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 32 for “"cyclic adenosine monophosphate"”.
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Characterisation of cyclic adenosine monophosphate/protein kinase A signalling networks in blood platelets
… actions remains unclear beyond the triggering of cyclic nucleotides signaling pathways. The aim of this study was to improve our understanding of platelet regulation by cAMP signaling networks.We observed differences in cAMP signaling depending on the agonists used. Using phosphorylation of PKA …
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Modulation of cyclic adenosine monophosphate (cAMP) signalling and its therapeutic potential: pharmacological characterisation of PDE inhibitors
The alteration of intracellular cyclic adenosine monophosphate (cAMP) levels plays important regulatory roles in both physiological and pathological conditions, such as cancer. As the most aggressive form of brain tumour, glioblastoma is currently incurable due to limited treatment modalities. Low …
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Interrelationships among estrogen, insulin-like growth factor-I and cyclic adenosine monophosphate in the regulation of uterine progesterone and estrogen receptors
Studies were undertaken to examine regulation of progesterone receptor gene expression and estrogen receptor bioactivity in uterine cells, and to determine the cellular mechanisms through which various factors mediate regulation of these receptor proteins. Exposure of uterine cells maintained in …
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Direct Measurements of the Effects of Cyclic Adenosine Monophosphate, and Related Compounds, on Membrane Conductances, Intracellular Calcium and Ph in Gastropod Neurons (cyclic-Amp)
… effects of intracellular injections of cyclic adenosine monophosphate (AMP) and related compounds were examined in identifiable gastropod neurons. Injecting cyclic AMP (or cyclic GMP) in amounts which should have elevated the internal concentration from 0.1-7.6 mM (mean = 3.3 mM) …
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THE EFFECT OF SKELETAL MUSCLE-SYNTHESIZED BDNF ON MOTOR NEURON SOMA SIZE AND BDNF PROTEIN ABUNDANCE
… neuron soma, the BDNF/TrkB complex activates cyclic Adenosine Monophosphate (cAMP) response element binding protein (CREB), leading to transcriptional changes that support neuron dendrite growth and survival. Using a skeletal muscle-synthesized BDNF deficient mouse model, this thesis aims to …
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The role of reactive nitrogen species and aged garlic extract on platelet function
… targets within platelets, including calcium and cyclic adenosine monophosphate (cAMP). The effect of AGE upon the other cyclic nucleotide, cyclic guanosine monophosphate (cGMP) is currently unknown. The aims therefore of this project are to identify the effect of AGE upon platelet cGMP, as well …
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In vitro progesterone and estrone synthesis by the porcine placenta and endometrium at 30, 60 and 90 days of gestation
… human chorionic gonadotropin (hCG) and 3' 5', cyclic adenosine monophosphate ( cAMP) on porcine placental and endometrial production of progesterone (P₄), testosterone (T) and estrone (E₁) at 30, 60 and 90 days of gestation. Duplicate 300 mg samples of placenta, endometrium or both …
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The MA-10 Cell Line as a Model of insl3 Regulation and Leydig Cell Function
… in response to luteinizing hormone (LH) via the cyclic adenosine monophosphate (cAMP)/protein kinase A pathway. Additionally, these cells are responsible for producing insulin-like peptide 3 (INSL3), a peptide hormone that is essential for testicular descent. The <em>insl3</em> promoter in Leydig …
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Evaluating luteinizing hormone receptor signaling using the cyclic AMP reporter ICUE3
… activation of G proteins. Evaluating the cyclic adenosine monophosphate (cAMP) level in response to binding of ligand to LH receptors depends on activation of adenylyl cyclase by G proteins and production of cAMP. In this project, fluorescence resonance energy transfer (FRET) methods were …
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Post-translational modifications regulate β2-Adrenoceptor signaling in cardiac myocytes
… activation of the classic Gs-adenylate cyclase-cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) signaling pathway. In the mammalian heart, increasing cAMP-PKA activity leads to phosphorylation of an array of proteins involved in increasing heart contractility and rate. β2AR also has …
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Mechanisms Mediating Adaptive Presynaptic Muting Induction
… G-protein signaling induced silencing through cyclic adenosine monophosphate: cAMP) reduction but surprisingly not via activation of likely candidate receptors. This cAMP reduction contributed to loss of proteins important for vesicle fusion at the presynaptic terminal. I also found that …
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Understanding HNF-1β through Identification of Interacting Proteins and Target Genes in the Kidney
… that control the intracellular concentration of cyclic adenosine monophosphate (cAMP) by catalyzing its hydrolysis. cAMP may play a role in cystogenesis by stimulating fluid secretion and cell proliferation. PDE4C is transcriptionally activated by HNF-1Beta and regulates cAMP levels in mIMCD3 …
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Exploring INSL5 and RXFP4 in the gut-brain axis and their potential role in feeding behaviour
… with feeding. By combining Rxfp4-Cre mice with a cyclic adenosine monophosphate (cAMP) imaging technique, INSL5 was found to reduce intracellular cAMP levels in Rxfp4-expressing cells in the colon, DRG, NG and the ventromedial hypothalamus (VMH), a known feeding centre in the brain. Transcriptomic …
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Regulation of cAMP Signalling to Phospholemman by Phosphodiesterases
The ubiquitous second messenger molecule, cyclic adenosine monophosphate (cAMP), regulates a multitude of cellular functions, with Protein Kinase (PK)A being the major effector of its actions. There is increasing evidence to suggest that phosphodiesterases (PDEs), a class of enzymes that …
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Synovial Fibrosis in Osteoarthritis of the Knee: Mechanism of Development and Potential Therapeutic Targets
… and study the impact of increasing intracellular cyclic adenosine monophosphate (cAMP) in OA fibroblast-like synoviocytes (OA-FLS) on regulating TGF-β linked expression of fibrotic genes and the contribution of PRG4 and HA to this effect. Also, we studied the significance of PRG4-CD44 interaction …
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Regulation of duodenal mucosal bicarbonate secretion
… It was determined that dibutyryl 3' ,5'-cyclic adenosine monophosphate, vasoactive intestinal polypeptide, prostaglandin E2, carbachol and theophylline are the chief agonists of duodenal bicarbonate secretion. Vasoactive intestinal polypeptide and prostaglandin E2 act directly via …
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Mechanisms controlling in vitro progesterone synthesis by the ovine placenta
… human Chorionic Gonadotropin (hCG), 3’, 5', cyclic adenosine monophosphate (cAMP), luteinizing hormone-releasing hormone (LHRH) or no additional treatment. Progesterone concentration in the medium after incubation were determined by radioimmunoassay. The temporal pattern of in vivo …
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Modulation of the aquaporin-2 localization in renal principal cells
… elevated levels of the second messenger 3’,5’-cyclic adenosine monophosphate (cAMP) and the activation of the cAMP-dependent protein kinase (protein kinase A, PKA), the water channel aquaporin-2 (AQP2) is redistributed from intracellular vesicles into the plasma membrane of renal collecting …
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G-Protein-Coupled Estrogen Receptor-1 (GPER): A Potential Target For Xenoestrogens During Vertebrate Embryogenesis.
… of GPER. Based on these studies, we found that cyclic adenosine monophosphate and nitric oxide were involved in mediating G-1-induced toxicity whereas mitogen-activated protein kinase (MAPK) [but not phosphatidyl-inositol 3-kinase (PI3K)] and epidermal growth factor receptor (EGFR) played a …
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Directed Cell Migration: From Single Cells to Collectively Moving Cell Groups
… concentration gradient of the signaling molecule cyclic adenosine monophosphate (cAMP). The collective migration model shows that the pattern of migration can be quantitatively described by considering the competition of two processes, the secretion of cAMP by the cells and the degradation of cAMP …
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