{"id":5193,"date":"2014-01-18T14:50:22","date_gmt":"2014-01-18T13:50:22","guid":{"rendered":"https:\/\/sesc.cat\/atrophic-rhinitis\/"},"modified":"2022-03-24T19:00:34","modified_gmt":"2022-03-24T18:00:34","slug":"atrophic-rhinitis","status":"publish","type":"post","link":"https:\/\/sesc.cat\/en\/atrophic-rhinitis\/","title":{"rendered":"Atrophic rhinitis"},"content":{"rendered":"

Inspectors reported lesions consistent with atrophic rhinitis<\/strong>, but the aim of distinguishing between progressive and non-progressive atrophic rhinitis. Both processes are of a multifactorial etiology and with morphologically similar lesions but the pathological significance is different.<\/p>\n\n\n\n\n\n\n\n\n
<\/td>\n\n

Nonprogressive atrophic rhinitis<\/b><\/p>\n<\/td>\n

\n

Progressive atrophic rhinitis\u00a0<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

Etiology<\/b><\/p>\n<\/td>\n

\n

\u00a0Bordetella bronchiseptica<\/i><\/p>\n<\/td>\n

\n

Pasteurella multocida<\/i><\/p>\n

(dermonecrotic toxin positive).<\/p>\n<\/td>\n<\/tr>\n

\n

Predisposing factors<\/b><\/p>\n<\/td>\n

\n

Poor air quality \u00a0(dust, \u00a0ammonia…).<\/p>\n<\/td>\n

\n

Concurrent\u00a0B.bronchiseptica <\/i>infection<\/p>\n

Poor air quality \u00a0(dust, \u00a0ammonia…).<\/p>\n<\/td>\n<\/tr>\n

\n

Lesions<\/b><\/p>\n<\/td>\n

\n

Snout distortion.<\/p>\n

Atrophy and malformation of nasal turbinates.<\/p>\n

Brachyignathia superior (shortening of the maxillary bone).<\/p>\n<\/td>\n<\/tr>\n

\n

Diagnosis<\/b><\/p>\n<\/td>\n

\n

Microbiological culture of B. bronchiseptica <\/i>from nasal swabs samples.<\/i><\/p>\n<\/td>\n

\n

Determine the presence of dermonecrotic toxin positive – \u00a0\u00a0P.multocida<\/i><\/p>\n

Microbiological culture from nasal swabs or via direct nasal swab PCR<\/strong>.<\/p>\n<\/td>\n<\/tr>\n

\n

Observations<\/b><\/p>\n<\/td>\n

\n

Limited pathological significance.<\/i><\/p>\n<\/td>\n

\n

Might cause significant production losses.<\/p>\n

Export restrictions.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For diagnosis in slaughterhouse animals the ideal sample are nasal swabs taken before scalding. \u00a0But tissue samples (nasal turbinates) of scalded and\/or frozen carcasses can also be submitted for direct PCR identification of P.multocida<\/em> and its toxin. nasal swabs without\u00a0 transport medium can be used, ensuring contact with the nasal mucosa, and it is best to send them at room temperature as the cold can inactivate the pasteurella. In case of late shipping, it is recommended to freeze the swabs.<\/p>\n

\"<\/a>

Pig skull with shortened snout \u00a0(brachyignathia). The presence of P. multocida<\/em> could not be confirmed with the direct PCR.<\/p><\/div>\n

\"<\/a>

Another case of a pig carcass with distorted snout. In this case, direct PCR revealed the presence of dermonecrotic toxin positive P. multocida<\/em>.<\/p><\/div>\n

\"Longitudinal<\/a>

Longitudinal section of the skull, \u00a0complete\u00a0turbinate atrophy can be\u00a0appreciated. In this case PCR revealed the presence\u00a0\u00a0of dermonecrotic toxin positive\u00a0P. multocida<\/em>.<\/p><\/div>\n

\"<\/a>

Another case of pig skull with shortened snout \u00a0(brachyignathia)\u00a0and, in the cross section, atrophy of the nasal turbinates.<\/p><\/div>\n

\"The<\/a>

The morphologic diagnosis of atrophic rhinitis is ideally done evaluating a cross section of the skull at the level of the 1st upper premolar (or the\u00a0labial commissure) that allows evaluating the atrophy of the turbinates. The image on the left corresponds to a pig with a normal turbinate morphology, on the right a clear case of atrophic rhinitis.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Inspectors reported lesions consistent with atrophic rhinitis, but the aim of distinguishing between progressive and non-progressive atrophic rhinitis. Both processes are of a multifactorial etiology and with morphologically similar lesions but the pathological significance is different. Nonprogressive atrophic rhinitis Progressive atrophic rhinitis\u00a0 Etiology \u00a0Bordetella bronchiseptica Pasteurella multocida (dermonecrotic toxin positive). Predisposing factors Poor air quality […]<\/p>\n","protected":false},"author":24311,"featured_media":6743,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[237,179],"tags":[390,397],"class_list":["post-5193","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-head-porcine-2","category-porcine-2","tag-head-en","tag-infectious-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/posts\/5193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/users\/24311"}],"replies":[{"embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/comments?post=5193"}],"version-history":[{"count":0,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/posts\/5193\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/media\/6743"}],"wp:attachment":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/media?parent=5193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/categories?post=5193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/tags?post=5193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}