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Dissertations / Theses on the topic 'Hydrogen Peroxide Scavenging Activity'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Miyake, Chikahiro. "Scavenging Systems of Hydrogen Peroxide in Chloroplast Thylakoid Membranes and Algal Cells." Kyoto University, 1994. http://hdl.handle.net/2433/168925.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第5739号<br>農博第793号<br>新制||農||674(附属図書館)<br>学位論文||H6||N2672(農学部図書室)<br>UT51-94-J171<br>京都大学大学院農学研究科農芸化学専攻<br>(主査)教授浅田浩二, 教授山田康之, 教授關谷次郎<br>学位規則第4条第1項該当

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2

Pakarinen, Darius. "On the mechanism of H2O2 decomposition on UO2-surfaces." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240564.

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Deep geological repository has been investigated as a solution for long term storage of spent nuclear fuel in Sweden for more than 40 years now. The Swedish nuclear fuel and waste management company (SKB) are commissioning the deep repository and they must ensure that nuclear waste is isolated from the environment for thousands of years. During this time the containment must withstand physical stress and corrosion. It is important for a safety analysis to determine the different reactions that could occur during this time. If the physical barriers break down, radiolysis of water will occur. Hy

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3

Grimmett, Paul E. "Antimicrobial and spermicidal activity of hydrogen peroxide and nonoxynol-9 based gel preparations." Huntington, WV : [Marshall University Libraries], 2004. http://www.marshall.edu/etd/descript.asp?ref=438.

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4

Pritchard, Rachel Elizabeth. "CATALASE ACTIVITY, POTENTIAL VIRULENCE FACTORS, AND THEIR RESPONSE TO OXYGEN IN MYCOPLASMA IOWAE." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1413553221.

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5

Serra, Maia Rui Filipe. "Relation between surface structural and chemical properties of platinum nanoparticles and their catalytic activity in the decomposition of hydrogen peroxide." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85149.

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The disproportionation of H₂O₂ to H₂O and molecular O₂ catalyzed by platinum nanocatalysts is technologically very important in several energy conversion technologies, such as steam propellant thrust applications and hydrogen fuel cells. However, the mechanism of H₂O₂ decomposition on platinum has been unresolved for more than 100 years and the kinetics of this reaction were poorly understood. Our goal was to quantify the effect of reaction conditions and catalyst properties on the decomposition of H₂O₂ by platinum nanocatalysts and determine the mechanism and rate-limiting step of the reactio

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6

Phillips, Kyle. "Characterisation of a novel soybean candidate glutathione peroxidase/thioredoxin-dependent peroxidase in soybean exposed to osmotic/drought stress." University of the Western Cape, 2012. http://hdl.handle.net/11394/4643.

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>Magister Scientiae - MSc<br>Drought stress is a major contributor to reduced soybean crop yield and quality, this can however be mitigated by the plant’s antioxidant defence mechanisms. One group of antioxidant enzymes that are active in these defence mechanisms are glutathione peroxidases (GPXs). GPXs are antioxidant proteins which are able to reduce H2O2, a toxic reactive oxygen species which accumulates under stress conditions. This study aims at isolating the protein encoded by Glyma01g42840 and determining if it has Phospholipid hydroperoxidase glutathione peroxidase (PHGPX) and/or Thior

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7

Schurman, John Jackson. "Antibacterial Activity of Hydrogen Peroxide Against Escherichia Coli O157:H7 and Salmonella Spp. in Fruit Juices, Both Alone and in Combination With Organic Acids." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34302.

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The antibacterial efficacy of hydrogen peroxide treatments in four fruit juices was determined. Preservative free apple cider, white grape, and purple grape juice were inoculated with ~ 6.4 log CFU/ml of a five strain, acid adapted, nalidixic acid resistant E. coli O157:H7 cocktail. Orange juice was inoculated with a comparable Salmonella spp. cocktail. In the first study, 0.017% and 0.012% H2O2 was added in combination with 0.1% and 0.3% of the dominant organic acid (OA) to 4oC and 25oC juices, with samples taken each day for 21 days. H2O2 was a significant factor in all juices (p < 0.05)

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8

Sturgeon, Katie. "In Vivo and In Vitro Interactions of Oxidative Stress and Laminar Shear Stress on Vascular Endothelial Growth Factor-Mediated Endothelial Nitric Oxide Synthase Activity." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/202937.

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Kinesiology<br>Ph.D.<br>Purpose: Translational research characterizing endothelial dysfunction and the progression of cardiovascular disease (CVD) is necessary for understanding the complex nature of multi-factorial diseases. Perhaps more important though, is understanding the compensatory and adaptive processes associated with regression of diseases and chronic oxidative stress. Vascular endothelial growth factor (VEGF) is an important protein in endothelial health and nitric oxide (NO) production. The purpose of this research was to examine changes in VEGF-mediated endothelial nitric oxide s

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9

Stahel, Anette. "24,25(OH)2D3 and Regulation of Catalase Activity in LNCaP Prostate Cancer." Thesis, University of Skövde, School of Life Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-475.

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<p>The vitamin D metabolite 1,25(OH)2D3 has long been known to inhibit growth of prostate cancer cells and this has been attributed to a VDR-mediated pathway controlling target gene expression, resulting in cell cycle arrest, apoptosis and differentiation. New research has shown that another vitamin D metabolite, 24,25(OH)2D3, inhibits proliferation of prostate cancer cells as well, more specifically, cells of the line LNCaP. It is not clear exactly how 24,25(OH)2D3 exerts this cancer growth inhibition but it has been shown that it is to some extent regulated via G protein coupled signalling p

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10

Hlatshwayo, Siphiwe Gift. "Involvement of abscisic acid and H2O2 in antioxidant enzyme activities mediated by nitric oxide synthase-like activity in maize." University of the Western Cape, 2018. http://hdl.handle.net/11394/6758.

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>Magister Scientiae - MSc<br>In recent years, nitric oxide (NO) has emerged as an important endogenous plant signalling molecule that mediates many developmental and physiological processes. NO regulates the activity of antioxidant enzymes in response to droughtinduced stress by controlling the expression of the genes that encode these enzymes. Antioxidant enzymes function in scavenging reactive oxygen species like superoxide ion (O2 -) and hydrogen peroxide (H2O2) that are generated in response to drought-induced stress and other abiotic stresses. Abscisic acid, a phytohormone that ac

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11

Stahel, Anette. "24,25(OH)2D3 and Regulation of Catalase Activity in LNCaP Prostate Cancer Cells : A Study of Long-term Effects." Thesis, University of Skövde, School of Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-970.

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<p>The vitamin D metabolite 1,25(OH)2D3 has long been known to inhibit growth of prostate cancer cells and this has been attributed to a VDR-mediated pathway controlling target gene expression, resulting in cell cycle arrest, apoptosis and differentiation. New research has shown that another vitamin D metabolite, 24,25(OH)2D3, inhibits proliferation of prostate cancer cells as well, more specifically, cells of the line LNCaP. It is not clear exactly how 24,25(OH)2D3 exerts this cancer growth inhibition but it has been shown that it is to some extent regulated via G protein coupled signalling p

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12

Adams, Ruqaiyah. "Characterization of a novel soybean candidate glutathione peroxidase/thioredoxin-dependent peroxidase under salt stress." Thesis, University of the Western Cape, 2012. http://hdl.handle.net/11394/3800.

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The study aimed to investigate the following: 1. Investigate a putative glutathione peroxidase gene (Glyma17g34110) within Glycine max by an in silico analysis and spatial expression. 2. Determine the effects of exogenously applied nitric oxide on the expression of Glyma17g34110. 3. Investigate the antioxidant mechanism with attention to Glyma17g34110,reactive oxygen species and cell death in the response to salt stress. 4. Establish whether Glyma17g34110 is a glutathione peroxidase or thioredoxindependent peroxidase gene.<br>Magister Scientiae - MSc

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13

Franchini, Rômulo Augusto de Abreu. "Imobilização enzimática para a determinação de peróxido de hidrogênio, catalase e avaliação in vitro da atividade antibacteriana em amostras de mel." Universidade Federal de Juiz de Fora (UFJF), 2010. https://repositorio.ufjf.br/jspui/handle/ufjf/4443.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-05-09T14:17:11Z No. of bitstreams: 1 romuloaugustodeabreufranchini.pdf: 12314039 bytes, checksum: fcf7a0798691ae32d15114b47607205e (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-05-17T14:14:58Z (GMT) No. of bitstreams: 1 romuloaugustodeabreufranchini.pdf: 12314039 bytes, checksum: fcf7a0798691ae32d15114b47607205e (MD5)<br>Made available in DSpace on 2017-05-17T14:14:58Z (GMT). No. of bitstreams: 1 romuloaugustodeabreufranchini.pdf: 12314039 bytes, checksum: fcf7a0798691ae32d15114b

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14

Ipuy, Martin. "Développement de nouveaux chromophores basés sur le groupement tricyanofurane pour différentes applications en biologie." Thesis, Lyon, École normale supérieure, 2014. http://www.theses.fr/2014ENSL0951/document.

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Le tricyanofurane est un groupement extrêmement électro-attracteur grâce à trois groupements nitriles conjugués. Cette caractéristique électronique nous a permis de synthétiser de nouvelles sondes fluorescentes intéressantes pour l’imagerie biologique : de petites molécules possédant un caractère dipolaire très marqué qui leur confère une fluorescence très décalée vers le rouge.Une première application de ce genre de molécules est la détection du pH intracellulaire à l’aide de groupement phénol conjugué au tricyanofurane. Grâce à une rétro-synthèse judicieuse, il a été possible de développer u

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15

Mustaree, Shayla. "The •OH scavenging effect of bromide ions on the yield of H[subscript 2]O[subscript 2] in the radiolysis of water by [superscript 60]Co γ-rays and tritium β-particles at room temperature : a Monte Carlo simulation study". Mémoire, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/8183.

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Abstract: Monte Carlo simulations were used here to compare the radiation chemistry of pure water and aqueous bromide solutions after irradiation with two different types of radiation, namely, tritium β-electrons (~7.8 keV) and [superscript 60]Co γ-rays/fast electron (~1 MeV) or high energy protons. Bromide ions (Br-) are known to be selective scavengers of hydroxyl radicals •OH precursors of hydrogen peroxide H[subscript 2]O[subscript 2]. These simulations thus allowed us to determine the yields (or G-values) of H[subscript 2]O[subscript 2] in the radiolysis of dilute aqueous bromide solution

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16

Morris, James Jeffrey. "The ‘Helper’ Phenotype: A Symbiotic Interaction Between Prochlorococcus and Hydrogen Peroxide Scavenging Microorganisms." 2011. http://trace.tennessee.edu/utk_graddiss/1004.

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The unicellular cyanobacterium Prochlorococcus is the numerically dominant photosynthetic organism throughout the temperate and tropical open oceans, but it is difficult to grow in pure cultures. We developed a system for rendering spontaneous streptomycin-resistant mutants of Prochlorococcus axenic by diluting them to extinction in the presence of “helper” heterotrophic bacteria, allowing them to grow to high cell concentrations, and then killing the helpers with streptomycin. Using axenic strains obtained in this fashion, we demonstrated that Prochlorococcus experiences a number of growth

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17

Ju, Tsui-Hua, and 朱翠華. "Hypoxi markedly inceeases catalase activity in Deinococcus radiodurans but without accompanying hydrogen peroxide resistance." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/67597615274086458405.

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18

Zhu, Cui-Hua, and 朱翠華. "Hypoxia markedly increases catalase activity in deinococcus radiodurans but without accompanying hydrogen peroxide resistance." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/94549388796769555315.

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19

Huang, Yu-Shan, and 黃鈺珊. "Effect of Homocysteine, Homocysteine Thiolactone, and Hydrogen Peroxide on Iron Regulatory Proteins Activity in PC-12 and HL-60 Cells." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/52949046547816538997.

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碩士<br>國立臺灣大學<br>農業化學研究所<br>91<br>Elevated homocysteine (Hcy) level is an independent risk factor for cardiovascular disease and is associated with many other diseases. Elevated blood Hcy level and iron accumulation in substantia nigra (SN) of brain are observed in patients of of Parkinson’s disease. It is known that Hcy causes cell injury and/or dysfunction via oxidative stress. HL-60 cell incubated with homocysteine thiolactone (HcyT) has increased intracellular H2O2 and cell apoptosis. We also known that exposure of cells to H2O2 induces a rapid posttranslational activation of iron regulator

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20

Wood, John M., Nick C. Gibbons, Elloof M. M. Abou, and Karin U. Schallreuter. "Hydrogen peroxide-mediated oxidative stress disrupts calcium binding on calmodulin: more evidence for oxidative stress in vitiligo." 2009. http://hdl.handle.net/10454/3001.

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No<br>Patients with acute vitiligo have low epidermal catalase expression/activities and accumulate 10 -3 M H 2O 2. One consequence of this severe oxidative stress is an altered calcium homeostasis in epidermal keratinocytes and melanocytes. Here, we show decreased epidermal calmodulin expression in acute vitiligo. Since 10 -3M H 2O 2 oxidises methionine and tryptophan residues in proteins, we examined calcium binding to calmodulin in the presence and absence of H 2O 2 utilising 45calcium. The results showed that all four calcium atoms exchanged per molecule of calmodulin. Since oxidised calmo

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21

Schallreuter, Karin U., Mohamed M. A. Salem, Nick C. Gibbons, et al. "Blunted epidermal l-tryptophan metabolism in vitiligo affects immune response and ROS scavenging by Fenton chemistry, part 2: epidermal H2O2/ONOO−-mediated stress in vitiligo hampers indoleamine 2,3-dioxygenase and aryl hydrocarbon receptor-mediated immune response signaling." 2012. http://hdl.handle.net/10454/7435.

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no<br>Vitiligo is characterized by a mostly progressive loss of the inherited skin color. The cause of the disease is still unknown, despite accumulating in vivo and in vitro evidence of massive oxidative stress via hydrogen peroxide (H2O2) and peroxynitrite (ONOO−) in the skin of affected individuals. The most favored hypothesis is based on autoimmune mechanisms. Since depletion of the essential amino acid l-tryptophan (Trp) severely affects various immune responses, we here looked at Trp metabolism and signaling in these patients. Our in vivo and in vitro data revealed total absence of epide

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22

Dukoff, David. "The Impact of ROS Scavenging on NMDA and AMPA Receptor Whole Cell Currents in Pyramidal Neurons of the Anoxia Tolerant Western Painted Turtle." Thesis, 2013. http://hdl.handle.net/1807/42826.

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Extended periods of oxygen deprivation cause brain death in mammals but the western painted turtle overwinters in anoxic mud for months without damage. Neural protection is achieved through decreases in the whole cell currents of N-methyl-D-aspartate and alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (NMDAR and AMPAR) that are dependent on a mild increase in intracellular calcium from the mitochondria. The goal of this research was to determine if natural anoxic decreases in reactive oxidative species (ROS) serve as the signal to bring about these changes. Reductions in cel

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23

Schallreuter, Karin U., Mohamed M. A. Salem, Nick C. Gibbons, et al. "Blunted epidermal l-tryptophan metabolism in vitiligo affects immune response and ROS scavenging by Fenton chemistry, part 1: epidermal H2O2/ONOO−-mediated stress abrogates tryptophan hydroxylase and dopa decarboxylase activities, leading to low serotonin and melatonin levels." 2012. http://hdl.handle.net/10454/7436.

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no<br>Vitiligo is characterized by a progressive loss of inherited skin color. The cause of the disease is still unknown. To date, there is accumulating in vivo and in vitro evidence for massive oxidative stress via hydrogen peroxide (H2O2) and peroxynitrite (ONOO−) in the skin of affected individuals. Autoimmune etiology is the favored theory. Since depletion of the essential amino acid l-tryptophan (Trp) affects immune response mechanisms, we here looked at epidermal Trp metabolism via tryptophan hydroxylase (TPH) with its downstream cascade, including serotonin and melatonin. Our in situ im

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24

McCanna, David. "Development of Sensitive In Vitro Assays to Assess the Ocular Toxicity Potential of Chemicals and Ophthalmic Products." Thesis, 2009. http://hdl.handle.net/10012/4338.

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The utilization of in vitro tests with a tiered testing strategy for detection of mild ocular irritants can reduce the use of animals for testing, provide mechanistic data on toxic effects, and reduce the uncertainty associated with dose selection for clinical trials. The first section of this thesis describes how in vitro methods can be used to improve the prediction of the toxicity of chemicals and ophthalmic products. The proper utilization of in vitro methods can accurately predict toxic threshold levels and reduce animal use in product development. Sections two, three and four describe t

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