Histological changes in the nasal ventral conchae of piglets infected with Bordetella bronchiseptica

Piglets infected intranasally with Bordetella bronchiseptica were injected with two fluorochrome markers. Transverse sections of undecalcified nasal conchae (cut between the third incisor and the third premolar teeth) were examined by microradiography and fluorescence microscopy; surface-stained sec...

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Bibliographic Details
Published in:Canadian journal of veterinary research 1991, Vol.55 (1), p.42-49
Main Authors: Martineau-Doize, B, Trepanier, H, Martineau, G.P
Format: Article
Language:English
Subjects:
Animals
atrophic rhinitis
bone mineralization
bone resorption
bones
Bordetella bronchiseptica
Bordetella Infections - pathology
Bordetella Infections - veterinary
cells
Fluorescent Dyes
fluorescent tracers
histology
Microscopy, Fluorescence
nose
osteoblasts
piglets
prebone
Rhinitis, Atrophic - pathology
Rhinitis, Atrophic - veterinary
Swine
Swine Diseases - pathology
Turbinates - pathology
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Summary:Piglets infected intranasally with Bordetella bronchiseptica were injected with two fluorochrome markers. Transverse sections of undecalcified nasal conchae (cut between the third incisor and the third premolar teeth) were examined by microradiography and fluorescence microscopy; surface-stained sections were evaluated by light microscopy. The fluorescent surface of the nasal ventral conchae from the infected piglets was increased as compared with the controls. This was due to an increased amount of fluorescent mineralization fronts as well as to the presence of abnormal fluorescent areas within trabeculae. Trabecular mineral content of the microradiographs was irregular and varied from hypo- to hypermineralized. When compared with the corresponding surface-stained sections, no correlation could be made between the mineral content and the type of tissue. These findings suggest that an increased number of osteoblasts which secrete prebone matrix but are modified so that mineralization does not occur normally.
ISSN:0830-9000