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- Toxicology (2)
- <p>Cystic fibrosis.</p> <p>Lungs - Diseases.</p> <p>Biofilms.</p> <p>Pseudomonas aeruginosa.</p> (1)
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- <p>Fertilization (Biology)</p> <p>Spermatozoa.</p> <p>Gametes.</p> (1)
- <p>Hepatotoxicology.</p> <p>Toxicology.</p> <p>Liver -- Failure.</p> <p>Acetaminophen -- Toxicology.</p> (1)
Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
Diverse Roles Of Pkcα In Vascular Smooth Muscle Contraction, Ava Caudill Dykes
Diverse Roles Of Pkcα In Vascular Smooth Muscle Contraction, Ava Caudill Dykes
Theses, Dissertations and Capstones
A complete understanding of the mechanisms underlying smooth muscle contractility has proven elusive due to the many interacting factors thought to influence contractile behavior in this muscle type. One such factor, protein kinase Cα (PKCα), is proposed to play a central role in both the activation and modulation of smooth muscle contraction. PKCα is activated through a G-protein coupled receptor and is subsequently translocated to its site of action. Although the mechanisms regulating PKCα site specific translocation are not completely understood, it is thought that this process is essential for PKCα specificity of action within the cell. In chapter II …
A Mechanistic Study Of The Protective Effects Of S-Adenosyl-L-Methionine Against Hepatotoxicity Of Acetaminophen, Marcus V. Terneus Jr.
A Mechanistic Study Of The Protective Effects Of S-Adenosyl-L-Methionine Against Hepatotoxicity Of Acetaminophen, Marcus V. Terneus Jr.
Theses, Dissertations and Capstones
Hepatic toxicity is known to be associated with excessive doses of the over-the-counter analgesic, acetaminophen (APAP). APAP overdose is the leading cause of drug-induced liver failure in the United States. APAP hepatotoxicity is dependent on the biotransformation of APAP by cytochrome P450 to the toxic metabolite, N-acetyl-p-benzoquinone imine (NAPQI). APAP, when taken in excessive doses, can lead to severe liver damage with the potential to progress to liver failure. Despite substantial efforts in past studies, the mechanism by which APAP induces such damaging effects is not completely understood. Recent discoveries suggest that glutathione (GSH) depletion, protein alkylation and reactive metabolite …
Protein Kinase C Activity In Mouse Eggs Regulates Gamete Membrane Interaction, Hiroto Akabane
Protein Kinase C Activity In Mouse Eggs Regulates Gamete Membrane Interaction, Hiroto Akabane
Theses, Dissertations and Capstones
Every mammalian life develops from one cell after fertilization of an egg by the sperm. The molecular pathways governing this event are still poorly understood. Numerous reports indicate that mammalian eggs highly express various protein kinase C (PKC) isoforms. Accordingly, we hypothesize that PKC activity in the egg plays an important role during egg-sperm membrane binding and fusion. In this study, we tested our hypothesis in mouse gametes using two types of PKC inhibitors (calphostin c and staurosporine) and the typical PKC activator, phorbol ester 12-tetradecanoylphorbol-13 acetate (PMA). After treatment with the individual drug, eggs were inseminated with sperm. The …
Thimerosal-Induced Neuritoxicity: Apoptosis Occurs Through A Mitochondrial-Mediated Pathway Via The Jnk Signaling Pathway, Michelle L. Herdman
Thimerosal-Induced Neuritoxicity: Apoptosis Occurs Through A Mitochondrial-Mediated Pathway Via The Jnk Signaling Pathway, Michelle L. Herdman
Theses, Dissertations and Capstones
Thimerosal is an organic mercurial containing an ethylmercury moiety attached to the sulfur atom of thiosalicylate. Since the 1930s, thimerosal has been used as an antiseptic and a preservative in a wide variety of products, including medicinal preparations administered to children and pregnant women. Past exposures to mercurials have indicated that mercury is a neurotoxin, and can also affect the kidney, skin, eyes, and immune system. Additionally, fetuses exposed to mercurials are more susceptible to toxicity because the nervous system is continuously developing. However, despite its widespread use, thimerosal was only studied on a limited basis until the end of …
Regulation Of Biofilm Formation Of Pseudomonas Aeruginosa, Nathaniel Edwards Head
Regulation Of Biofilm Formation Of Pseudomonas Aeruginosa, Nathaniel Edwards Head
Theses, Dissertations and Capstones
Cystic fibrosis (CF) is the most common, autosomal recessive lethal genetic disease in the Caucasian population, resulting from a malfunctioned cystic fibrosis transmembrane conductance regulator (CFTR) and leading to bacterial lung infections. P. aeruginosa, an opportunistic pathogen, establishes a chronic infection in CF with a phenotype of overproduction of an exopolysaccharide (alginate) due to host-directed mutagenesis. While free-floating planktonic bacteria can be properly cleared from the CF lung, P. aeruginosa, along with alginate production, establishes an infection in the form of a biofilm which supports its survival in nature and in vivo. As a result, genomic structure, …
Characterization Of The Dna-Binding Properties Of Silent Information Regulator 3 Protein, Cotteka Nichisha Johnson
Characterization Of The Dna-Binding Properties Of Silent Information Regulator 3 Protein, Cotteka Nichisha Johnson
Theses, Dissertations and Capstones
The eukaryotic genome is organized into distinct domains with discrete regulatory potential, influenced by the variation in local chromatin structure. An example of chromatin-mediated consequences on gene expression is mating type determination of yeast Saccharomyces cerevisiae, which depends on silencing of specific gene cassettes. Silencing in yeast involves key proteins, amongst which the Silent Information Regulator (Sir) proteins are essential. Sir1p, Sir2p, and Sir4p are recruited to nucleate silencing events, while Sir3p serves as the pivotal factor in spreading the silent state. This investigation characterizes the DNA binding properties of Sir3p using DNA fragments with varying degrees of inherent flexibility, …