Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"ovarian function"”.
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Effects of Hyperadrenalism on Bovine Ovarian Function
Effects of hyperadrenalism on bovine ovarian function were studied by using 25 intact heifers treated with ACTH or saline (S) and 33 adrenalectomized (ADRX) heifers treated with ACTH, hydrocortisone succinate (HS), progesterone (P) or S and bovine pituitary cells in culture. All ADRX animals were …
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G Protein and Androgen Signaling in Ovarian Function
… Here, we characterized the signaling and functional properties of GPR3 by using the more amenable model system of Xenopus laevis oocytes. We cloned the Xenopus laevis isoform of GPR3 (XGPR3) from oocytes and showed that overexpressed XGPR3 elevated intra-oocyte cAMP, in large part due to …
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Rescue of ovarian function: stem cells and regenerative factors
… acquired damaging conditions lead to impaired ovarian function. Nevertheless, even when the ovaries lose their ability to ovulate, they might contain a residual pool of quiescent follicles that could be rescued. Soluble factors secreted by stem cells could provide an adequate ovarian …
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The Effects of a GnRH Antagonist, Cetrorelix, on Ovarian Function in Cattle
… days after cetrorelix treatment to assess luteal function. In all cetrorelix-treated heifers, dominant follicle regression occurred, and a new follicular wave emerged consistently 5.8 ± 0.3 days after treatment. There was a tendency for cetrorelix to reduce the diameter of the corpus luteum (CL), …
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Priming with Oral Progestin Before Ovulation Induction Facilitates Ovarian Function in the Cat (Felis catus)
… This failure has been attributed to variable ovarian status at the time of insemination and adverse residual effects caused by exogenous gonadotropins used to induce ovulation. Using the domestic cat as a research model, a new AI regimen that incorporated short-term ovarian suppression with …
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Endocrine markers of ovarian function: Clinical and biological aspects with focus on Anti Müllerian hormone
… closely related to female fertility is the ovarian reserve, a term used to designate both quantitative as well as qualitative aspects of the remaining gametes in the female gonads. Despite a natural age-dependent decline in terms of the amount of gametes, a substantial variability exists …
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Role of conceptus-induced vasodilation in controlling utero-ovarian function of ewes, cows and sows
… secreted from the gravid uterus, may reduce the function of periarterial sympathetic vasoconstrictor nerves (PSVN), resulting in transient increases in uterine and overian blood flow (BF) previously observed on days critical for maintenance of corpora lutea (CL) in cows and sows. Experiment I: …
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The Impact of Reduced Ovarian Function and Its Consequences on Young Women Survivors of Breast and Gynecologic Cancer
… associated with the consequences of reduced ovarian functioning and estrogen depletion experienced by many young women cancer survivors. One hundred and eighteen women aged 50 or less and diagnosed with stage 0-III breast or gynecologic cancer were recruited for a one-time interview …
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Investigating mechanisms of ovotoxicity of Perfluorooctanoic acid and Zearalenone exposure and the influence of altered metabolic status on ovarian function
… major roles of the ovary, leading to premature ovarian failure and infertility. Obesity has several negative reproductive effects in women, and in female mice, mechanistic studies have discovered that obesity decreases the number of primordial follicles, alters steroidogenesis and …
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Characterization of Microrna Expression Profiles and Role of Nodal-Related Genes in Zebrafish Ovarian Follicles
… In zebrafish, early vitellogenic (stage IIIa) ovarian follicles are maturationally incompetent while mid-late vitellogenic (stage IIIb) follicles are able to undergo oocyte maturation in response to maturation-inducing hormone signals. Signaling molecules derived from the ovary, such as …
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Factors That Enhance Pituitary and Ovarian Functions in Postpartum Beef Cows (Naloxane, Gn-Rh, Pgf(2), Indomethacin)
… or in combination and influence pituitary and ovarian function postpartum. The studies in this dissertation address some of the factors and suggest some treatments that maybe employed in order to increase the percentage of cows that produce a calf every year under actual farm settings.
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Prenatal exposure to di-(2-ethylhexyl) phthalate and high-fat diet synergistically disrupts mouse fetal oogenesis and affects folliculogenesis
… medical procedures. Exposure to DEHP alters ovarian function in humans. Additionally, foods high in fat content, regularly found in the western diet, are potential disruptors of fetal ovarian function. Due to DEHP’s high lipophilicity, high-fat foods can be easily contaminated with DEHP. …
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Interaction of growth hormone and insulin-like growth factor-I in the control of steroidogenesis by cultured porcine granulosa cells
… understand the factors controlling or modulating ovarian function, and in an attempt to develop a way to increase ovulation rate in gilts, the effects of metabolic hormones such as growth hormone (GH), insulin or prolactin and growth factors such as insulin-like growth factor I or II (IGF-I or …
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Hormonal regulation of microRNA expression in the ovary
… interplay between hormone action and biological function is critical for furthering our knowledge of fertility and reproductive health. For decades, research has been conducted on understanding the transcriptional regulation of ovarian gene expression and how this relates to reproductive …
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Primary Sex Reversal in Female <em>Betta splendens</em> following Treatments with Temperature and Trenbolone Acetate.
… staining, sections were observed for signs of ovarian regression, as well as signs of testicular formation. The presence of TBA significantly reduced the size of the gonad and the number and size of vitellogenic oocytes, indicating a loss of ovarian function. Temperature had a synergistic …
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Histerektomijos įtaka ankstyvojo kiaušidžių nepakankamumo rizikai. Mokslinės literatūros apžvalga /
… impact of hysterectomy on the risk of premature ovarian failure. It will broadly discuss ovarian function - folliculogenesis and endocrine function, the hormones produced and their impact on the female body systems, not limited to the reproductive system. Ovarian failure (menopause) - normal, …
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MICRORNA EXPRESSION WITHIN PERIOVULATORY MURAL GRANULOSA CELLS
Normal ovarian function is an important aspect of reproductive health, and loss of this function can have drastic consequences including infertility as well as an increased risk for diseases like ovarian cancer. The ability to initiate and maintain a pregnancy is dependent on the regulation of …
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Sex-specific reproductive strategies in redfronted lemurs (Eulemur fulvus rufus, Primates, Lemuridae)
… endocrine measurements for monitoring ovarian function in wild redfronted lemur females in order to evaluate the degree of estrus synchrony. Further, I tested the prediction that males living in multi-male groups rely on indirect mechanisms of intrasexual competition, such as …
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Prevalence of Premature Ovarian Failure In Women With Tuberous Sclerosis
… cause most cases of TSC. Recently, the use of ovarian specific conditional knock-out mouse models has demonstrated a crucial role of the TSC genes in ovarian function. Mice with complete deletion of <em>Tsc1</em> or <em>Tsc2</em> showed accelerated ovarian follicle activation and subsequent …
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Investigating the role of PABPC5 in mouse physiology
… to other PABPs, but little is known about its function. PABP5 resides in the gene-poor region of Xq21.3 and published data has identified a patient with premature ovarian insufficiency (POI) carrying a deletion in this region, suggesting a possible link between POI and PABP5. Premature ovarian …
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