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Articles 1 - 9 of 9
Full-Text Articles in Medicine and Health Sciences
Differences In Resting-State Functional Connectivity Of Chronic Migraine, With And Without Medication Overuse Headache, And The Effectiveness Of Sphenopalatine Ganglion Block As A Treatment For Repairing Dysfunctional Connectivity., Kaitlin Krebs
Theses and Dissertations
Chronic Migraine (CM) is a debilitating neurological condition that occurs when the migraine frequency progresses to a chronic state of more than 15 headache days per month. The overuse of analgesic medication (MOH) is one of the most prominent risk factor of this chronification and little is known about why it is a cause. The repetitive inhibition of the Sphenopalatine Ganglion is one promising treatment that is used to treat chronic migraine. The purpose of this study is to determine if a specific pattern of disruption is present for chronic migraine, both with and without medication overuse headache, and if …
The Identification Of The Direct And Indirect Pathways Through Which Leptin Facilitates Synaptic Plasticity In The Hippocampus, Catherine Van Doorn
The Identification Of The Direct And Indirect Pathways Through Which Leptin Facilitates Synaptic Plasticity In The Hippocampus, Catherine Van Doorn
Theses and Dissertations
Leptin, a peptide synthesized by adipocytes in the periphery, has been shown to play significant roles in feeding and energy expenditure mediated by the hypothalamus. Growing evidence supports the role of leptin in influencing synaptic plasticity in the hippocampus in that leptin dose-dependently enhances LTP, alters morphology and neurogenesis, facilitates spatial learning and memory, as well as memory retention. Models of leptin deficiency and resistance have further supported the importance of leptin in synaptic plasticity by exhibiting deficits in electrophysiological, morphological and behavioral tests that are improved after leptin restoration. The effects of leptin when applied directly into the hippocampus …
Morphogenic Effects Of Dopamine In Cultured Rat Hippocampal Astrocytes, Ashley L. Galloway
Morphogenic Effects Of Dopamine In Cultured Rat Hippocampal Astrocytes, Ashley L. Galloway
Theses and Dissertations
Dopamine is critical for processing of reward and addictive behaviors brought about by drugs of abuse. Scientific investigation of drugs of abuse and their effects on CNS function has traditionally been directed at understanding the role of neurons. However, astrocytes, which constitute approximately half of all human brain cells, play a dynamic role in many essential nervous system functions, including neurotransmission, ion homeostasis, and immune defense. Dopamine effects on astrocytes have been historically understudied, yet research indicates that astrocytes express dopamine receptors and are sensitive to dopaminergic activity. Importantly, astrocytes, comprise a morphologically heterogeneous population of cells, and a distinction …
The Role Of Epidermal Stem/Progenitor-Like Cells In Hpv-Mediated Pre-Neoplastic Transformation, Yvon L. Woappi
The Role Of Epidermal Stem/Progenitor-Like Cells In Hpv-Mediated Pre-Neoplastic Transformation, Yvon L. Woappi
Theses and Dissertations
The role of epidermal basal stem cells in dysplasia is a matter of great interest in the human papillomavirus (HPV)-driven cancers. To assess the relationship between “stemness” and HPV-mediated transformation, we made use of 3-D suspension culture and fluorescence activated cell sorting (FACS) to purify stem/progenitor-like cells from primary normal human keratinocyte (NHKc) cultures. We found that NHKc cells derived from multicellular keratinocyte spheroids were enriched for a basal subpopulation of epidermal stem-like cells, that could be maintained for prolonged time in culture and used to conduct transfection experiments with full-length HPV16 DNA. Thus, by using these stem cell enrichment …
Deciphering The Interacting Regions And Functions Of The Rad51d-Nono Protein Complex During Dna Damage Response, Latarsha Porcher
Deciphering The Interacting Regions And Functions Of The Rad51d-Nono Protein Complex During Dna Damage Response, Latarsha Porcher
Theses and Dissertations
Genomic instability is one of the major components represented in the “Hallmarks of Cancer.” DNA interstrand crosslinks and double-stranded breaks are two of the most severe causes of genomic instability. Homologous recombination (HR) plays a major role in resolving both types of DNA lesions, requiring a homologous template and the RAD51 paralog complex of proteins. One member of this complex is the RAD51D ovarian cancer susceptibility gene product. To better elucidate RAD51D modifications and functions, several protein interaction screens were performed, and one of the novel proteins identified was NONO (a.k.a. p54nrb). Decreased expression of either RAD51D or NONO conferred …
Regulation Of Chronic And Acute Inflammatory Disease By Microrna And Microbiota, Pegah Mehrpouya-Bahrami
Regulation Of Chronic And Acute Inflammatory Disease By Microrna And Microbiota, Pegah Mehrpouya-Bahrami
Theses and Dissertations
Inflammation is implicated in cancer development, degenerative diseases, allergies as well as artherosecelorsis. Dysregulated immune responses lead to chronic inflammation and tissue damage. Finding the ways to terminate inflammatory responses when no longer needed, demands further investigation. Herein, we investigated the modulation of acute and chronic inflammatory disease models by inducing antiinflammatory state. Acute inflammatory model was induced with SEB, an enterotoxin produced by a ubiquitous Gram-positive coccus, Staphylococcus aureus (S. aureus), which exerts profound toxic effects on the immune system, which leads to the cytokine storm and adverse immune response. SEB is the main cause of nosocomial infections, acute …
Probing Allosteric, Partial Inhibition Of Thrombin Using Novel Anticoagulants, Stephen S. Verespy Iii
Probing Allosteric, Partial Inhibition Of Thrombin Using Novel Anticoagulants, Stephen S. Verespy Iii
Theses and Dissertations
Thrombin is the key protease that regulates hemostasis; the delicate balance between procoagulation and anticoagulation of blood. In clotting disorders, like deep vein thrombosis or pulmonary embolism, procoagulation is up-regulated, but propagation of clotting can be inhibited with drugs targeting the proteases involved, like thrombin. Such drugs however, have serious side effects (e.g., excessive bleeding) and some require monitoring during the course of treatment. The reason for these side effects is the mechanism by which the drugs’ act. The two major mechanisms are direct orthosteric and indirect allosteric inhibition, which will completely abolish the protease’s activity. Herein we sought an …
Understanding And Targeting The C-Terminal Binding Protein (Ctbp) Substrate-Binding Domain For Cancer Therapeutic Development, Benjamin L. Morris
Understanding And Targeting The C-Terminal Binding Protein (Ctbp) Substrate-Binding Domain For Cancer Therapeutic Development, Benjamin L. Morris
Theses and Dissertations
Cancer involves the dysregulated proliferation and growth of cells throughout the body. C-terminal binding proteins (CtBP) 1 and 2 are transcriptional co-regulators upregulated in several cancers, including breast, colorectal, and ovarian tumors. CtBPs drive oncogenic properties, including migration, invasion, proliferation, and survival, in part through repression of tumor suppressor genes. CtBPs encode an intrinsic dehydrogenase activity, utilizing intracellular NADH concentrations and the substrate 4-methylthio-2-oxobutyric acid (MTOB), to regulate the recruitment of transcriptional regulatory complexes. High levels of MTOB inhibit CtBP dehydrogenase function and induce cytotoxicity among cancer cells in a CtBP-dependent manner. While encouraging, a good therapeutic would utilize >100-fold …
Methcathinone Analogue Activity At The Human Serotonin Transporter, William Drake Varn
Methcathinone Analogue Activity At The Human Serotonin Transporter, William Drake Varn
Theses and Dissertations
In the last few years, there has been continued concern about synthetic drug abuse in both the United States and worldwide. Small adjustments in drug compound structure often allow synthetic drug makers to manufacture a legal product that can produce the same highs as illegal counterparts. Unfortunately, this is happening faster than the government can outlaw the drug compounds, and a wide variety of synthetics are now appearing on the street. This study evaluated the effects on the human serotonin transporter of six different 4-para substituted methcathinone compounds. Using a Xenopus oocyte model, the efficacy of each MCAT analogue …