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Experimental mycoplasmal pneumonia in dogs: electron microscopy of infected tissue
Acta Pathologica Et Microbiologica Scandinavica. Section B, Microbiology
|December 1, 1977
Abstract:
Thin sections of lung tissue from dogs with pneumonia induced by endobronchial inoculation of Mycoplasma cynos were examined by electron microscopy. Mycoplasmas were observed extracellularly in lumen of bronchus and in alveoli in the earlier stages of the infection. The infection also resulted in degenerative changes in the bronchial epithelial cells, including in particular destruction and loss of cilia.
Insights
Electron microscopy revealed Mycoplasma cynos bacteria in dog lungs during pneumonia. The infection caused damage to bronchial epithelial cells and loss of cilia.
Area of Science:
- Veterinary Pathology
- Microbiology
- Pulmonary Medicine
Background:
- Pneumonia in dogs can be caused by various pathogens.
- Mycoplasma cynos is a bacterium that can affect canine respiratory health.
Purpose of the Study:
- To investigate the ultrastructural changes in canine lung tissue during Mycoplasma cynos-induced pneumonia.
- To identify the location and interaction of Mycoplasma cynos within the respiratory tract.
Main Methods:
- Electron microscopy was used to examine thin sections of lung tissue.
- Canine pneumonia was experimentally induced via endobronchial inoculation of Mycoplasma cynos.
Main Results:
- Mycoplasmas were observed extracellularly within the bronchial lumen and alveoli during early infection stages.
- Degenerative changes in bronchial epithelial cells were noted.
- Significant destruction and loss of cilia on bronchial epithelial cells were a key finding.
Conclusions:
- Mycoplasma cynos invades the canine respiratory tract, localizing in bronchi and alveoli.
- The bacterium induces pathological changes in bronchial epithelial cells, including ciliotoxicity.
- These findings contribute to understanding the pathogenesis of Mycoplasma cynos pneumonia in dogs.