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 104 for “"luteal"”.
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INFLUENCE OF BIOGENIC AMINES ON BOVINE LUTEAL STEROIDOGENESIS
… and biogenic amines in the control of bovine luteal steroidogenesis, studies were conducted utilizing collagenase-dispersed luteal cells in a short-term incubation system. Studies designed to assess the role of catecholamines showed that the stimulatory response to the primary catecholamines …
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Studies on the Luteal Function in the Late Pregnant Cow
… PGF2a, PGFM and LH concentrations. In vitro luteal function was not affected by estrone infusion. However, maximal luteal response was correlated with pre-infusion concentrations of conjugated estrogens suggesting a negative association between endogenous conjugated estrone and luteal …
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Late luteal phase dysphoric disorder symptoms (PMS) among women presenting for counseling services
… and distress experienced by women during the luteal phase of the cycle as opposed to the follicular phase. This study collected descriptive profiles of current mood states, physiological symptoms, and menstrual cycle information from 62 women on the day on which they presented to a university …
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Evidence for a systemic embryotoxic effect of early luteal regression in the ewe
… progesterone-supplemented ewes, and embryotoxic luteal products have been shown to act by non-local pathways.
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DEVELOPMENT OF A CULTURE SYSTEM FOR BOVINE LUTEAL CELLS: EXAMINATION OF LUTEOTROPIC AND LUTEOLYTIC MECHANISMS
<p>The function of bovine luteal cells in tissue culture was examined. Corpora lutea from regularly cycling dairy cows were dissociated with collagenase and cultured in Ham's F-12 medium with or without serum. The serum-free medium was supplemented with insulin, transferrin and hydrocortisone. …
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Low-fat diet vs. education support in the treatment of late luteal phase dysphoric disorder
… of premenstrual tension syndrome (PMS) or Late Luteal Phase Dysphoric Disorder (LLPDD). Subjects met provisional diagnostic criteria for LLPDD and symptoms were monitored prospectively. A low-fat diet was hypothesized too be an effective intervention for reducing the severity of both physical …
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Clinical and endocrine responses to ovarian hyperstimulation in flare and and luteal gonadotropin-releasing hormone agonist (GnRHa) protocols
… in follicle response as compared to the luteal protocol which is based on maximal pituitary suppression and synchronization of follicular maturation. In this study, besides other methods, Anti-Mullerian Hormone (AMH), a novel marker for ovarian reserve, was used as a tool to evaluate the …
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Effect of ovulatory follicle size on luteal function, pregnancy rate, and late embryonic/fetal mortality in beef cattle
Previous reports indicate that ovulation of small dominant follicles resulted in reduced pregnancy rates compared ovulation of large follicles in cattle. A reciprocal embryo transfer approach was used to differentiate between oocyte competence and uterine environment factors that affect …
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Treatments to Induce and Control Ovulations and Reduce the Incidence of Abnormal Luteal Phases in Postpartum Suckled Beef Cows
… by gonadotropin releasing hormone (GnRH) but the luteal phase following that ovulation is generally six to twelve days long. It was hypothesized that the presence of a luteolytic compound (prostaglandin F(,2)(alpha)) and the duration of the GnRH-induced LH surge are causes of the abnormal luteal …
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ROLE OF OXYTOCIN AND OXYTOCINASE IN THE MATERNAL RECOGNITION OF PREGNANCY
This thesis involved the investigation of luteal, endometrial and embryonic putative gene regulators in the maternal recognition of pregnancy in the horse, with an emphasis on understanding the role of oxytocin and oxytocinase in early pregnancy. The first objective was to validate the safety and …
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Effect of 6α-methyl-17α hydroxyprogesterone acetate on uterine secretion of prostaglandin (PG) F₂α and luteal sensitivity to exogenous PGF₂α
… by which MPA suppresses PGF₂α and permits luteal regression remains to be determined. Three experiments were conducted to determine whether MPA reduces PGF₂α in uteroovarian blood, causes the release of PGF₂α before d 14 of the estrous cycle, or increases sensitivity of corpora lutea (CL) …
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The Influence of Hormonal Fluctuation on Stress-Induced Smoking Cravings in Women
… Increased smoking has been observed in the late luteal phase of the menstrual cycle and the current study aimed to clarify the role that changes in reproductive hormones may play in explaining these cycle effects. Furthermore, it tested the hypothesis that stress-induced smoking cravings are more …
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The Effects of Mindful Meditation on Body Image in Female Collegiate Athletes During the Late Luteal and Early Follicular Phases of the Menstrual Cycle
… intervention on body image during the late luteal and early follicular phases of the menstrual cycle in collegiate female athletes. Eight female collegiate athletes (age: 20.5 ± 1.8 years, height: 1.7 ± 0.1 m, weight: 62.4 ± 8.9 kg, body fat: 26.4 ± 6.9%) participated in both the control and …
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Porcine intrauterine steroidogenesis: luteal vs. intrauterine progesterone as a mediator of prenatal survival, conceptus development and in vitro steroid production by the placenta and endometrium
This investigation is a series of four experiments that examine the role of intrauterine steroidogenesis in the pregnant gilt. In chapter 3, ovariectomy (OVX) and medroxyprogesterone acetate (MPA) treatment at two stages of gestation (d19-29 or d59-69) resulted in maintained pregnancy, normal fetal …
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Expression, activation, and regulation of matrix metalloproteinase 2 (MMP-2) in the bovine corpus luteum
… to explore the regulation of MMP-2 expression in luteal and endothelial cells by cytokines. Molecular cloning and sequence analysis demonstrated that the bovine MMP-2 and MT1-MMP genes are highly similar to their homologs in other species. Although the levels of MMP-2 and MT1-MMP transcripts were …
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The effect of the menstrual cycle on hemoglobin mass
… during the follicular phase when compared to the luteal phase of the menstrual cycle. Changes in plasma volume associated with fluctuating estrogen and progesterone levels likely contribute to the variations in hemoglobin concentration observed throughout the menstrual cycle. Thus, measures of …
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Prostaglandins Modulate the Uterine Response to Infectious Bacteria in Postpartum and Estrous Cyclic Ewes
… (P < .05). Cyclic ewes in their follicular or luteal phase received either intrauterine inoculations of saline or bacteria, vena caval blood was collected for 3 d, and uteri were collected. Lymphocytes were incubated with mitogens, PGE2 (Exp. 2), PGF2alpha (Exp. 3) and(or) INDO in a 3 x 2 x 2 …
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Studies of the mammalian ovarian endothelin system
… role during prostaglandin (PG) F2 alpha-induced luteal regression in the cow. Effects of PGF2 alpha treatment were examined during early and mid-luteal phases on ECE-1, ETA and ET-1 of bovine corpora lutea (CL). Semi-quantitative reverse transcriptase polymerase chain reaction was used to …
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