Results 271 to 280 of about 70,085 (316)
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Ovarian control of follicle development
American Journal of Obstetrics and Gynecology, 1995A variety of ovarian autocrine and paracrine factors may modulate folliculogenesis and steroid production. The developmental program that leads to the production of a dominant follicle involves a precise quantitative and temporal pattern of expression of a large number of genes.
G F, Erickson, D R, Danforth
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Predictors of ovarian follicle number
Fertility and Sterility, 2000To identify factors associated with ovarian follicle density in women of reproductive age.Women undergoing incidental oophorectomy responded to structured interviews. Grossly normal ovaries were sectioned and assessed for follicle density.University hospital.102 women undergoing hysterectomy with incidental oophorectomy who had morphologically normal ...
C, Westhoff, P, Murphy, D, Heller
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Effects of melatonin on ovarian follicles
European Journal of Obstetrics & Gynecology and Reproductive Biology, 2013To evaluate the histomorphometry and expression of Ki-67 and c-kit in ovarian follicles of pinealectomized or melatonin-treated pinealectomized rats.Forty adult rats were randomly divided into four groups of 10 animals: Group I - control; Group II - sham-pinealectomized; Group III - pinealectomized (Px), and Group IV - Px treated with melatonin (10μg ...
Maganhin, Carla Cristina UNIFESP +6 more
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In Vitro Development of Ovarian Follicles
Seminars in Reproductive Medicine, 2011Tissue banking of ovarian material is being increasingly offered to a variety of patients as a means of fertility preservation. This tissue comprises thin cortical surface biopsies that contain predominantly primordial follicles, and currently the only option to restore fertility is by transplantation.
Evelyn E, Telfer, Marie, McLaughlin
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In vitro culture of ovarian follicles
Reviews of Reproduction, 1997This review offers a practically oriented introduction to follicle culture in vitro, focusing on mouse follicles, but with reference to other species. The main principles of follicle growth are addressed, including the constraints of tissue culture, methods of follicle isolation, and techniques for individual and collective culture of intact follicles.
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Impact of endometriosis on the ovarian follicles
Best Practice & Research Clinical Obstetrics & GynaecologyA significant body of evidence has supported a negative impact of endometriosis on ovarian follicles; however, the origin and relevance of this ovarian impairment in endometriosis is still a matter of debate. The ovarian damage can be caused by endometriosis itself or by surgeries aiming to remove endometriotic lesions.
Maíra Casalechi +4 more
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Reconstituting the ovarian follicle
Science, 2021Developmental Biology Recent advances have enabled the generation of oocytes from pluripotent stem cells in vitro. However, these cells require a somatic environment to develop fully as reproductive cells. Yoshino et al. applied what is known about differentiation processes in vivo to determine a culture condition to differentiate embryonic stem cells ...
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Hemorrhagic ovarian follicles in llamas
Theriogenology, 1991The ovaries of 74 llamas were examined daily by transrectal ultrasonography for at least 30 d. Hemorrhagic follicles were observed in 13 (18%) llamas (incidence per anovulatory dominant follicle, 16%). The proportion of llamas in which a hemorrhagic follicle was detected was different among groups (nonmated, 8/25; mated to a vasectomized male, 4/21 ...
G P, Adams, J, Sumar, O J, Ginther
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The Reproductive Lifespan of Ovarian Follicle
Reproductive SciencesThe functional unit within mammalian ovaries is the ovarian follicle. The development of the ovarian follicle is a lengthy process beginning from the time of embryogenesis, passing through multiple different stages of maturation. The purpose of this review is to describe the most basic events in the journey of ovarian follicle development, discussing ...
Kallirhoe Kalinderi +3 more
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The bovine dominant ovarian follicle
Journal of Animal Science, 2007Central roles in reproductive biology (i.e., growth and development of the oocyte, steroidogenesis, and ovulation) are played by the ovarian dominant follicle (DF). The DF is different from other follicles because it can escape atresia (the fate of all other follicles), and if exposed to the LH surge, its cells will differentiate into the corpus luteum.
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