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Título: | Corticosterone 21-acetate in vivo induces acute stress in chicken thymus: cell proliferation, apoptosis and cytokine responses |
Fecha de publicación: | 2004 |
Editorial: | Murcia : F. Hernández |
ISSN: | 0213-3911 |
Materias relacionadas: | CDU::5 - Ciencias puras y naturales::57 - Biología |
Palabras clave: | Thymus Cytokines |
Resumen: | In vivo effects of acute stress induced by corticosterone 21-acetate in male Gallus domesticus thymus are studied and the steroid actions are evaluated in terms of cell proliferation, apoptosis and cytokine response in 10- and 21-day-old chickens. Steroid treatment induced thymocyte apoptosis and cell death decreased in the cortical-medullar direction and was more evident in younger animals. 24 h after treatment, the observed effect was reversed. The mitotic activity and thymic cells containing cytokine-like molecules were also affected. Indeed, the acute stress stimulated cytokine immunoreactivity to anti-IL-1a, IL-6 and TNF- a antibodies both in epithelial cells and interdigitating cells located in medullar and cortical-medullar regions. The increased cytokine expression observed after 12 h was maintained after 24 h. The comparison between 10- and 21-day-old chickens showed a lower number of cells containing cytokine-like molecules in younger specimens. The present findings suggest that cytokines activated by acute stress in vivo could contribute to restoring immunological homeostasis and influence thymic glucocorticoid-mediated functions. |
Autor/es principal/es: | Franchini, A. Marchesini, E. Ottaviani, E. |
Forma parte de: | Histology and histopathology |
URI: | http://hdl.handle.net/10201/21599 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 7 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol.19, nº 3 (2004) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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Corticosterone 21acetate in vivo.pdf | 2,41 MB | Adobe PDF | Visualizar/Abrir |
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