Time course and pattern of cortical granule breakdown in hamster eggs after sperm fusion.
Mol Reprod Dev
; 30(4): 390-5, 1991 Dec.
Article
en En
| MEDLINE
| ID: mdl-1751044
ABSTRACT
We have determined the temporal relationship between sperm fusion and cortical granule breakdown in the hamster egg. Sperm fusion was determined by the Hoechst-transfer method (Stewart-Savage and Bavister Dev Biol 128150-157, 1988), and cortical granules were visualized with fluorescein isothiocynate-conjugated Lens culinaris agglutinin (Cherr et al. J Exp Zool 24681-93, 1988). By 55 min after insemination, there was an 85% reduction in the density of cortical granules (fewer than four granules/100 microns2). Taking this value as the completion of the cortical reaction, analysis of the data indicate that the cortical reaction was completed 9 min after sperm fusion and 3 min after the formation of the zona and cell surface blocks to polyspermy. There was no obvious spatial pattern of granule loss in eggs that had a Hoechst-positive sperm but had not completed the cortical reaction.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Óvulo
/
Interacciones Espermatozoide-Óvulo
/
Gránulos Citoplasmáticos
Límite:
Animals
Idioma:
En
Revista:
Mol Reprod Dev
Asunto de la revista:
BIOLOGIA MOLECULAR
/
MEDICINA REPRODUTIVA
Año:
1991
Tipo del documento:
Article