SciELO - Scientific Electronic Library Online

 
vol.28 número2Hermafroditismo en el Chorito Perumytilus purpuratus (Lamarck, 1819), (Mollusca: Mytilidae)Distribución del Ramo Profundo del Nervio Ulnar en los Músculos Intrínsecos del Dedo Mínimo en Individuos Chilenos índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


International Journal of Morphology

versão On-line ISSN 0717-9502

Resumo

VASCONCELLOS C, Adriana et al. Study of the Expression of Progesterone Receptors in the Endometrium of Ewes with Normal and Supplementary Diet. Int. J. Morphol. [online]. 2010, vol.28, n.2, pp.575-578. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022010000200039.

The influence of nutrition on reproduction in sheep is complex and the reported results are variable. Low nutritional programs can cause a reduction in the sensitivity of the endometrium to progesterone which affects morphofunctional development of the endometrium in early stages of pregnancy and therefore is in direct expense of the survival of the embryo. Progesterone and estrogens act through specific intracellular receptors that mediate its physiological effect. Therefore the level of expression of these receptors is essential for the hormonal effect. The aim of this study was to analyze the expression of progesterone receptors (PR) and estrogen (ER) in the endometrium of sheep supplemented diet cycle and fed normal diet. The expression of the receptor protein and the transcript of both receptors was detected by immunohistochemistry and RT-PCR Real Time. The results show immunohistochemical expression against both receptors in caruncular and glandular areas, highlighting an intense immunoreaction in the nucleus of stromal cells and glandular epithelium. Were detected increased expression of the transcript of both receptors in sheep fed on the supplement that did not receive food supplement. We discuss the possible use of this information for applications in breeding programs in sheep breeding.

Palavras-chave : Oveja criolla Araucana; Reproductive system; Sheep food.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons