Membrane permeability changes during Rana oocyte maturation

Y. T. Lau*, J. K. Reynhout, S. B. Horowitz

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

6 Scopus citations


A transition from an open system to a closed one must occur during the complex process of meiotic maturation of the amphibian oocyte. Membrane permeability to urea in Rana oocytes following progesterone stimulation was determined, and the largest decrease was found to coincide with germinal vesicle breakdown. These findings suggest that the timing of the disappearance of membrane permeability correlates with developmental events that prepare the oocyte for a hostile environment.

Original languageEnglish
Pages (from-to)606-609
Number of pages4
Issue number6
StatePublished - 06 1994
Externally publishedYes


  • Oocyte maturation
  • Rana pipiens
  • germinal vesicle breakdown
  • progesterone
  • urea permeability


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