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 35 for “"bisphenol A (BPA)"”.
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Characterization, Functionalization, and Adsorption Behavior of Single-Walled Carbon Nanotubes towards Bisphenol A and 17 Β- Estradiol
… representative endocrine disrupting compounds: bisphenol A (BPA) and 17 β-estradiol (E2). Initially, a protocol was developed to understand the effect of ultrasonication on the dispersion of SWNTs in water. The results of adsorption experiments have showed that BPA and E2 can be removed from …
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Examining women’s knowledge, health risk perceptions, beliefs and behaviours in relation to toxic chemicals commonly found in personal care and household products: a mixed-methods approach
… chemicals in PCHP. It focused on lead, parabens, bisphenol A (BPA), phthalates, triclosan, and perchloroethylene. A questionnaire was administered to 200 women, and 10 women participated in virtual interviews. Multivariate analysis found positive associations between avoidance of lead, parabens, …
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Chronic toxicity of phthalates, biphenol and a Canadian bottled water stored under different light regimes using the Cnidarian Hydra Viridissima©
… of polycarbonate and polyethylene plastics, bisphenol A (BPA) and two phthalate esters: dibutyl phthalate (DBP) and bis (2- ethylhexyl) phthalate (DEHP) along with one type of commercial bottled water were investigated. One brand of bottled water was analyzed over four months (stored in light …
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Effects of Bisphenol-A and Styrene on Fertilization and Development of the Purple Sea Urchin (Strongylocentrotus purpuratus)
… birds, but they also leach chemicals, such as bisphenol-A (BPA) and styrene into the aquatic environment. While some of these chemicals are known to be toxic, few studies have examined their effects on broadcast spawning marine invertebrates, specifically at environmentally relevant …
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The use of cyclodextrin template-based metal oxide nanomaterials in the development of electrochemical sensors for phenolic endocrine disruptor compounds
… was 8.5 x 10-8 mol/cm2. Sensor analysis of bisphenol A (BPA) was carried out using cyclic voltammetry (CV) and square wave voltammetry (SWV) based on amperometric techniques which gave a linear range of 0.50 × 10-6 M to 50 × 10-6 M; limit of detection of 0.156 x 10-6 M and order of magnitude …
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Circulating sex hormone levels in rats: a systematic analysis of the literature and perinatal BPA study
… of the known endocrine disrupting chemical, bisphenol-A (BPA), at environmentally relevant ranges on the sex hormones, follicle-stimulating hormone (FSH), luteinizing hormone (LH), T, E2, and P4 in perinatally exposed, infantile rats. We found no effect of BPA on sex hormone levels in these …
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Parental Self-Efficacy: Development of a Measure to Reduce Children’s Contaminant Exposure
… (ECs) such as lead, mold, mercury, radon, and bisphenol A (BPA) are prevalent in American homes and have dire consequences to children’s development, especially for children under six. To optimize the efficacy of programs aiming to prevent exposure to ECs, it is necessary to investigate …
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Bisphenol A and Obesity
… evidence that environmental chemicals, such as Bisphenol A (BPA), recently linked to altered adipose and glucose metabolism, may be aggravating the problem. Due to chronic human exposure, research is needed to confirm whether or not BPA is able to increase the fat deposition or otherwise alter …
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Hormonal regulation of bone health: novel understandings of xenoestrogens and estrogen receptor-[alpha]
… exposure to xenoestrogens, specifically bisphenol-A (BPA) and bisphenol-S (BPS), on male and female offspring. We found that both young and aged male ER[alpha] knockout (ERKO) animals had impaired measures of cortical geometry, but improved measures of trabecular microarchitecture, …
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Der Einfluss endokriner Disruptoren auf das Fettgewebe der Sprague-Dawley-Ratte
Die Effekte von Dibutylphthalat (DBP), Bisphenol A (BPA), Benzophenon 2 (BP2), Linuron (LIN), Procymidon (PROC) und Östrogen (E2) auf drei unterschiedliche Fettdepots (subkutanes, mesenteriales und paratibiales Fett) sowie auf die Blutserum- Spiegel (Insulin, Glukose, Leptin und IGF-1) der …
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Set shifting ability of rats perinatally exposed to bisphenol A and a high fat diet
Bisphenol-A (BPA) is an endocrine disruptor found ubiquitously in the environment. It has been shown to have a wide variety of effects on behavior and cognition as well as causing inflammation in the brain. Additionally, the traditional American diet is high fat, which also contributes to both …
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Effects of bisphenol A exposure during early development on behavior and anatomy of the prefrontal cortex in adult male and female rats
Previous work has shown that exposure to bisphenol A (BPA) during early development can affect behavior and sexual differentiation of the brain in rodents, although few studies have examined effects on cognitive behavior and associated areas of the brain. The current study examined if exposure to …
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Progesterone receptor targets play critical roles in maintaining pregnancy and disease prevention
… that exposure to the environmental toxicant bisphenol-A (BPA) causes increased methylation at the Hand2 promoter and reduced HAND2 expression. BPA also stimulated expression of fibroblast growth factors (FGF), stromal derived factors that drive uterine epithelial proliferation. Increased …
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Development of novel adsorbents for the removal of emerging contaminants from water
… estrogen hormones, perfluoro compounds (PFCs), bisphenol-A (BPA), and 1,4-dioxane have been detected in natural water at many places. The existing conventional wastewater treatment systems are not designed for the removal of these contaminants. This critical issue leads to the need for the …
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Immobilisierung von BPA-Bindeproteinen an der Oberfläche von Hefezellen
… cells being able to bind the xeno- estrogen Bisphenol A (BPA) at their surface. In order to measure the amount of BPA bound by yeast cells a new method for the quantification of BPA in aqueous solutions was developed in cooperation with Markus Naaßner (Biology V, RWTH Aachen). This method …
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Chemical Mixtures of Xenoestrogens and Their Metabolites Alter Estradiol-Induced Non-Genomic Signaling
… natural responses of physiologic estrogens. Bisphenol-A (BPA), a plastics monomer, is potently estrogenic via non-genomic signaling; however, bisphenol-S (BPS), a BPA substitute, has unknown endocrine actions. Nonylphenol is a surfactant and a ubiquitous contaminant. Our goals were to use a …
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Xenoestrogen-Specific Mechanisms of Developmental Reprogramming Correlate With Gene Expression and Tumor Development
… xenoestrogens, including genistein (GEN) and bisphenol A (BPA), reprogram estrogen-responsive gene expression in the myometrium and promote the development of uterine leiomyoma. We proposed the mechanism that is responsible for the developmental reprogramming of gene expression was through …
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Synthesis and evaluation of vegetable (soybean) oil based epoxy resin for beverage can coating and enzymatic synthesis and characterization of tailored N&C end protected oligopeptides
… used coatings at present are derived from bisphenol A (BPA) based epoxy reins. However, due to perceived endocrine disrupting nature of BPA and consequential adverse effects on humans and wildlife concerns for the use of BPA based coatings and its leaching into beverages have been …
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The direct effects of estradiol and several xenoestrogens on cell numbers of early- vs. late-stage prostate cancer cells
… cell numbers in both early and late-stage cells. Bisphenol A (BPA) slightly, though significantly, increased cell numbers in LAPC-4 cells only. Again, control of cyclin D1 protein levels was a key mediator of the growth change effects. The findings of these studies should be relevant to the …
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G-Protein-Coupled Estrogen Receptor-1 (GPER): A Potential Target For Xenoestrogens During Vertebrate Embryogenesis.
… to reference xenoestrogens - genistein and bisphenol-A (BPA) - with known affinity to human GPER resulted in concentration-dependent effects (albeit with lower potency than G-1) on the developing cardiovascular system. In order to begin revealing mechanisms of G-1-, genistein-, and …
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