickelberg O, Meiners S. Acute cigarette smoke exposure impairs proteasome function in the lung. Am J Physiol Lung Cell Mol Physiol 2012; 303:L814-23. [PMID: 22962013 DOI: 10.1152/ajplung.00128.2012] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Cigarette smoke mediates DNA damage, lipid peroxidation, and modification and misfolding of proteins, thereby inducing severe cellular damage. The ubiquitin proteasome system serves as the major disposal system for modified and misfolded proteins and is thus essential for proper cellular function. Its role in cigarette smoke-induced cell damage, however, is largely unknown. We hypothesized that the ubiquitin-proteasome system is involved in the degradation of cigarette smoke-damaged proteins and that cigarette smoke exposure impairs the proteasome itself. Here, we show that treatment of human alveolar epithelial cells with cigarette smoke extract (CSE) induced time- and dose-dependent cell death, a rise in intracellular reactive oxygen species, and increased levels of carbonylated and polyubiquitinated proteins. While high doses of CSE severely impaired all three proteasomal activities, low CSE concentrations significantly inhibited only the trypsin-like activity of the proteasome in alveolar and bronchial epithelial cells. Moreover, acute exposure of mice to cigarette smoke significantly impaired the trypsin-like activity by 25% in the lungs. Reduced proteasome activity was not due to transcriptional regulation of the proteasome. Notably, cigarette smoke exposure induced accumulation of polyubiquitinated proteins in the soluble and insoluble protein fraction of the lung. We show for the first time that acute exposure to cigarette smoke directly impairs proteasome activity in the lungs of mice and in human epithelial cells at low doses without affecting proteasome expression. Our results indicate that defective proteasomal protein quality control may exacerbate the detrimental effects of cigarette smoke in the lung.
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Affiliation(s)
- Sabine H van Rijt
- Comprehensive Pneumology Center, University Hospital, Ludwig-Maximilians-University, Munich, Germany
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Clauss M, Voswinckel R, Rajashekhar G, Sigua NL, Fehrenbach H, Rush NI, Schweitzer KS, Yildirim AÖ, Kamocki K, Fisher AJ, Gu Y, Safadi B, Nikam S, Hubbard WC, Tuder RM, Twigg HL, Presson RG, Sethi S, Petrache I. Lung endothelial monocyte-activating protein 2 is a mediator of cigarette smoke–induced emphysema in mice. J Clin Invest 2012. [DOI: 10.1172/jci64369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Kohse K, John G, Eickelberg O, Yildirim AÖ. Contribution of adaptive immune cells to COPD pathogenesis in a cigarette smoke induced mouse model. Pneumologie 2012. [DOI: 10.1055/s-0032-1315492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Vock C, Yildirim AÖ, Wegmann M, Fehrenbach H. Region-specific regulation of mucus production in allergic asthma is dependent on IL-13R alpha 1 expression. Pneumologie 2012. [DOI: 10.1055/s-0032-1315472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Bohla A, Kohse K, Schwarz J, John G, Amarie OV, Eickelberg O, Yildirim AÖ. Diverging Proliferative Behavior of Alveolar Epithelial Cells in Progressive Elastase-Induced Emphysema. Pneumologie 2012. [DOI: 10.1055/s-0032-1315495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kohse K, John G, Bohla A, Eickelberg O, Yildirim AÖ. Das zeitabhängige Auftreten von Th17 Zellen in einem Zigarettenrauch-induzierten COPD-Mausmodell. Pneumologie 2012. [DOI: 10.1055/s-0032-1309161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Vock C, Yildirim AÖ, Fehrenbach H, Wegmann M. Investigations on the IL-13 signalling along the airway tree-implications on mucus production in allergic asthma? Pneumologie 2011. [DOI: 10.1055/s-0031-1296154] [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: 10/14/2022]
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31
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Bohla A, Kohse K, Eickelberg O, Yildirim AÖ. Prolonged Development of Elastase-Induced Emphysema is Supported by Increased Apoptosis. Pneumologie 2011. [DOI: 10.1055/s-0031-1296099] [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: 10/14/2022]
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Ehlebracht C, Amarie OV, Prechtl C, Bohla A, Eickelberg O, Yildirim AÖ. Repetitive Lungenfunktionsmessung im Modell der Bleomycin-induzierten Lungenfibrose bei Mäusen. Pneumologie 2011. [DOI: 10.1055/s-0031-1296106] [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: 10/15/2022]
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Rim S, Jahan S, John G, Kohse K, Bohla A, Eickelberg O, Yildirim AÖ. Role of Bronchial Epithelial Cells in Pathogenesis of COPD. Pneumologie 2011. [DOI: 10.1055/s-0031-1296142] [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: 10/15/2022]
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34
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Kohse K, John G, Eickelberg O, Yildirim AÖ. Dynamics of inflammatory cell recruitment in a cigarette smoke induced COPD mouse model. Pneumologie 2011. [DOI: 10.1055/s-0031-1296117] [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: 10/15/2022]
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Hector A, Kormann MSD, Mack I, Latzin P, Casaulta C, Kieninger E, Zhou Z, Yildirim AÖ, Bohla A, Rieber N, Kappler M, Koller B, Eber E, Eickmeier O, Zielen S, Eickelberg O, Griese M, Mall MA, Hartl D. The chitinase-like protein YKL-40 modulates cystic fibrosis lung disease. PLoS One 2011; 6:e24399. [PMID: 21949714 PMCID: PMC3176766 DOI: 10.1371/journal.pone.0024399] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 08/08/2011] [Indexed: 02/07/2023] Open
Abstract
The chitinase-like protein YKL-40 was found to be increased in patients with severe asthma and chronic obstructive pulmonary disease (COPD), two disease conditions featuring neutrophilic infiltrates. Based on these studies and a previous report indicating that neutrophils secrete YKL-40, we hypothesized that YKL-40 plays a key role in cystic fibrosis (CF) lung disease, a prototypic neutrophilic disease. The aim of this study was (i) to analyze YKL-40 levels in human and murine CF lung disease and (ii) to investigate whether YKL-40 single-nucleotide polymorphisms (SNPs) modulate CF lung disease severity. YKL-40 protein levels were quantified in serum and sputum supernatants from CF patients and control individuals. Levels of the murine homologue BRP-39 were analyzed in airway fluids from CF-like βENaC-Tg mice. YKL-40SNPs were analyzed in CF patients. YKL-40 levels were increased in sputum supernatants and in serum from CF patients compared to healthy control individuals. Within CF patients, YKL-40 levels were higher in sputum than in serum. BRP-39 levels were increased in airways fluids from βENaC-Tg mice compared to wild-type littermates. In both CF patients and βENaC-Tg mice, YKL-40/BRP-39 airway levels correlated with the severity of pulmonary obstruction. Two YKL-40 SNPs (rs871799 and rs880633) were found to modulate age-adjusted lung function in CF patients. YKL-40/BRP-39 levelsare increased in human and murine CF airway fluids, correlate with pulmonary function and modulate CF lung disease severity genetically. These findings suggest YKL-40 as a potential biomarker in CF lung disease.
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Affiliation(s)
- Andreas Hector
- Department I, Children's Hospital, University of Tübingen, Tübingen, Germany
| | | | - Ines Mack
- Research Center, Children's Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Philipp Latzin
- Department of Paediatrics, University of Berne, Inselspital, Berne, Switzerland
| | - Carmen Casaulta
- Department of Paediatrics, University of Berne, Inselspital, Berne, Switzerland
| | - Elisabeth Kieninger
- Department of Paediatrics, University of Berne, Inselspital, Berne, Switzerland
| | - Zhe Zhou
- Division of Pediatric Pulmonology and Allergy and Cystic Fibrosis Center, Department of Pediatrics III, University of Heidelberg, Heidelberg, Germany
| | - Ali Ö. Yildirim
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease (iLBD), University Hospital, Ludwig Maximilians University and Helmholtz ZentrumMünchen, Munich, Germany
| | - Alexander Bohla
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease (iLBD), University Hospital, Ludwig Maximilians University and Helmholtz ZentrumMünchen, Munich, Germany
| | - Nikolaus Rieber
- Department I, Children's Hospital, University of Tübingen, Tübingen, Germany
| | - Matthias Kappler
- Research Center, Children's Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Barbara Koller
- Department of Dermatology and Allergy, Ludwig-Maximilians-University, Munich, Germany
| | - Ernst Eber
- Respiratory and Allergic Disease Division, Paediatric Department, Medical University of Graz, Graz, Austria
| | - Olaf Eickmeier
- Department of Pediatric Pulmonology, Allergy and Cystic Fibrosis, Children's Hospital, Frankfurt, Germany
| | - Stefan Zielen
- Department of Pediatric Pulmonology, Allergy and Cystic Fibrosis, Children's Hospital, Frankfurt, Germany
| | - Oliver Eickelberg
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease (iLBD), University Hospital, Ludwig Maximilians University and Helmholtz ZentrumMünchen, Munich, Germany
| | - Matthias Griese
- Research Center, Children's Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Marcus A. Mall
- Division of Pediatric Pulmonology and Allergy and Cystic Fibrosis Center, Department of Pediatrics III, University of Heidelberg, Heidelberg, Germany
- Translational Lung Research Center, University of Heidelberg, Heidelberg, Germany
| | - Dominik Hartl
- Department I, Children's Hospital, University of Tübingen, Tübingen, Germany
- * E-mail:
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Brand S, Teich R, Dicke T, Harb H, Yildirim AÖ, Tost J, Schneider-Stock R, Waterland RA, Bauer UM, von Mutius E, Garn H, Pfefferle PI, Renz H. Epigenetic regulation in murine offspring as a novel mechanism for transmaternal asthma protection induced by microbes. J Allergy Clin Immunol 2011; 128:618-25.e1-7. [PMID: 21680015 DOI: 10.1016/j.jaci.2011.04.035] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 04/19/2011] [Accepted: 04/22/2011] [Indexed: 11/20/2022]
Abstract
BACKGROUND Bronchial asthma is a chronic inflammatory disease resulting from complex gene-environment interactions. Natural microbial exposure has been identified as an important environmental condition that provides asthma protection in a prenatal window of opportunity. Epigenetic regulation is an important mechanism by which environmental factors might interact with genes involved in allergy and asthma development. OBJECTIVE This study was designed to test whether epigenetic mechanisms might contribute to asthma protection conferred by early microbial exposure. METHODS Pregnant maternal mice were exposed to the farm-derived gram-negative bacterium Acinetobacter lwoffii F78. Epigenetic modifications in the offspring were analyzed in T(H)1- and T(H)2-relevant genes of CD4(+) T cells. RESULTS Prenatal administration of A lwoffii F78 prevented the development of an asthmatic phenotype in the progeny, and this effect was IFN-γ dependent. Furthermore, the IFNG promoter of CD4(+) T cells in the offspring revealed a significant protection against loss of histone 4 (H4) acetylation, which was closely associated with IFN-γ expression. Pharmacologic inhibition of H4 acetylation in the offspring abolished the asthma-protective phenotype. Regarding T(H)2-relevant genes only at the IL4 promoter, a decrease could be detected for H4 acetylation but not at the IL5 promoter or the intergenic T(H)2 regulatory region conserved noncoding sequence 1 (CNS1). CONCLUSION These data support the hygiene concept and indicate that microbes operate by means of epigenetic mechanisms. This provides a new mechanism in the understanding of gene-environment interactions in the context of allergy protection.
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Affiliation(s)
- Stephanie Brand
- Department of Clinical Chemistry and Molecular Diagnostics, Philipps University of Marburg, Marburg, Germany
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Clauss M, Voswinckel R, Rajashekhar G, Sigua NL, Fehrenbach H, Rush NI, Schweitzer KS, Yildirim AÖ, Kamocki K, Fisher AJ, Gu Y, Safadi B, Nikam S, Hubbard WC, Tuder RM, Twigg HL, Presson RG, Sethi S, Petrache I. Lung endothelial monocyte-activating protein 2 is a mediator of cigarette smoke-induced emphysema in mice. J Clin Invest 2011; 121:2470-9. [PMID: 21576822 DOI: 10.1172/jci43881] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Accepted: 03/30/2011] [Indexed: 01/21/2023] Open
Abstract
Pulmonary emphysema is a disease characterized by alveolar cellular loss and inflammation. Recently, excessive apoptosis of structural alveolar cells has emerged as a major mechanism in the development of emphysema. Here, we investigated the proapoptotic and monocyte chemoattractant cytokine endothelial monocyte-activating protein 2 (EMAPII). Lung-specific overexpression of EMAPII in mice caused simplification of alveolar structures, apoptosis, and macrophage accumulation, compared with that in control transgenic mice. Additionally, in a mouse model of cigarette smoke-induced (CS-induced) emphysema, EMAPII levels were significantly increased in murine lungs. This upregulation was necessary for emphysema development, as neutralizing antibodies to EMAPII resulted in reduced alveolar cell apoptosis, inflammation, and emphysema-associated structural changes in alveoli and small airways and improved lung function. The mechanism of EMAPII upregulation involved an apoptosis-dependent feed-forward loop, since caspase-3 instillation in the lung markedly increased EMAPII expression, while caspase inhibition decreased its production, even in transgenic EMAPII mice. These findings may have clinical significance, as both current smokers and ex-smoker chronic obstructive pulmonary disease (COPD) patients had increased levels of secreted EMAPII in the bronchoalveolar lavage fluid compared with that of nonsmokers. In conclusion, we suggest that EMAPII perpetuates the mechanism of CS-induced lung emphysema in mice and, given its secretory nature, is a suitable target for neutralization antibody therapy.
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Affiliation(s)
- Matthias Clauss
- Indiana Center for Vascular Biology and Medicine and Department of Cellular and Integrative Physiology, Indiana University, Indianapolis, Indiana 46202, USA
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Baru AM, Hartl A, Lahl K, Krishnaswamy JK, Fehrenbach H, Yildirim AÖ, Garn H, Renz H, Behrens GMN, Sparwasser T. Correction: Selective depletion of Foxp3+ Treg during sensitization phase aggravates experimental allergic airway inflammation. Eur J Immunol 2010. [DOI: 10.1002/eji.201090050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Takenaka S, Königshoff M, Yildirim AÖ, Eickelberg O. Characterization of vascular remodelling in experimental emphysema. Pneumologie 2010. [DOI: 10.1055/s-0029-1247955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Yildirim AÖ, Muyal V, John G, Müller B, Seifart C, Kasper M, Fehrenbach H. Keratinocyte Growth Factor induces alveolisation in emphysematous mouse lungs via TGFβ-1. Pneumologie 2010. [DOI: 10.1055/s-0029-1247961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zakharkina T, Herr C, Yildirim AÖ, Friedrich M, Bals R. T-RFLP – a representative tool to study pulmonary microbial communities. Pneumologie 2009. [DOI: 10.1055/s-0029-1202419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yildirim AÖ, Veith M, Van Winkle L, Plopper C, Fehrenbach H. Molekulare Mechanismen des Schutzes vor einer Naphthalin-induzierten Schädigung des Atemwegepithels der Maus durch Keratinocyte Growth Factor in vivo. Pneumologie 2007. [DOI: 10.1055/s-2007-973132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Plagens A, Muyal J, Yildirim AÖ, Seifart C, Fehrenbach H. Modulation der Surfactantproteine A und D durch die Gabe von ATRA beim elastase-induzierten Lungenemphysem der Ratte. Pneumologie 2007. [DOI: 10.1055/s-2007-967235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yildirim AÖ, Wegmann M, Garn H, Renz H, Fehrenbach H. Mikrodissektion der Atemwege der Maus zur Identifizierung regions-spezifischer Genexpression beim akuten allergischen Asthmamodell. Pneumologie 2007. [DOI: 10.1055/s-2007-967223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yildirim AÖ, Seay U, Büchner N, Klepetko W, Voswinkel R, Seeger W, Eickelberg O. Protein Arginine Methyltransferasen (PRMT) in idiopathischer Lungenfibrose. Pneumologie 2005. [DOI: 10.1055/s-2005-864246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hassan AA, Abdulmawjood A, Yildirim AÖ, Fink K, Lämmler C, Schlenstedt R. Identification of streptococci isolated from various sources by determination ofcfbgene and other CAMP-factor genes. Can J Microbiol 2000. [DOI: 10.1139/w00-078] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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
In the present study, the CAMP-factor (cfb) gene of streptococci of serological group B (Streptococcus agalactiae) and the CAMP-factor (cfu) gene of S. uberis could be amplified by polymerase chain reaction. A cfb specific amplicon could be observed for all 128 phenotypically CAMP-positive S. agalactiae, for the phenotypically CAMP-negative S. agalactiae strain 74-360, and for 2 S. difficile reference strains. A cfu specific amplicon could be observed for all 7 phenotypically CAMP-positive S. uberis. Four S. agalactiae strains isolated from 4 cows with mastitis appeared to be phenotypically CAMP-negative and negative in the cfb gene PCR. The CAMP-positive and CAMP-negative isolates, including both S. difficile, could be identified as S. agalactiae by amplification of a S. agalactiae specific part of the V2 region of the 16S rRNA and a species-specific part of the 16S-23S rRNA intergenic spacer region. Amplification of an internal fragment of the cfb gene with a reduced annealing temperature yielded positive reactions not only for CAMP-positive S. agalactiae, but also for phenotypically CAMP-positive S. pyogenes (n = 4), S. canis (n = 28), and S. uberis (n = 7), indicating a close relation of the CAMP genes of these 4 species. The relation could be further demonstrated by sequencing the internal fragment of the CAMP-factor (cfg) gene of S. canis and comparing the sequence with those of S. agalactiae, S. pyogenes, and S. uberis.Key words: CAMP factor, cfb, cfu, S. canis.
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Hassan AA, Abdulmawjood A, Yildirim AÖ, Fink K, Lämmler C, Schlenstedt R. Identification of streptococci isolated from various sources by determination of cfb gene and other CAMP-factor genes. Can J Microbiol 2000. [DOI: 10.1139/cjm-46-10-946] [Citation(s) in RCA: 7] [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: 11/22/2022]
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