Related Animal Research
- Recently, two publications have reported the renewal of ovarian follicles from germline stem cells. Prior to these papers it was believed that the number of oocytes was fixed.
- While the primary cause of the end to menstrual cycles is the exhaustion of ovarian follicles, there is some evidence that a defect in the hypothalamus is critical in the transition from regular to irregular cycles. This is supported by at least one study in which transplantation of ovaries from old rats to young ovariectomized rats resulted in follicular development and ovulation. Also, electrical stimulation of the hypothalamus is capable of restoring reproductive function in aged animals. Due to the complex interrelationship among the hypothalamus, pituitary and ovaries (HPO axis) defects in the functioning of one level can cause defects on the other levels.
Read more about this topic: Poor Ovarian Reserve
Famous quotes containing the words related, animal and/or research:
“Perhaps it is nothingness which is real and our dream which is non-existent, but then we feel think that these musical phrases, and the notions related to the dream, are nothing too. We will die, but our hostages are the divine captives who will follow our chance. And death with them is somewhat less bitter, less inglorious, perhaps less probable.”
—Marcel Proust (1871–1922)
“The screech and mechanical uproar of the big city turns the citified head, fills citified ears—as the song of birds, wind in the trees, animal cries, or as the voices and songs of his loved ones once filled his heart. He is sidewalk- happy.”
—Frank Lloyd Wright (1869–1959)
“The great question that has never been answered, and which I have not yet been able to answer, despite my thirty years of research into the feminine soul, is “What does a woman want?” [Was will das Weib?]”
—Sigmund Freud (1856–1939)