Search Results - "Fortune, J. E."
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Current achievements and future research directions in ovarian tissue culture, in vitro follicle development and transplantation: implications for fertility preservation
Published in Human reproduction update (01-07-2010)“…BACKGROUND Female cancer patients are offered ‘banking’ of gametes before starting fertility-threatening cancer therapy. Transplants of fresh and frozen…”
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Regulation of folliculogenesis and the determination of ovulation rate in ruminants
Published in Reproduction fertility and development (2011)“…The paper presents an update of our 1993 model of ovarian follicular development in ruminants, based on knowledge gained from the past 15 years of research…”
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Testosterone Stimulates the Primary to Secondary Follicle Transition in Bovine Follicles In Vitro
Published in Biology of reproduction (01-12-2006)“…The mechanisms controlling the initiation and early stages of follicular growth are poorly understood. Our laboratory developed a serum-free culture system…”
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Capacity of Primordial Follicles in Fetal Bovine Ovaries to Initiate Growth In Vitro Develops During Mid-Gestation and Is Associated with Meiotic Arrest of Oocytes
Published in Biology of reproduction (01-06-2008)“…In cattle and other species in which the pool of resting, primordial follicles is formed during fetal life, little is known about the regulation of the early…”
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The early stages of follicular development: activation of primordial follicles and growth of preantral follicles
Published in Animal reproduction science (15-10-2003)“…Although enormous progress has been made in understanding the events and regulation of the later stages of ovarian follicular development, the early stages of…”
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Ovarian follicular growth and development in mammals
Published in Biology of reproduction (01-02-1994)“…Evidence from several species indicates that the initial stages of follicular growth proceed very slowly. In contrast, the stages after antrum formation are…”
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Vascular endothelial growth factor stimulates the primary to secondary follicle transition in bovine follicles in vitro
Published in Molecular reproduction and development (01-09-2007)“…Little is known about the mechanisms regulating the growth of early preantral follicles, especially in nonrodent mammalian species. To test the hypothesis that…”
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Differentiation of Dominant Versus Subordinate Follicles in Cattle
Published in Biology of reproduction (01-09-2001)“…Selection of a dominant follicle, capable of ovulating, from among a cohort of similarly sized follicles is a critical transition in follicular development…”
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Evidence for a role for anti-Müllerian hormone in the suppression of follicle activation in mouse ovaries and bovine ovarian cortex grafted beneath the chick chorioallantoic membrane
Published in Molecular reproduction and development (01-08-2005)“…The first critical transition in follicular development, the activation of primordial follicles to leave the pool of resting follicles and begin growth, is…”
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Proteolysis of Insulin-Like Growth Factor Binding Proteins -4 and -5 in Bovine Follicular Fluid: Implications for Ovarian Follicular Selection and Dominance
Published in Endocrinology (Philadelphia) (01-07-2003)“…Dominant follicles are characterized by low levels of low molecular weight IGF binding proteins (IGFBPs) and by proteolytic activity against IGFBP-4 and -5. To…”
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Follicular development: the role of the follicular microenvironment in selection of the dominant follicle
Published in Animal reproduction science (01-07-2004)“…The importance of endocrine signals in the regulation of follicular development has long been recognized. However, the follicular microenvironment also plays a…”
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Initiation of growth of baboon primordial follicles in vitro
Published in Human reproduction (Oxford) (01-09-1997)“…Factors that cause some primordial follicles to enter the growth phase while the others remain quiescent are unknown. The hypothesis was tested that primate…”
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Initiation in vitro of growth of bovine primordial follicles
Published in Biology of reproduction (01-11-1996)“…Factors that control the onset of primordial follicle growth are unknown. We have tested the hypothesis that primordial follicles from fetal calves can survive…”
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Selection of the Dominant Follicle and Insulin-Like Growth Factor (IGF)-Binding Proteins: Evidence that Pregnancy-Associated Plasma Protein A Contributes to Proteolysis of IGF-Binding Protein 5 in Bovine Follicular Fluid
Published in Endocrinology (Philadelphia) (01-02-2003)“…Development of a dominant follicle is associated with decreased intrafollicular low molecular weight IGF-binding proteins (namely IGFBP-2, -4, and -5) and…”
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Bovine ovarian cortical pieces grafted to chick embryonic membranes: A model for studies on the activation of primordial follicles
Published in Human reproduction (Oxford) (01-01-2002)“…BACKGROUND: Little is known about the factors that control the initiation of growth of primordial follicles. Primordial follicles in pieces of fetal bovine…”
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Gonadotropin Surge Induces Two Separate Increases in Messenger RNA for Progesterone Receptor in Bovine Preovulatory Follicles
Published in Biology of reproduction (01-12-2002)“…In mice deficient in progesterone receptor (PR), follicles of ovulatory size develop but fail to ovulate, providing evidence for an essential role for…”
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Ovarian follicular dynamics during the estrous cycle in heifers monitored by real-time ultrasonography
Published in Biology of reproduction (01-09-1988)“…It is not clear whether the turnover of ovarian follicles during the estrous cycle in cattle is continuous and independent of the phase of the cycle, or…”
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Anti-Müllerian hormone inhibits activation and growth of bovine ovarian follicles in vitro and is localized to growing follicles
Published in Molecular human reproduction (01-05-2017)“…Does anti-Müllerian hormone (AMH) inhibit activation (initiation of growth) of primordial follicles and attenuate the growth of primary follicles in cattle, an…”
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Ovarian follicular dominance in cattle: relationship between prolonged growth of the ovulatory follicle and endocrine parameters
Published in Endocrinology (Philadelphia) (01-03-1993)“…In cattle, the development of ovarian follicles 5 mm or larger occurs in either two or three consecutive follicular waves per estrous cycle. When the luteal…”
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Development of Codominant Follicles in Cattle Is Associated with a Follicle-Stimulating Hormone-Dependent Insulin-Like Growth Factor Binding Protein-4 Protease
Published in Biology of reproduction (01-07-2001)“…Low molecular weight insulin-like growth factor binding proteins (IGFBPs), particularly IGFBP-4, are believed to inhibit the actions of insulin-like growth…”
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