Forschung

https://doi.org/10.1371/journal.pone.0198100

Hopster, T. D. Ambrisko, J. Stahl, S. B. R. Kästner (2017) Influence of catecholamines at different dosages on the function of the LiDCO sensor in isoflurane anaesthetized horses. Vet Emerg Crit Care, 27(6), pp 651-657.

K. Hopster, T. D. Ambrisko, J. Stahl, J. P. Schramel, S. B. R. Kästner (2015) Influence of xylazine on the function of the LiDCO sensor in isoflurane anaesthetized horses. Vet. Anaesth. Analg. 42 (2): 142-149.

Dr T. Ambrisko, Veterinärmedizinische Universität Wien

Im Rahmen des Projekts TopSpace wurden von 2014 bis 2017 Schweinswalerfassungen der deutschen Nord und Ostsee durchgeführt. Dabei konnte die in den Vorjahren beobachteten Verteilungsmuster bestätigt werden, die Zahl an Schweinswalen wurde in den Sommermonaten auf durchschnittlich 35.000 Tieren geschätzt. Die FFH Gebiete Sylter Aussenriff und Borkum Riffgrund erwiesen sich auch während dieses Projekts als Kerngebiete der Schweinswale und bleiben die einzigen Gebiete in der deutschen Nordsee, in denen wir seit Jahren regelmößig eine überdurchschnittlich hohe Zahl von Mutter Kalb Paaren beobachten können. In der Ostsee rechnen wir im Sommer mit etwa 3.000 Tieren, vor allem das Gebiet um Fehmarn zeichnet sich durch Mutter Kalb Sichtungen und überdurchschnittlich hohe Dichten aus. Die Daten zum Monitoring finden sich neuerdings als interaktive Karte in visuell ansprechender Weise unter https://geodienste.bfn.de/schweinswalmonitoring?lang=en aufbereitet.

Gilles, A., S. Viquerat, E. A. Becker, et al. 2016. Seasonal habitat-based density models for a marine top predator, the harbor porpoise, in a dynamic environment. Ecosphere 7:e01367.

https://geodienste.bfn.de/schweinswalmonitoring?lang=en

CAU

https://elib.tiho-hannover.de/receive/etd_mods_00000381?q=schwennen

Erzeugergemeinschaft für Qualitätsferkel - EGF Osnabrück eG

Overall this project was very successful: Within the project, we have generated knowledge, technologies and products, which will considerably contribute to the progressive control of CBPP.

Knowledge

Until now, very few virulence factors have been described for Mycoplasma mycoides, which lack the typical toxins and secretion systems of many other bacteria. Here, we provide evidence that the galactofuranose containing galactan, the polysaccharide coating of Mycoplasma mycoides subsp. capri and mycoides, indeed is a virulence factor. This information supports the further development of a polysaccharide conjugated vaccine.

Data generated within this project also supports the so far anecdotal evidence that CBPP infections indeed lead to lifelong immunity, at least for up to a year as we tested here. This shows that it will be possible to generate longer lasting immunity through improved future vaccines than the short lived immunity generated by the currently available vaccines.

We also show, through three different approaches (Precision Cut Lung Slice (PCLS) model system, in vivo immunosuppression trial as well as the in vitro cell assays, activities 1.2, 5.2 to 5.5, resp.) that the host may react to the pathogen in a counterproductive way, which leads to the hypothesis that severe and sometimes fatal outcome of CBPP is partly due to a misdirected host immune response.

Technologies

During the project, in vitro assays allowing the study of the interaction of mycoplasma with lung epithelial cells, macrophages and dendritic cells have been established.

A multiplex qPCR for the simultaneous detection of bovine cells and mycoplasmas of the Mycoplasma mycoides cluster was developed, allowing the quantification of both host and pathogen within one system.

An in vitro infection model using Precision cut lung slices (PCLS) was established to study host-pathogen interactions, bacterial adhesion, cell tropism, host specificity and cytotoxicity for Mmm and Mmc.

First steps to improve the CBPP challenge model have been initiated within this project, where repeated intranasal spraying of the infectious material replaced endotracheal intubation. This model needs further improvement, and the need for a robust challenge model has now been taken to a new level, with discussions including major international CBPP researchers.

Products

Last but not least, two products came out as a result of this project.

Through a consortium led by VIDO-InterVac and KALRO, a prototype subunit vaccine including proteins identified by ILRI resulted in filing a patent in North America for a CBPP vaccine.

A point-of-care lateral flow assay diagnostic tool has been developed, and a collaboration with a private sector company has been established to produce our previously developed cocktail ELISA.

Publications:

Gourgues G, Barré A, Beaudoing E, Weber J, Magdelenat G, Barbe V, Schieck E, Jores J, Vashee S, Blanchard A, Lartigue C, Sirand-Pugnet P. 2016. Complete Genome Sequence of Mycoplasma mycoides subsp. mycoides T1/44, a Vaccine Strain against Contagious Bovine Pleuropneumonia. Genome Announc. 2016 Apr 14;4(2). pii: e00263-16. doi: 10.1128/genomeA.00263-16.

Weldearegay YB, Pich A, Schieck E, Liljander A, Gicheru N, Wesonga H, Thiaucourt F, Kiirika LM, Valentin-Weigand P, Jores J, Meens J. 2016. Proteomic characterization of pleural effusion, a specific host niche of Mycoplasma mycoides subsp. mycoides from cattle with contagious bovine pleuropneumonia (CBPP).J Proteomics. 2016 Jan 10;131:93-103. doi: 10.1016/j.jprot.2015.10.016.

Liljander A, Yu M, O'Brien E, Heller M, Nepper JF, Weibel DB, Gluecks I, Younan M, Frey J, Falquet L, Jores J. 2015. A field-applicable recombinase polymerase amplification assay for rapid detection of Mycoplasma capricolum subsp. capripneumoniae. J Clin Microbiol 53:2810-2815. doi: 10.1128/JCM.00623-15. Epub 2015 Jun 17.

Seersholm FV, Fischer A, Heller M, Jores J, Sachse K, Mourier T, Hansen AJ. 2015. Draft Genome Sequence of the First Human Isolate of the Ruminant Pathogen Mycoplasma capricolum subsp. capricolum. Genome Announc 3:e00583-00515. doi: 10.1128/genomeA.00583-15.

Schieck E, Lartigue C, Frey J, Vozza N, Hegermann J, Miller RA, Valguarnera E, Muriuki C, Meens J, Nene V, Naessens J, Weber J, Lowary TL, Vashee S, Feldman MF, Jores J. 2016. Galactofuranose in Mycoplasma mycoides is important for membrane integrity and conceals adhesins but does not contribute to serum resistance. Mol Microbiol 99:55-70. doi: 10.1111/mmi.13213. Epub 2015 Oct 14.

Sterner-Kock A, Haider W, Sacchini F, Liljander A, Meens J, Poole J, Guschlbauer M, Heller M, Naessens J, Jores J. 2016. Morphological characterization and immunohistochemical detection of the proinflammatory cytokines IL-1beta, IL-17A, and TNF-alpha in lung lesions associated with contagious bovine pleuropneumonia. Trop Anim Health Prod 48:569-576. doi: 10.1007/s11250-016-0994-9. Epub 2016 Feb 2.

Nkando I, Perez-Casal J, Mwirigi M, Prysliak T, Townsend H, Berberov E, Kuria J, Mugambi J, Soi R, Liljander A, Jores J, Gerdts V, Potter A, Naessens J, Wesonga H. 2016. Recombinant Mycoplasma mycoides proteins elicit protective immune responses against contagious bovine pleuropneumonia. Vet Immunol Immunopathol 171:103-114. doi: 10.1016/j.vetimm.2016.02.010. Epub 2016 Feb 23.

Heller M, Gicheru N, Tjipura-Zaire G, Muriuki C, Yu M, Botelho A, Naessens J, Jores J, Liljander A. 2016. Development of a Novel Cocktail Enzyme-Linked Immunosorbent Assay and a Field-Applicable Lateral-Flow Rapid Test for Diagnosis of Contagious Bovine Pleuropneumonia. J Clin Microbiol. 2016 Jun;54(6):1557-65. doi: 10.1128/JCM.03259-15.

Perez-Casal J, Prysliak T, Maina T, Wang Y, Townsend H, Berverov E, Nkando I, Wesonga H, Liljander A, Jores J, Naessens J, Gerdts V, Potter A. 2015. Analysis of immune responses to recombinant proteins from strains of Mycoplasma mycoides subsp. mycoides, the causative agent of contagious bovine pleuropneumonia. Vet Immunol Immunopathol. 2015 Nov 15;168(1-2):103-10. doi: 10.1016/j.vetimm.2015.08.013. Epub 2015 Sep 9.

Heller M, Schwarz R, Noe G, Jores J, Fischer A, Schubert E, Sachse K. 2015. First human case of severe septicaemia associated with Mycoplasma capricolum subsp. capricolum infection. JMM Case Reports DOI: 10.1099/jmmcr.0.000101.

ILRI, Nairobi (Kenia)

FLI Insel Riems

https://doi.org/10.1371/journal.pone.0238660

https://www.tandfonline.com/doi/full/10.1080/03079457.2017.1408895

https://www.tandfonline.com/doi/full/10.1080/03079457.2019.1660305

Ripac-Labor GmbH, Potsdam

Institut für Chemie und Physikalische Chemie, Universität Potsdam

Heidemark Mästerkreis GmbH & Co KG, Haldensleben

SMB Services in Molecular Biology GmbH, Rüdersdorf

http://orgprints.org/32364/1/32364_12NA042_TiHo_Hannover_Kemper_2017_MuKuGreen.pdf

Hochschule Osnabrück