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Título: | Histopathological changes in the brain of mouse fetuses by etoposide-administration |
Fecha de publicación: | 2006 |
Editorial: | Murcia : F. Hernández |
ISSN: | 0213-3911 |
Materias relacionadas: | CDU::6 - Ciencias aplicadas::63 - Agricultura. Silvicultura. Zootecnia. Caza. Pesca::636 - Veterinaria. Explotación y cría de animales. Cría del ganado y de animales domésticos |
Palabras clave: | Apoptosis Etoposide |
Resumen: | Etoposide (VP-16), a topoisomerase II inhibitor, is an anti-tumor agent which is also known to show embryotoxicity, and teratogenicity when administered to pregnant rodents. We examined VP-16- induced histopathological changes in the brain of mouse fetuses. Pregnant mice were intraperitoneally injected with VP-16 (4 mg/kg) on day 12 of gestation (GD 12), and fetuses were collected from 1 to 48 hours after treatment (HAT). Mitotic neuroepithelial cells in the telencephalic wall prominently decreased at 2 HAT, and were hardly observed at 4 HAT. The number of pyknotic neuroepithelial cells in the fetal brain began to increase at 4 HAT, and became prominent from 8 to 24 HAT. These pyknotic cells were also positively stained by TUNEL method, which can detect fragmented DNA, and showed ultrastructural characteristics of apoptosis. Additionally, these cells were also positive for cleaved caspase-3, an essential executioner of apoptosis. This indicated that excessive neuroepithelial cell apoptosis was induced in the brain of mouse fetuses following VP- 16 treatment on GD 12. |
Autor/es principal/es: | Nam, C. Woo, G.H. Uetsuka, K. Nakayama, Hiroyuki Doi, K. |
Forma parte de: | Histology and histopathology |
URI: | http://hdl.handle.net/10201/22626 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 7 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol.21, nº 3 (2006) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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Histopathological changes in the brain of mouse fetuses by etoposideadministration.pdf | 5,39 MB | Adobe PDF | Visualizar/Abrir |
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