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 56 for “"Female reproductive tract"”.
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Female Reproductive Tract Fluids and Their Influence on Capacitation of Bovine Spermatozoa
Uterine, oviducal and follicular fluids were analyzed for protein, steroids and metabolic substrates based on stage of the cycle and follicular size respectively. Uterine fluids contained more protein than oviducal fluids and pyruvate and lactate concentrations in both fluids showed an inverse …
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Influence of the female reproductive tract on the motility and morphological characteristics of ram spermatozoa
… of spermatozoa are deposited in the posterior female reproductive tract but only a few hundred reach the oviducts and from these only one will fertilise an oocyte in a mono-ovulatory species. Investigating why so few spermatozoa reach the oviduct and what was so special about these spermatozoa …
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Imagining the Internal Reproductive Environment: Function and Evolution of the Drosophila Melanogaster Female Reproductive Tract
… and potentially competition, among the reproductive cells, fluids, and structures of all individuals involved. For internally fertilizing species, these interactions occur within the body of one sex, predominantly the female, or ovary-associated, reproductive tract. Thus, characterizing …
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Tissue-Specific Mediation of Estrogen-Induced Epithelial Events by the Estrogen Receptor in Female Reproductive Tract Organs
… is present in both stroma and epithelium of female reproductive tract organs. Although, the epithelial response to E2 has been assumed to be mediated directly through epithelial ER, indirect mediation by stromal ER may be responsible. The estrogenic response in reproductive tissues may also …
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The influence of the hormonal milieu on eicosanoid and cytokine production in tissues from the female reproductive tract.
In the human uterus prostaglandins (PG) PGE2, PGD2, PGI2, PGF2¿ and Thromboxane A2 (TXA2), also termed prostanoids, are synthesised and deactivated to 15-keto PGE2, J2 metabolites, 6-keto-PGF1¿, 15-keto PGF2¿ and TXB2 respectively. However, not all metabolites have been analysed simultaneously …
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Influence of helminth infection on vaginal immunity
… sexually transmitted viral infections in the female reproductive tract, however the evidence is limited and the scope of helminth infection on immunity and infection in the female reproductive tract has not been fully elucidated. In this thesis the impact of hookworm infection on immunity in …
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Investigation of galactosyltransferase and α-lactalbumin-like proteins in mammalian reproductive tracts / by Yulu Tang
… GalTase is also present in luminal plasma of the female reproductive tract, where sperm capacitation and fertilization occur; and, whether GalTase is also the sperm's receptor for zona in other species than mouse.
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Genetic Regulation of Müllerian Duct Regression
… develop progenitor tissues for both male and female reproductive tract organs before they fully differentiate into a male or female tract. The progenitor tissue for the male reproductive tract is known as the Wolffian duct (WD), and the progenitor tissue for the female reproductive tract is …
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Novel method of selecting human spermatozoa for <em>In </em><em>Vitro </em>fertilization
… to get through the natural barriers of the female reproductive tract such as viscous cervical mucus, the uterus and into the fallopian tubes. The more spermatozoa are released into the vagina, and the more motile they are, the more spermatozoa will be able to penetrate through the cervical …
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Sperm Passage in the Female European Corn Borer, Ostrinia nubilalis (Hubner)
Mated and unmated female European corn borers raised in the laboratory were sacrificed and arbitrarily placed into two groups. The abdomens from one group were dissected and observed in saline. The abdomens from the second group were fixed, embedded in paraffin, and sectioned on a microtome. …
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IDENTIFYING THE INFLUENCE OF SELECTIVE EPISODES AND MECHANISMS ON REPRODUCTIVE SUCCESS IN TRIBOLIUM CASTANEUM AND DROSOPHILA MELANOGASTER
<p>Parsing out what makes some individuals more reproductively successful than others is a key pursuit in evolutionary biology. While reproductive success can ultimately be defined as the number of offspring produced over an individual’s lifetime, there are many selective episodes that shape this …
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What to Expect when Mice Are Expecting: Pregnancy-Driven Changes in the Reproductive Tract
… vaginal tearing, and pelvic organ prolapse. The female reproductive tract undergoes dramatic changes during pregnancy and postpartum recovery, requiring coordinated efforts across the vagina, cervix, and uterus. From an engineering perspective, we still do not know how much or why these forces …
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Male Influence on the Neuro-Endocrine Control of Egg Production in the Female Milkweed Bug, Oncopeltus fasciatus - Dallas
The reproductive activity of male and female milkweed bugs is characterized by repeated, prolonged copulations during the whole adult life. This investigation was conducted to determine whether mating has any effect on egg reproduction. Virgin females were maintained under the three following …
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Regulation of Survivin Gene Expression In The Human Endometrium and Endometrial Cancer
… endometrial cancer is the leading cancer of the female reproductive tract. There are 40,100 new cases and 7,470 deaths from endometrial cancer estimated for 2008 (47). The average five year survival rate for endometrial cancer is 84% however, this figure is substantially lower in patients …
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Investigation of differential TNFα-induced interleukin-6 gene regulation by synthesis progestins medroxyprogesterone acetate (MPA) and norethindrone acetate (NET-A) in human endocervical epithelial cells and the role of the unliganded glucocorticoid receptor
The endocervical mucosae of the female reproductive tract (FRT) not only serve as a physical barrier against microbial infection, but they also express a wide variety of immune mediators. The endocervical epithelial cells express a distinct profile of immune-regulators, which is higher than vaginal …
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Receptor-dependent phagocytosis of <i>Clostridium sordellii</i> by human decidual macrophages
… emerging pathogen associated with highly-lethal female reproductive tract (FRT) infections following childbirth, abortion, or cervical instrumentation. Gaps in our understanding of the pathogenesis of <em>C. sordelli</em>i infections present major challenges to the development of better …
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Hyperactivation of human sperm by 4-Aminopyridine: key role for mobilisation of stored Ca2+ in the sperm neck
Within the female reproductive tract mammalian sperm gradually develop hyperactivated motility, triggered by increased flagellar Ca2+ resulting in deep flagellar bends. Two sources of Ca2+ may contribute to the regulation of hyperactivation. Ca2+ influx at the plasma membrane is crucial and the …
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Morphology of the Internal Reproductive System of the Male and Female European Corn Borer Ostrinia Nubilalis (Hubner)
The gross morphology of the internal reproductive organs of the adult male and female European corn borer is described. The adults were laboratory reared progeny and descended from wild specimens collected in the Rochester area, Western N.Y. The male system displayed 2 major variations in the …
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Role of transient receptor potential channels in mammalian oviduct and uterine epithelia
… a critical role in uterine smooth muscle contraction and embryo implantation. This thesis is concerned with calcium homeostasis in epithelial tissue lining the oviduct and uterus which are key players in early reproductive events, being involved in gamete transport, sperm capacitation and …
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