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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Role Of P450 Enzymes In Tobacco Dependence And Lung Tumorigenesis, Lei Li
Role Of P450 Enzymes In Tobacco Dependence And Lung Tumorigenesis, Lei Li
Legacy Theses & Dissertations (2009 - 2024)
The overall aim of this study is to better define the roles of P450 enzymes, particularly those in the CYP2A, 2B, and 2F gene subfamilies, in the metabolism and actions of tobacco-related chemicals. Tobacco smoke contains numerous compounds that are deleterious to health, including the primary addictive component nicotine and procarcinogenic compounds, such as naphthalene (NA) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK). Our main hypotheses are i) that CYP2A and 2B enzymes are largely responsible for nicotine metabolism, and they can impact nicotine dependence; and ii) that CYP2A, 2B, and 2F enzymes play important and tissue-specific roles in NA and NNK bioactivation, leading …
Assessment Of Human Exposure To Perchlorate And Perfluoroalkyl Substances In The United States : Biomonitoring And Environmental Monitoring Approaches, Qian Wu
Legacy Theses & Dissertations (2009 - 2024)
Perchlorate is an oxidant in solid fuels and explosives and is produced in large quantities worldwide. Perchlorate is a ubiquitous environmental contaminant and is present in water, food, indoor environment and humans. Human exposure to perchlorate is a concern due to its ability to disrupt the thyroid gland functions.
Function And Regulation Of Intestinal P450 Enzymes : Insights From Conditional Cytochrome P450 Reductase Knockout Mouse Models, Yi Zhu
Legacy Theses & Dissertations (2009 - 2024)
The overall goal of this thesis work was to investigate the function and regulation of intestinal P450 enzymes (P450s). The central hypotheses are that 1) small intestinal (SI) P450s play an important role in the first-pass clearance of oral drugs and in bioactivation of chemicals that cause intestinal toxicity, 2) endogenous regulatory compounds produced by intestinal P450s are important for protection against chemical-induced colon inflammation, and 3) there is a cross talk between the liver and the SI that helps to maintain the overall xenobiotic-metabolism capacity of the digestive tract.
Exposure To Persistent Organic Pollutants And Metabolic Diseases, Zafar Zayirovich Aminov
Exposure To Persistent Organic Pollutants And Metabolic Diseases, Zafar Zayirovich Aminov
Legacy Theses & Dissertations (2009 - 2024)
Background: The metabolic syndrome (MetS) is a group of diseases that tend to occur together, including diabetes, hypertension, central obesity, cardiovascular disease and hyperlipidemia. Exposure to persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) have been associated with increased risk of development of several of the components of the MetS.