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Showing 1 to 20 of 62 for “"Steroidogenesis"”.
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Regulation of Adrenal Steroidogenesis by Interleukin-6
Cortisol and dehydroepiandrosterone (DHEA) are steroids produced by the zona fasciculata (ZF) and reticularis (ZR), respectively, of the adrenal cortex. Both steroids are upregulated in response to adrenocorticotropic hormone (ACTH). Cortisol is a glucorticoid that is important in the regulation of …
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INFLUENCE OF BIOGENIC AMINES ON BOVINE LUTEAL STEROIDOGENESIS
… 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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The Role of EGFR Signaling in Gonadotropin-Induced Steroidogenesis
… Growth Factor Receptor (EGFR) is critical for steroidogenesis in all three major steroid-producing tissues. We have recently characterized the intracellular signals regulating Luteinizing Hormone (LH) -induced steroid production in Leydig cells, demonstrating a linear pathway whereby LH …
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In Vitro Steroidogenesis by Ovarian Follicular Cells of Hens
Made available in DSpace on 2014-12-13T19:42:47Z (GMT). No. of bitstreams: 1 7820971.pdf: 5289575 bytes, checksum: 00da2b0faa6b1c140f7591bdb41bf89f (MD5) Previous issue date: 1978
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Ire1 regulates cyp11a1 transcription to mediate steroidogenesis in the ovary
… IRE1 represents a novel mechanism regulating steroidogenesis.
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EGFR Signaling Is Necessary for Gonadotropin-Induced Steroidogenesis and Oocyte Maturation
… critical for normal female fertility, including steroidogenesis, oocyte maturation, and subsequent ovulation. Studies were designed to examine the LH-induced signaling pathways that regulate ovarian steroidogenesis, as well as the subsequent role of steroids and their receptors on oocyte and …
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Studies of the Mechanisms of Ovulation and Steroidogenesis in the Rabbit
Made available in DSpace on 2014-12-11T22:22:25Z (GMT). No. of bitstreams: 1 7414514.pdf: 3317691 bytes, checksum: 0f38b456fbf97f1edf0436168b625de7 (MD5) Previous issue date: 1974
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Equol inhibits growth, induces atresia, and inhibits steroidogenesis of mouse antral follicles
… growth, increases follicle atresia, and inhibits steroidogenesis in the adult mouse ovary. Ovarian antral follicles from adult CD-1 mice were cultured with vehicle control or equol (600 nM, 6 µM, 36 µM, 100 µM) for 48 and 96 h. Follicle diameters were measured every 24 h to monitor follicle …
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Effects of intrauterine dynamics on steroidogenesis and conceptus development in the porcine
… position on placental and endometrial steroidogenesis at various days of gestation.
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Gonadal histology and reproductive steroidogenesis of anurans exposed to potential endocrine disrupting contaminants
… development, gonadal histology and reproductive steroidogenesis of larval anurans.</p><p>As previous monitoring at Great Bay National Wildlife Refuge (NWR), Newington, New Hampshire documented incidences of amphibian malformations at four sites contaminated with potentially endocrine active …
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The Effects of Actinomycin D and Acth on Circadian Steroidogenesis of Hamster Adrenals
Rhythmicity is predominant in nature. Sunrise is followed by sunset in a highly predictable periodic sequence. Living organisms are known to be influenced by such periodically occurring phenomena. De Mairan, as early as 1729, observed leaf movements of plants and found these variations to be …
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Follicle stimulating hormone and steroidogenesis in ovarian granulosa cells during aging in the domestic hen
There is a decreased rate of follicular maturation with age in the domestic hen. The time required for follicular growth increases, while the number of growing follicles decreases. The causes for this physiological change with age are not defined. Perhaps there are changes with age in the …
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The Effects of Aqueous Atorvastatin on Steroidogenesis of <i>Xenopus laevis</i> at Environmentally Relevant Concentrations
… because of the potential to interfere with steroidogenesis in wildlife. Amphibians may be particularly susceptible to the effects of atorvastatin contamination because of their highly permeable integument. I used an amphibian model, <em>Xenopus laevis</em> to test the hypothesis that chronic …
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Mechanisms by which di(2-ethylhexyl) phthalate and mono(2-ethylhexyl) phthalate disrupt ovarian folliculogenesis and steroidogenesis
… normal ovarian function are folliculogenesis and steroidogenesis. Follicles are the functional units of the ovary containing the oocyte required for ovulation and fertilization and somatic cells responsible for synthesizing sex steroid hormones. Folliculogenesis is the process by which follicles …
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Interaction of growth hormone and insulin-like growth factor-I in the control of steroidogenesis by cultured porcine granulosa cells
… growth factor I or II (IGF-I or IGF-II) on steroidogenesis in cultured porcine granulosa cells were investigated with emphasis on the interaction between GH and IGFs. Experiment one was conducted to examine the influence of metabolic hormones and growth factors on progesterone and estradiol …
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Mechanism of Bisphenol A toxicity in adult mouse ovarian antral follicles
… processes such as ovarian follicle growth and steroidogenesis. Follicles are the functional units of the ovary, responsible for ovulating an oocyte and producing sex steroid hormones during steroidogenesis. Follicles grow and develop from primordial, primary, pre-antral, and finally, to antral …
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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
… 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 survival rates, normal conceptus …
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Expression of DIO2 in the Porcine Ovary and the Granulosa Cells of Humans
… of the ovary are production of gametes and steroidogenesis. Ovarian follicles are the functional component of the ovary and respond to hormonal changes in the body during reproductive cycles. As follicles develop, the somatic cells of the ovary differentiate into granulosa cells and theca …
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Regulation of Estradiol-17beta Synthesis by Small Follicles of the Domestic Hen Ovary
… functions in the domestic hen. Although steroidogenesis in preovulatory follicles has been studied extensively, regulation of steroidogenesis in small follicles has received little attention. Therefore, the aim of my dissertation was to investigate the regulation of E$\sb2$ synthesis by …
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