Proliferative Enteropathy caused by Lawsonia intracellularis in Chickens.
J Comp Pathol
; 156(2-3): 158-161, 2017.
Article
en En
| MEDLINE
| ID: mdl-28034455
ABSTRACT
Proliferative enteropathy (PE) is an infectious disease caused by Lawsonia intracellularis (Li), an obligate intracellular bacterium. PE is endemic in swine herds and has been reported in a variety of mammals including horses, hamsters, rabbits, rats, guinea pigs, ferrets, foxes, dogs, sheep, deer and non-human primates. Avian cases are reported only in ratite birds, including emus and ostriches. Some studies show an absence of Lawsonia spp. infection in chickens. In this study, we performed morphological and bacteriological examinations on the intestines of two broiler chickens that had been condemned at a poultry slaughter plant in Japan due to intestinal haemorrhage, which was a result of focal coccidial enteritis. Histopathology revealed proliferation of the villous epithelium in the small and/or large intestines, especially the caeca, regardless of coccidial lesions. Warthin-Starry silver staining and immunohistochemistry using anti-Li monoclonal antibody revealed numerous bacteria and/or antigens in the villous epithelium. Scanning electron microscopy and transmission electron microscopy revealed the presence of curved rods, morphologically compatible with Li, in the apical cytoplasm of the epithelium. Polymerase chain reaction products specific for Li were amplified from DNA samples extracted from formalin-fixed and paraffin wax-embedded tissue. These results suggest that Li can cause PE, characterized by proliferation of the villous epithelium, in chickens.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de las Aves de Corral
/
Pollos
/
Infecciones por Desulfovibrionaceae
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Enteritis
Límite:
Animals
Idioma:
En
Revista:
J Comp Pathol
Año:
2017
Tipo del documento:
Article
País de afiliación:
Japón