Rat oocytes induced to mature by epidermal growth factor are successfully fertilized.
Mol Cell Endocrinol
; 88(1-3): 135-41, 1992 Oct.
Article
en En
| MEDLINE
| ID: mdl-1459336
Epidermal growth factor (EGF), which is a known mitogen, can also induce resumption of meiosis in the rat oocyte. The present study was designed in an attempt to elucidate whether oocytes, induced to mature by EGF in a follicle-enclosed oocyte culture, are fertilizable and can further develop into two-cell embryos. For further clarification of the effect of EGF on steroidogenesis in the ovarian follicle, progesterone concentrations were determined by radioimmunoassay. We found that oocytes matured by EGF (100 ng/ml) were successfully fertilized. Even though their rate of fertilization was relatively lower as compared to that of oocytes stimulated by luteinizing hormone (LH) both in vitro and in vivo (61%, 79%, and 83% respectively), once fertilized they exhibit an equal potential for further development (EGF: 48%, LH: 45%). On the other hand, EGF-induced progesterone production was very poor. These findings strongly support the idea that both mitogenesis and meiogenesis can be mediated by common signals. The results further suggest that progesterone production and oocyte maturation, in the rat, are independent events.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Oocitos
/
Fertilización In Vitro
/
Factor de Crecimiento Epidérmico
Límite:
Animals
Idioma:
En
Revista:
Mol Cell Endocrinol
Año:
1992
Tipo del documento:
Article
País de afiliación:
Israel
Pais de publicación:
Irlanda