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Related Experiment Videos

Atrophic rhinitis caused by Pasteurella multocida type D: morphometric analysis.

B Martineau-Doizé1, G Dumas, R Larochelle

  • 1Groupe de Recherche sur les Maladies Infectieuses de Porc (GREMIP), Faculté de Médecine vétérinaire, Université de Montréal, Québec.

Canadian Journal of Veterinary Research = Revue Canadienne De Recherche Veterinaire
|July 1, 1991
PubMed
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Pasteurella multocida type D dermonecrotoxin causes severe nasal conchae atrophy in piglets. This nasal atrophy was observed along the entire conchae, most significantly near the first and second premolar teeth.

Area of Science:

  • Veterinary Pathology
  • Animal Microbiology

Background:

  • Pasteurella multocida is a significant pathogen in swine.
  • Nasal atrophy, a common condition in pigs, can be caused by various factors, impacting respiratory health and productivity.

Purpose of the Study:

  • To investigate the distribution and extent of nasal conchae atrophy induced by Pasteurella multocida type D dermonecrotoxin in piglets.
  • To quantify the morphometric changes in the nasal cavity following experimental toxin administration.

Main Methods:

  • Experimental piglets were injected with P. multocida type D dermonecrotoxin at varying doses.
  • Nasal tissues were collected at different time points post-injection (4, 6, and 10 days).
  • Serial sections of nasal conchae were analyzed morphometrically to measure atrophy and calculate the nasal cavity index.

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Main Results:

  • P. multocida type D dermonecrotoxin induced severe atrophy of the nasal ventral conchae.
  • The observed atrophy extended along the entire length of the nasal conchae.
  • The most severe atrophy was localized at the level of the first and second premolar teeth.

Conclusions:

  • Pasteurella multocida type D dermonecrotoxin is a potent agent causing significant nasal conchae atrophy in young pigs.
  • The findings highlight the specific impact of this toxin on nasal turbinate structures, potentially leading to respiratory compromise.