English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/104136
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Relation between pathologic findings and cellular immune responses in sheep with naturally acquired paratuberculosis

Autor Pérez Pérez, Valentín ; Tellechea, J.; Corpa, J. M.; Gutiérrez, M. ; García Marín, Juan Francisco
Palabras clave Classification
Absorbed Elisa
Interferon-Gamma
Mycobacterium-Paratuberculosis
Spectrum
Agar-Gel Immunodiffusion
Diagnosis
Infection
Ruminant Paratuberculosis
Tuberculosis Johnes Disease
Fecha de publicación 1999
EditorAmerican Veterinary Medical Association
Citación American Journal of Veterinary Research 60: 123-127 (1999)
ResumenObjective-To investigate the relation between lesions and cellular immune response-based tests in sheep with naturally acquired paratuberculosis and to evaluate efficacy of an interferon-gamma (IFN-gamma) assay and the intradermal skin test. Animals-110 and 88 adult sheep were used to evaluate the IFN-gamma assay and skin test, respectively. Procedure-Before euthanasia, heparinized blood was collected and incubated with avian purified protein derivative (PPD). Interferon-gamma production was assessed, using a commercial enzyme immunoassay. Skin testing in the caudal fold also was performed, using avian PPD. Sensitivity and specificity of these techniques were evaluated, using histopathologic findings as reference. Results-Of the sheep examined, 61 (55.4%) had lesions that were classified in 5 categories, according to location, extension, cellular types, and presence of acid-fast bacilli. Regarding cellular immunity lest results, 55.4% of sheep with and 6.2% without pathologic changes had positive results of the IFN-gamma assay. Skin test sensitivity (55.6%) and specificity (100%) were slightly greater. Conclusion-Close association between pathologic findings and cellular immune response was apparent. Most sheep with focal (tuberculoid) and some with diffuse lesions (borderline tuberculoid), all with scant or no acid-fast bacilli in the intestine, had positive results of the IFN-gamma, assay and skin test. Most sheep with diffuse lesions and high numbers of bacilli (borderline lepromatous) were test negative. Clinical Relevance-Cellular immune response-based and serologic tests are useful tools for seeking evidence of paratuberculosis. Each technique detects different types of immune-reacting sheep, and their simultaneous use may detect most infected animals.
Descripción 5 páginas.
Versión del editorhttps://www.avma.org/Pages/home.aspx
URI http://hdl.handle.net/10261/104136
ISSN0002-9645
Aparece en las colecciones: (IGM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.