Cumulus cell dispersion induced by estradiol in mouse oviduct in vitro

Luis S. Roblero, Marta D. Riffo, Horacio B. Croxatto

Resultado de la investigación: Article

1 Cita (Scopus)

Resumen

Dispersion of cumulus cells in nonmated mice is completed in the oviduct 15–20 h after ovulation. Oviducts, isolated 1 h after ovulation (13 h post‐human chorionic gonaditropin), were cultured in vitro for 40 h. In these oviducts, denuded oocytes were first seen at 30 h of culture, indicating that cumulus dispersion proceeded at a slower rate in vitro. Oocyte denudation was accelerated in a dose‐dependent manner by the addition of estiadiol to the culture medium in which oviducts were incubated. The addition of progesterone or cycloheximide to the culture medium strongly inhibited oocyte denudation even in the presence of estradiol. When isolated cumuli were incubated in the absence of oviductal tissue, the rate of cell dispersion was slower than that of cumuli incubated inside the oviduct and the addition of estradiol to the culture failed to accelerate this process. On the basis of these data, we propose that cumulus cell dispersion is accelerated by an estrogen‐dependent protein produced by the oviduct and that this effect of estrogen is antagonized by progesterone.

Idioma originalEnglish
Páginas (desde-hasta)467-473
Número de páginas7
PublicaciónGamete Research
Volumen23
N.º4
DOI
EstadoPublished - 1989

Huella dactilar

Cumulus Cells
Oviducts
Estradiol
Oocytes
Ovulation
Progesterone
Culture Media
Cycloheximide
In Vitro Techniques
Estrogens
Proteins

ASJC Scopus subject areas

  • Genetics
  • Developmental Biology

Citar esto

Roblero, Luis S. ; Riffo, Marta D. ; Croxatto, Horacio B. / Cumulus cell dispersion induced by estradiol in mouse oviduct in vitro. En: Gamete Research. 1989 ; Vol. 23, N.º 4. pp. 467-473.
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Cumulus cell dispersion induced by estradiol in mouse oviduct in vitro. / Roblero, Luis S.; Riffo, Marta D.; Croxatto, Horacio B.

En: Gamete Research, Vol. 23, N.º 4, 1989, p. 467-473.

Resultado de la investigación: Article

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AU - Croxatto, Horacio B.

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