Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10201/29799
Twittear
Título: | The presence of the u-opioid receptor in the isthmus of mare oviduct |
Fecha de publicación: | 2008 |
Editorial: | Murcia : F. Hernández |
ISSN: | 0213-3911 |
Materias relacionadas: | 636 - Veterinaria. Explotación y cría de animales. Cría del ganado y de animales domésticos |
Palabras clave: | Oviduct Glycosylation |
Resumen: | The presence of the μ-opioid receptor and the type of glycosylation in the third extra-cellular loop of this receptor was investigated in the isthmus of mare oviduct during oestrus by means of immunoblotting and immunohistochemistry combined with enzymatic (Nglycosidase F and O-glycosidase) and chemical (ßelimination) treatments. Immunoblotting analysis showed that the μ -opioid receptor consists of two peptides with molecular weights of around 65 and 50 kDa. After N-deglycosylation with N-glycosidase F an additional immunoreactive peptide was observed at around 30 KDa. The cleavage of O-glycans by Oglycosidase failed in immunoblotting as well as in immunohistochemistry investigations, revealing that the third extra-cellular loop of the μ -opioid receptor expressed in mare isthmus oviduct contains some modifications of the Galß(1-3)GalNAc core binding to serine or threonine. Immunohistochemistry revealed the μ-opioid receptor in the mucosal epithelium, some stromal cells, muscle cells and blood vessels. In ciliated cells the μ-opioid receptor showed N-linked glycans, since the immunoreactivity was abolished after Nglycosidase F treatment, whereas it was preserved in the apical region after ß-elimination. Most non-ciliated cells expressed the μ-opioid receptor with both N- and Olinked oligosaccharides, as revealed by the abolition of immunostaining after N-glycosidase F and ßelimination. Stromal cells, endothelial and muscle cells of blood vessels expressed the μ -opioid receptor containing both N- and O-linked oligosaccharides. Myosalpinx myocytes expressed the μ-opioid receptor with O-linked oligosaccharides. The immunopositive myocytes formed a circular coat in the intrinsic musculature, whereas they were arranged in some isolated, oblique bundles in the extrinsic musculature. In conclusion, the μ-opioid receptor could have a role in the production and the movement of isthmus lumen content that contributes to ensuring the effective condition of the sperm in the mare oviduct. |
Autor/es principal/es: | Desantis, S. Albrizio, M. Ventriglia, G. Deflorio, M. Guaricci, A.C. Minoia, R. De Metrio, G. |
Forma parte de: | Histology and histopathology |
URI: | http://hdl.handle.net/10201/29799 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 10 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol.23, nº5 (2008) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
The presence of the u-opioid receptor in the isthmus of mare oviduct.pdf | 4,44 MB | Adobe PDF | Visualizar/Abrir |
Los ítems de Digitum están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.