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Title

Immunohistochemical expression of interferon-γ in different types of granulomatous lesions associated with bovine paratuberculosis

AuthorsFernández Fernández, M. ; Fuertes, M. ; Elguezabal, Natalia; Castaño, Pablo ; Royo, M. ; Ferreras, Mª del Carmen ; Benavides, Julio ; Pérez Pérez, Valentín
KeywordsIFN-γ
Bovine
Paratuberculosis
Immunohistochemistry
Lesion
Issue Date2017
PublisherElsevier
CitationComparative Immunology, Microbiology and Infectious Diseases 51: 1- 8 (2017)
AbstractAnimals infected with Mycobacterium avium subsp. paratuberculosis (Map) show a variety of lesions, from focal forms, seen in subclinical stages to diffuse lesions in clinical cases. The purpose of this study was to evaluate the local expression of IFN-γ by immunohistochemistry in relation with the type of lesion in naturally Map-infected cows. The number of immunolabelled cells, −the majority morphologically consistent with lymphocytes-, was higher in focal and diffuse paucibacillary forms than in diffuse multibacillary lesions, where they appeared closely related to epithelioid cells. Diffuse multibacillary lesions had the lowest numbers, but higher than controls, and positive cells were intermingled among the macrophages. The peripheral IFN-γ production was higher in all Map infected cows and a positive correlation was found with the number of immunolabelled cells in the intestine. The findings of this study show that IFN-γ would play a role in the development of the different types of lesions in paratuberculosis, and also points out the importance of adequate sampling of lymphoid tissue containing samples when studying the local immune response in which IFN-γ expression may be involved, especially in cases where focal lesions are present.
Description8 páginas, 5 figuras.
Publisher version (URL)http://dx.doi.org/10.1016/j.cimid.2017.01.002
URIhttp://hdl.handle.net/10261/154240
DOI10.1016/j.cimid.2017.01.002
ISSN1878-1667
Appears in Collections:(IGM) Artículos
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