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Articles 1 - 10 of 10
Full-Text Articles in Cell and Developmental Biology
Increased Glutathione Metabolic Defense Capabilities In Cultured Alzheimer's Diseased Lymphoblast Cell Lines, Collin M. Shaw
Increased Glutathione Metabolic Defense Capabilities In Cultured Alzheimer's Diseased Lymphoblast Cell Lines, Collin M. Shaw
Dissertations and Theses
The hypothesis to be tested states that the pathology of Alzheimer's disease (AD) involves elevated levels of oxidative stress, resulting in elevated levels of cellular oxidative defense mechanisms. If the premise is true, than AD pathologically afflicted cells should have a higher demand for glutathione (GSH) as an innate oxidative defense mechanism hence; greater GSH concentrations, increased GSH resynthesis capabilities, and increased levels of cystathionine gamma-lyase (CNase). Alzheimer diseased and age matched control lymphoblast cells, obtained from OHSU's Oregon Brain Aging Study, were cultured, and GSH biochemistry was subsequently evaluated. GSH was depleted by exposing cells to the GSH depleting …
Efficacy Of AllowashTm Solution In Solubilization Of Bone Marrow, Alyce Marie Linthurst
Efficacy Of AllowashTm Solution In Solubilization Of Bone Marrow, Alyce Marie Linthurst
Biological Sciences Theses & Dissertations
LifeNet currently cleans allograft bone utilizing AllowashTM Technology, which encompasses the use of a closed continuous circulation chamber to remove bone marrow by flushing it with AllowashTM Solution for a prescribed time and temperature after which, it is rinsed with various solutions to remove residual detergent that could be toxic to the recipient. A portion of this process employs AllowashTM Solution to improve the solubilization and removal of protein and cellular elements in the red bone marrow. This study examines the effectiveness of AllowashTM Solution in comparison to its component detergents Nonidet P40, Nonoxynol 9 and …
Leukemia Inhibitory Factor (Lif): Murine Preimplantation Embryo Development, Implantation Rates, And Skeletal Development, Michael Hayes Mitchell
Leukemia Inhibitory Factor (Lif): Murine Preimplantation Embryo Development, Implantation Rates, And Skeletal Development, Michael Hayes Mitchell
Theses and Dissertations in Biomedical Sciences
Leukemia inhibitory factor (LIF) is a pleiotropic cytokine which demonstrates perplexing physiological effects. It has been demonstrated that LIF is essential for implantation in mice. Little is known relating to the manner by which LIF effects pre-implantation and post-implantation development. The objectives of this project were to determine the effects LIF on pre-implantation development, to determine the effects that it may have on implantation rates, successful pregnancy rates, and resorption rates, and to determine the effects that LIF has on the skeletal development of mice. For the embryo transfer experiments, embryos were exposed to test compounds in the transfer medium …
Molecular Staging Of Colorectal Cancer: K-Ras Mutation Analysis Of Lymph Nodes Upstages Dukes’ B2 Patients, Jennifer S. Thebo
Molecular Staging Of Colorectal Cancer: K-Ras Mutation Analysis Of Lymph Nodes Upstages Dukes’ B2 Patients, Jennifer S. Thebo
Dissertations
The successful treatment of colorectal cancer depends upon the ability of staging systems to identify patients who are at risk for recurrence. The currently used systems fail in a significant number of patients. Multiple attempts have been made to improve upon these systems in order to provide better treatment for at-risk patients.
A variety of oncogenes and tumor suppressor genes have been implicated in colorectal cancer. Mutations in one of these, K-ras, occur in 40-60% of colorectal carcinomas. However, the relationship between specific mutations and clinical outcome is unclear.
The purpose of this study was to determine whether or not …
Pressure-Induced Intracellular Signaling In Isolated Arteries, Victor A. Miriel
Pressure-Induced Intracellular Signaling In Isolated Arteries, Victor A. Miriel
Theses and Dissertations in Biomedical Sciences
The ability of cells to respond to mechanical stimuli has been studied through a variety of techniques in numerous cell types. The cells of the vascular wall have adapted to specific mechanical stresses through the activation of intracellular signaling pathways which result in cell-specific responses such as hypertrophy, hyperplasia, proliferation, and migration. Vascular smooth muscle of the arteries have been shown to be sensitive to mechanical stimuli such as stretch, and pressure.
This study attempts to add to the current knowledge of mechanotransduction by utilizing the isolated artery preparation. This preparation allows for the study of vascular smooth muscle signal …
Reaction-Diffusion Models Of Cancer Dispersion, Kim Yvette Ward
Reaction-Diffusion Models Of Cancer Dispersion, Kim Yvette Ward
Mathematics & Statistics Theses & Dissertations
The phenomenological modeling of the spatial distribution and temporal evolution of one-dimensional models of cancer dispersion are studied. The models discussed pertain primarily to the transition of a tumor from an initial neoplasm to the dormant avascular state, i.e. just prior to the vascular state, whenever that may occur. Initiating the study is the mathematical analysis of a reaction-diffusion model describing the interaction between cancer cells, normal cells and growth inhibitor. The model leads to several predictions, some of which are supported by experimental data and clinical observations $\lbrack25\rbrack$. We will examine the effects of additional terms on these characteristics. …
The Role Of Glycoconjugates In Mediating Human Fertilization And Induction Of Fetomaternal Tolerance, Manish S. Patankar
The Role Of Glycoconjugates In Mediating Human Fertilization And Induction Of Fetomaternal Tolerance, Manish S. Patankar
Theses and Dissertations in Biomedical Sciences
Using the hemizona assay (HZA), a in vitro sperm-egg binding assay, we show that specific glycoconjugates known to inhibit immune cell interactions mediated by the selectins, potently block human sperm-egg binding. The selectin ligand sialyl Lewisx inhibits sperm binding in the HZA by 60% at a concentration of 1 mg/ml. Our data indicates that glycodelin-A, a endometrial glycoprotein known to block sperm-egg binding in the HZA at low concentrations expresses unusual fucosylated lacdiNAc type glycans. The fucosylated lacdiNAc type sugars have been previously shown to be 15-20 fold more potent ligands of E-selectin. Glycodelin-S a seminal plasma glycoform of …
The Role Of Domain I In Laminin Chain Assembly, George D. Kamphaus
The Role Of Domain I In Laminin Chain Assembly, George D. Kamphaus
Theses, Dissertations and Capstones
Laminin, a major component of basement membrane, is a trimeric glycoprotein comprised of three chains - α, β and γ (Burgeson et al., 1994). An order for trimer assembly has been deduced: first, the β and γ chains bind to form a dimer and subsequently α is added to complete the trimer (I. Hunter et al., 1990 & 1992; Utani et al., 1994 & 1995). The C-terminal portions, found within the protein structural domain I of the p and y chains, are implicated in dimer and trimer formation by biochemical studies performed extracellularly (Utani, et al., 1994 & 1995; Nomizu …
Molecular Mapping Of The Fatty (F) (Formerly Corpulent) Gene In The La/N Rat Obesity Model, Kenneth G. Butz
Molecular Mapping Of The Fatty (F) (Formerly Corpulent) Gene In The La/N Rat Obesity Model, Kenneth G. Butz
Theses, Dissertations and Capstones
The LA/N-corpulent (cp) rat obesity model was a congenic rat strain developed at the National Institutes of Health by C. T. Hansen . The LA/N-cp rat originated from breeding the Koletsky rat, possessing the corpulent gene, with the normotensive LA/N inbred rat. The autosomal recessive single gene mutation, cp, produces obesity with hyperphagia, hyperinsulinemia and elevated activities of liver and skeletal muscle lipogenic enzymes in the LA/N-cp rat model. The Zucker-fatty mutation, which was mapped to rat chromosome , resulted in a comparable, but not identical obesity syndrome. Breeding experiments by Yen et al …
Cell-Cell Interactions In The Development Of The Vascular System Of Xenopus, Krista Marie Stimson
Cell-Cell Interactions In The Development Of The Vascular System Of Xenopus, Krista Marie Stimson
Dissertations, Theses, and Masters Projects
No abstract provided.