<abstract xmlns="http://www.w3.org/1999/xhtml"><bold>Introduction:</bold> The aim of this study was to determine the predisposing effect of bovine respiratory syncytial virus (BRSV) on <italic>Pasteurella</italic> spp. infection in naturally-induced pneumonia in cattle by immunohistochemical labelling.<bold>Material and Methods:</bold> Lungs of cattle slaughtered in the slaughterhouse were examined macroscopically, and 100 pneumonic samples were taken. The samples were fixed in 10% neutral formalin and embedded in paraffin by routine methods. Sections 5 μm in thickness were cut. The streptavidin-peroxidase method (ABC) was used to stain the sections for immuno-histochemical examination.<bold>Results:</bold> BRSV antigens were found in the cytoplasm of epithelial cells of bronchi, bronchioles, and alveoles and within inflammatory cell debris and inflammatory exudate in bronchial lumens. <italic>Pasteurella</italic> spp. antigens were detected in the cytoplasm of the epithelial cells of bronchi and bronchioles, and in cells in the lumens of bronchi and bronchioles. Eleven cases were positive for only one pathogen (six for BRSV and five for <italic>Pasteurella</italic> spp.), while 35 cases were positive for 2 pathogens: BRSV plus <italic>P. multocida</italic> (n = 21) or <italic>M. haemolytica</italic> (n = 14).<bold>Conclusion:</bold> The presence of high levels of BRSV in dual infections indicates that BSRV may be the main pneumonia-inducing agent and an important predisposing factor for the formation of <italic>Pasteurella</italic> spp. infections in cattle naturally afflicted with pneumonia.</abstract>

Introduction: The aim of this study was to determine the predisposing effect of bovine respiratory syncytial virus (BRSV) on Pasteurella spp. infection in naturally-induced pneumonia in cattle by immunohistochemical labelling.Material and Methods: Lungs of cattle slaughtered in the slaughterhouse were examined macroscopically, and 100 pneumonic samples were taken. The samples were fixed in 10% neutral formalin and embedded in paraffin by routine methods. Sections 5 μm in thickness were cut. The streptavidin-peroxidase method (ABC) was used to stain the sections for immuno-histochemical examination.Results: BRSV antigens were found in the cytoplasm of epithelial cells of bronchi, bronchioles, and alveoles and within inflammatory cell debris and inflammatory exudate in bronchial lumens. Pasteurella spp. antigens were detected in the cytoplasm of the epithelial cells of bronchi and bronchioles, and in cells in the lumens of bronchi and bronchioles. Eleven cases were positive for only one pathogen (six for BRSV and five for Pasteurella spp.), while 35 cases were positive for 2 pathogens: BRSV plus P. multocida (n = 21) or M. haemolytica (n = 14).Conclusion: The presence of high levels of BRSV in dual infections indicates that BSRV may be the main pneumonia-inducing agent and an important predisposing factor for the formation of Pasteurella spp. infections in cattle naturally afflicted with pneumonia.

Detection of bovine respiratory syncytial virus, <italic>Pasteurella multocida</italic>, and <italic>Mannheimia haemolytica</italic> by immunohistochemical method in naturally-infected cattle

Department of Pathology, Faculty of Veterinary Medicine

Department of Pathology, Faculty of Medicine

Journal of Veterinary Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Detection of bovine respiratory syncytial virus, , and  by immunohistochemical method in naturally-infected cattle

Introduction: The aim of this study was to determine the predisposing effect of bovine respiratory syncytial virus (BRSV) on Pasteurella spp. infection in...

Detection of bovine respiratory syncytial virus, Pasteurella multocida, and Mannheimia haemolytica by immunohistochemical method in naturally-infected cattle

Published Online: Dec 31, 2018

Page range: 439 - 445

Received: Jun 21, 2018

Accepted: Nov 23, 2018

DOI: https://doi.org/10.2478/jvetres-2018-0070

Keywords
cattle, bovine respiratory syncytial virus, immunohistochemistry

© 2018 Turan Yaman et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Detection of bovine respiratory syncytial virus, Pasteurella multocida, and Mannheimia haemolytica by immunohistochemical method in naturally-infected cattle

Published Online: Dec 31, 2018

Page range: 439 - 445

Received: Jun 21, 2018

Accepted: Nov 23, 2018

DOI: https://doi.org/10.2478/jvetres-2018-0070

Keywordscattle, bovine respiratory syncytial virus, immunohistochemistry

© 2018 Turan Yaman et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
cattle, bovine respiratory syncytial virus, immunohistochemistry