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Neuropathic Gastric Dilatation in Psittaciformes

A. Mannl, Helga Gerlach and Rose Leipold
Avian Diseases
Vol. 31, No. 1 (Jan. - Mar., 1987), pp. 214-221
DOI: 10.2307/1590799
Stable URL: http://www.jstor.org/stable/1590799
Page Count: 8
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Neuropathic Gastric Dilatation in Psittaciformes
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Abstract

Psittacine neuropathic gastric dilatation was studied in four cockatoos (Cacatua spp.). The birds died with characteristic clinical signs, and post-mortem examination revealed a highly distended proventriculus. Upon light microscopic examination, most of the ganglia of the gastric plexus and some of the duodenal myenteric plexus appeared destroyed and replaced by round cell accumulations; the same was true for the celiac ganglion. The neuronal perikaryon of the celiac ganglion and the myenteric plexus revealed intranuclear and extranuclear eosinophilic inclusion bodies. The electron microscope revealed virus-like particles outside and within those inclusions. These particles were similar to particles described and identified as paramyxovirus. /// Se estudió la dilatación gástrica neuropática de psitácidas en 4 cacatúas (Cacatua spp.). Las cacatúas murieron mostrando signos clínicos característicos y el exámen post-mortem reveló la presencia de un proventrículo bastante distendido. Al examen microscópico se encontró que la mayoría de los ganglios de los plexos gástrico y mioentérico duodenal habían sido reemplazados por acumulaciones de células redondeadas. Esto también se observó en el ganglio celíaco. Se observó además la presencia de cuerpos de inclusión eosinofílicos intra y extranucleares en el pericarión del ganglio celíaco y en el plexo mioentérico. Al microscopio electrónico se observaron partículas parecidas a un virus localizadas fuera y dentro de las inclusiones. Estas partículas resultaron similares a las que se describen e identifican como paramixovirus.

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