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Cramer N, Nawrot ML, Wege L, Fischer S, Sommer C, Danov O, Wronski S, Braun A, Munder A, Tümmler B. P150 Competitive fitness experiments of cystic fibrosis isolates of Pseudomonas aeruginosa in human and murine precision-cut lung slices. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01176-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rodríguez-González C, Rafiei Hashtchin A, Merkert S, Munder A, Lachmann N. P035 iPSC-derived macrophages from cystic fibrosis patients as a cell source to establish in vitro infection models and a drug screening platform. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01062-6] [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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Rodriguez Gonzalez C, Tschritter D, Brinkert K, Brauer M, Meinshausen C, Ackermann M, Nietert M, Lachmann N, Tümmler B, Munder A. P036 Analysis of the dysfunction of cystic fibrosis macrophages. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01063-8] [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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Neuhaus M, Munder A, Schipke J, Schmiedl A. Lung infection caused by Pseudomonas aeruginosa in a CD26/DPP4 deficient F344 rat model. Inflamm Res 2019; 68:529-544. [PMID: 31089745 PMCID: PMC7079754 DOI: 10.1007/s00011-019-01236-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 03/27/2019] [Accepted: 04/16/2019] [Indexed: 01/21/2023] Open
Abstract
Background Pseudomonas aeruginosa (PA) is the most important opportunistic pathogen in causing nosocomial infections and, furthermore, poses a permanent threat for severe chronic infections in patients with cystic fibrosis or COPD. The transmembrane protein CD26 with dipeptidyl peptidase-4 (DPP4) activity shows an increased expression in inflamed tissue. We tested whether CD26/DPP4 deficiency leads to reduced inflammation and decreased structural damage when infected with PA. Methods CD26/DPP4+ and CD26/DPP4− rats were instilled intratracheally with NaCl (controls) or with PA. Six hours later, bacterial distribution was detected with the in vivo imaging system 200 (IVIS). Lungs were then processed for molecular biology, light and electron microscopy and analyzed qualitatively, quantitatively and stereologically. Bacterial numbers were determined in homogenized lungs. Results Compared to saline treated controls, in both infected groups (1) the acinar airspace was significantly increased, (2) the volume density of the alveolar epithelium was significantly decreased, (3) the septal thickness was significantly reduced, (4) more than 40% of the alveolar epithelial surface was damaged, and up to 36% of the epithelial surface was covered with edema. In infected CD26− rats, the increase in lung weight was significantly less pronounced, the portion of edematous alveolar airspace was significantly lower and the part of edema interspersed with PA was decreased significantly. Conclusions CD26/DPP4 deficiency resulted in reduced pulmonary edema under sublethal PA infection, implicating a role for CD26 in infection progression. The partly pronounced structural damage may mask further possible influences of CD26 on the inflammatory response.
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Affiliation(s)
- M Neuhaus
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.,Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - A Munder
- Clinic of Pediatric Pneumology, Allergology and Neonatology Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - J Schipke
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - A Schmiedl
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany. .,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany. .,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany.
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Munder A, Hedtfeld S, Happle C, Lachmann N, Gastmeier R, Schambach A, Hansen G, Tümmler B. Stem cell transplantation in a cystic fibrosis mouse model induced Cftr genotype conversion and improved outcome of P. aeruginosa lung infection. Pneumologie 2016. [DOI: 10.1055/s-0036-1584631] [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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Hedtfeld S, Pratap Singh Sandhu S, Stanke F, Tümmler B, Munder A. Hematopoetic Stem Cell Transplantation and Genotyping in Cystic Fibrosis Mouse Model. Pneumologie 2015. [DOI: 10.1055/s-0035-1556603] [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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Munder A, Hartwig C, Schirmer B, Stelzer T, Tümmler B, Seifert R. The effector protein ExoY secreted by Pseudomonas aeruginosa augments the inflammatory reaction in the respiratory tract of mice. Pneumologie 2014. [DOI: 10.1055/s-0034-1376788] [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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Chillappagari SP, Venkatesan S, Garapati V, Mahavadi P, Munder A, Seubert A, Guenther A, Schmeck B, Tümmler B, Henke M. Downregulation of Hemeoxygenase-1 and Altered Cellular Homeostasis in Cystic Fibrosis. Pneumologie 2014. [DOI: 10.1055/s-0034-1376792] [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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Munder A, Struß R, Schambach A, Tümmler B. Rescue of function in a cystic fibrosis mouse model by transfer of hematopoetic stem cells. Pneumologie 2014. [DOI: 10.1055/s-0034-1376787] [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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Munder A, Wölbeling F, Baumann U, Gulbins E, Tümmler B. Die Applikationsroute spielt eine entscheidende Rolle für den Verlauf einer Pseudomonas aeruginosa Atemwegsinfektion in Mausmodellen der Cystischen Fibrose. Pneumologie 2013. [DOI: 10.1055/s-0033-1343968] [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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Dethlefsen S, Munder A, Bezuidt O, Fischer S, Hilker R, Klockgether J, Voigt B, Wiölbeling F, Hecker M, Goesmann A, Gulbins E, Tümmler B. WS22.6 The Pseudomonas aeruginosa pangenome: Impact of genomic diversity on bacterial pathogenicity and host response in airway infections. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60143-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kumar A, Munder A, Aravind R, Eapen SJ, Tümmler B, Raaijmakers JM. Friend or foe: genetic and functional characterization of plant endophytic Pseudomonas aeruginosa. Environ Microbiol 2012; 15:764-79. [PMID: 23171326 DOI: 10.1111/1462-2920.12031] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 10/16/2012] [Accepted: 10/19/2012] [Indexed: 01/02/2023]
Abstract
Endophytic Pseudomonas aeruginosa strain BP35 was originally isolated from black pepper grown in the rain forest in Kerala, India. Strain PaBP35 was shown to provide significant protection to black pepper against infections by Phytophthora capsici and Radopholus similis. For registration and implementation in disease management programmes, several traits of PaBP35 were investigated including its endophytic behaviour, biocontrol activity, phylogeny and toxicity to mammals. The results showed that PaBP35 efficiently colonized black pepper shoots and displayed a typical spatiotemporal pattern in its endophytic movement with concomitant suppression of Phytophthora rot. Confocal laser scanning microscopy revealed high populations of PaBP35::gfp2 inside tomato plantlets, supporting its endophytic behaviour in other plant species. Polyphasic approaches to genotype PaBP35, including BOX-PCR, recN sequence analysis, multilocus sequence typing and comparative genome hybridization analysis, revealed its uniqueness among P. aeruginosa strains representing clinical habitats. However, like other P. aeruginosa strains, PaBP35 exhibited resistance to antibiotics, grew at 25-41°C and produced rhamnolipids and phenazines. PaBP35 displayed strong type II secretion effectors-mediated cytotoxicity on mammalian A549 cells. Coupled with pathogenicity in a murine airway infection model, we conclude that this plant endophytic strain is as virulent as clinical P. aeruginosa strains. Safety issues related to the selection of plant endophytic bacteria for crop protection are discussed.
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Affiliation(s)
- A Kumar
- Laboratory of Phytopathology, Wageningen University, Wageningen, The Netherlands.
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Neuhaus M, Munder A, Tschernig T, Hörsten SV, Ochs M, Schmiedl A. Einfluss einer CD26-Defizienz auf die Lungeninfektion mit Pseudomonas Aeruginosa in einem F344 Rattenmodell. Pneumologie 2011. [DOI: 10.1055/s-0031-1296130] [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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Munder A, Wölbeling F, Baumann U, Gulbins E, Tümmler B. Die Applikationsroute spielt eine entscheidende Rolle für den Verlauf einer Pseudomonas aeruginosa Atemwegsinfektion im Mausmodell der Cystischen Fibrose. Pneumologie 2011. [DOI: 10.1055/s-0031-1296128] [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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Munder A, Wölbeling F, Baumann U, Gulbins E, Tümmler B. 58 Route of application plays a distinct role for the outcome of a Pseudomonas aeruginosa airway infection in cystic fibrosis mouse models. J Cyst Fibros 2011. [DOI: 10.1016/s1569-1993(11)60077-5] [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: 10/18/2022]
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Munder A, Kerber-Momot T, Wölbeling F, Baumann U, Tümmler B, Tschernig T. Lokale Behandlung der pulmonalen Pseudomonas aeruginosa Infektion im Mausmodell- Blockade von bakteriellen Lektinen durch Saccharide und Hyaluronsäure. Pneumologie 2011. [DOI: 10.1055/s-0031-1272168] [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: 10/18/2022]
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Kerber-Momot T, Munder A, Schmiedl A, Leemhuis D, Herden A, Ochs M. MK2-/--Mäuse zeigen eine beeinträchtigte Immunantwort nach einer Infektion mit virulenten Pseudomonas aeruginosa in der Lunge. Pneumologie 2011. [DOI: 10.1055/s-0031-1272013] [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: 10/18/2022]
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Rakhimova E, Munder A, Wiehlmann L, Sethi S, Murphy T, Tümmler B. Population structure of Pseudomonas aeruginosa in CF and COPD. Pneumologie 2010. [DOI: 10.1055/s-0030-1251330] [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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Wölbeling F, Munder A, Kerber-Momot T, Baumann U, Tümmler B. Spirometric assessment of bacterial lung infections in mice. Pneumologie 2010. [DOI: 10.1055/s-0030-1251389] [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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Kerber-Momot T, Leemhuis D, Lührmann A, Munder A, Schmiedl A, Tschernig T, Pabst R. Einfluss eines TLR2/6 Agonisten auf die Immunreaktionen der Lunge nach Infektion mit Pseudomonas aeruginosa im Infektionsmodell der Ratte. Pneumologie 2010. [DOI: 10.1055/s-0030-1251132] [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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Rakhimova E, Wiehlmann L, Munder A, Sethi S, Murphy T, Tümmler B. Populationsstruktur von Pseudomonas aeruginosa bei CF und COPD. Pneumologie 2010. [DOI: 10.1055/s-0029-1247943] [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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Munder A, Kerber-Momot T, Wölbeling F, Tschernig T, Tümmler B. Umfassende Charakterisierung eines virulenten P. aeruginosa Stammes in einem akuten murinen Atemwegsinfektionsmodell. Pneumologie 2010. [DOI: 10.1055/s-0029-1247939] [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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Munder A, Adams T, Eberl L, Huber B, Juhas M, Klockgether J, Limpert AS, Riedel K, Salunkhe P, Wiehlmann L, Tümmler B. Charakterisierung von Virulenzdeterminanten von Pseudomonas aeruginosa für die Bedeutung der Kolonisation, Invasion und Persistenz des Erregers im Respirationstrakt. Pneumologie 2006. [DOI: 10.1055/s-2005-925503] [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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Munder A, Krusch S, Tschernig T, Dorsch M, Lührmann A, van Griensven M, Tümmler B, Weiss S, Hedrich HJ. Pulmonary microbial infection in mice: comparison of different application methods and correlation of bacterial numbers and histopathology. Exp Toxicol Pathol 2002; 54:127-33. [PMID: 12211633 DOI: 10.1078/0940-2993-00240] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Many investigations have been performed in characterising experimental bacterial infections in the lung of mice using several pathogens. Robust experimental pulmonary infection models require a reproducible method of application with defined numbers of pathogens to the respiratory tract without contaminating extrapulmonary tissues. At the same time trauma due to the experimental procedure should be kept to a minimum. So far several routes of administration have been used but a systematic comparison of these methods is still missing. Here we provide a comprehensive evaluation of view controlled i.t. instillation, tracheotomy, intranasal application, blind instillation and aerosol infection. An infection dose of up to 5 x 10(4) bacteria (L. monocytogenes) was applied to a group of ten mice by each technique and the animals were killed after 1 h or 24h. The number of viable bacteria was estimated by plating homogenates of the lungs and spleens. In addition, pathological effects on lung tissue were examined by histology 24h after infection. The highest reproducibility was achieved after applying Listeria directly in the trachea under view or by tracheotomy. However, mice were severely affected in their vitality after tracheotomy. Thus, for topical application of bacterial suspension into the lung the view controlled i.t. instillation is most appropriate.
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Affiliation(s)
- A Munder
- Institute for Laboratory Animal, Medical School of Hannover, Germany.
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Munder A, Chesler SN. Enhancement of sensitivity in capillary supercritical fluid chromatography through optimization of injection and detection techniques. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/jhrc.1240121008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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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Munder A, Buchert H, Niemczyk R, Swerev M, Ballschmiter K. Determination of PCDD/PCDF in motor oil and air particulates. A modular approach in clean-up. ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf00488661] [Citation(s) in RCA: 11] [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: 11/27/2022]
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Ballschmiter K, Buchert H, Class T, Krämer W, Magg H, Munder A, Reuter U, Schäfer W, Swerev M, Wittlinger R, Zoller W. Isomerenspezifische Bestimmung der Polychlordibenzodioxine (PCDD) und Polychlordibenzofurane (PCDF). ACTA ACUST UNITED AC 1985. [DOI: 10.1007/bf00497177] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [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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