Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/43359
Title: Chronological and immunohistochemical characterization of the mammary immunoinflammatory response in experimental caprine contagious agalactia
Authors: Castro Alonso, Ayoze 
De la Fe, Christian
Espinosa de los Monteros y Zayas, Antonio 
Rodríguez Guisado, Francisco 
Andrada Borzollino, Marisa Ana 
Poveda Guerrero, José Bismarck 
Herráez Thomas, Pedro Manuel 
UNESCO Clasification: 310907 Patología
Keywords: Caprine contagious agalactia
Goat
Mycoplasma agalactiae
Mamitis
MHC-II, et al
Issue Date: 2010
Publisher: 0165-2427
Journal: Veterinary Immunology and Immunopathology 
Abstract: To explore the pathogenesis of caprine contagious agalactia (CA), we assessed the ability of Mycoplasma agalactiae (Ma) to modulate the immune system in host tissues by immunohistochemically and chronologically characterizing the main cell subsets present during the mammary immunoinflammatory response. Fifteen lactating goats were inoculated with 10(10) colony-forming units (cfu) of Ma and killed 5, 15 or 45 days post-inoculation (dpi). Blood was taken before necropsy to determine antibodies and milk to determine mycoplasma number. Cells in mammary tissue expressing lysozyme, myeloid-histiocyte antigen (Mac387), major histocompatibility complex class II antigen, immunoglobulin G (IgG), IgA, and CD3, CD4 and CD8 lymphocytes were determined by immunohistochemistry. Results indicate an innate immune response in animals sacrificed at 5dpi, characterized by an abundance of Mac387+ and lysozyme+ cells, that was unable to block or control Ma infection. Elevated numbers of all the cell subsets of the specific immune response (MHC-II+, IgG+, IgA+, CD3+, CD4+ and CD8+ cells) were observed during the subacute stage of the inflammatory process, represented by the 15dpi group. However, these findings could not be correlated with an intense antibody response in blood. The chronic stage of the inflammatory process observed in the goats killed at 45dpi was mainly characterized by expansion of the CD8 compartment at the expense of the CD4 subset leading to a reduced CD4/CD8 ratio. These results contribute to establishing the basic morphological and immunohistochemical characterization of the local immune response against Ma in the goat's mammary gland.
URI: http://hdl.handle.net/10553/43359
ISSN: 0165-2427
DOI: 10.1016/j.vetimm.2010.02.005
Source: Veterinary Immunology and Immunopathology [ISSN 0165-2427], v. 136(1-2), p. 43-54
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