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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
The Relationship Between Biofilm Production And Human Respiratory Cell Attachment And Invasion By Acinetobacter Baumannii, Rachel A. Pearson
The Relationship Between Biofilm Production And Human Respiratory Cell Attachment And Invasion By Acinetobacter Baumannii, Rachel A. Pearson
Theses and Dissertations
Acinetobacter baumannii is an opportunistic gram-negative bacterial pathogen that causes many nosocomial infections in immunocompromised individuals. Common infections include catheter-associated urinary tract infections, ventilator-associated pneumonia, skin and soft tissue infections, and bloodstream infections that often lead to septicemia. Increasing multidrug resistance (MDR) in A. baumannii warrants new approaches to understanding its virulence mechanisms and pathogenicity. As a first step in infection, A. baumannii can attach to host cells, providing a surface for the bacteria to grow and perhaps facilitating biofilm formation and subsequent tissue invasion. In this study, we evaluated antibiotic resistance and characterized biofilm formation, attachment, invasion, and surface …
Non-Native Leaf Litter Modifies Algal Resources With Effects On Tadpole Growth, Spencer L. Cruz
Non-Native Leaf Litter Modifies Algal Resources With Effects On Tadpole Growth, Spencer L. Cruz
Theses and Dissertations
Leaf litter species play a key role in determining the quality and quantity of algal resources in aquatic ecosystems as a cross-boundary subsidy. The invasion of non-native plant species into forests can alter aquatic resources. I investigated the effects of non-native leaf litter species on algal resources and green frog, Lithobates clamitans, development using a randomized complete block experiment that lasted 288 days. In experimental ponds, I added two non-native and two native leaf litter species in the presence and absence of tadpoles. Early in the experiment, Japanese honeysuckle and Chinese privet decreased periphyton N:P ratios and stimulated tadpole growth …
An Evaluation Of The Medicinal Plants Of Andros Island, Bahamas, Vivian Pedrozo
An Evaluation Of The Medicinal Plants Of Andros Island, Bahamas, Vivian Pedrozo
Theses and Dissertations
The earliest civilizations have been using plants as their foundation for healing and medicinal traditions for thousands of years. The use of plant medicinals, more commonly known as “bush medicine” on Andros Island, has been rapidly decreasing due an increased presence of western medicine and increased population pressures from urbanization that are threatening local biodiversity hotspots. Ethnobotany is not only important from a conservation standpoint but is also used to preserve traditional knowledge of herbal medicinals and applications, the people of Andros continue to rely on bush medicine, mainly in the form of teas to help manage health related problems. …
A Dietary Analysis On Panamanian Bat Species, John C. Waller
A Dietary Analysis On Panamanian Bat Species, John C. Waller
Theses and Dissertations
Bats are found all over the world, and they are the most diverse group of mammals in the tropics. They are a key component in all ecosystems as predators, pollinators, or seed dispersers. As a conservation tool, dietary studies show what different bat species need to survive. Through metabarcoding, the diet can be accurately assessed. This method involves the DNA extraction of material from the feces of the individual being studied. PCR is used to amplify the DNA and next generation sequencing is used to identify, separate, and align the DNA that was extracted. By comparing the results from different …
The Effects Of Ethynodiol Diacetate On Epinephrine-Treated Glial-Derived Cells, Jesse D. Hunt
The Effects Of Ethynodiol Diacetate On Epinephrine-Treated Glial-Derived Cells, Jesse D. Hunt
Theses and Dissertations
Neuroprotective agents, including specific hormones, may play a role in preventing cellular damage following an ischemic event or brain injury. Astrocytes are specialized glial cells within the central nervous system that play roles in synapse development, blood flow regulation, extracellular homeostasis, synapse function, energy and metabolism (Sofroniew and Vinters, 2009). Research using astrocytes in cell viability studies can be beneficial in deepening our understanding of specific neuroprotective effects of various steroid hormones including progesterone. Progesterone has been shown to have neuroprotective capabilities in the central nervous system (Scarpin et ah, 2009). Although progesterone shows great therapeutic potential, effects of the …
The Involvement Of Progesterone In Glial Cell Viability, Tracee L. Guthrie
The Involvement Of Progesterone In Glial Cell Viability, Tracee L. Guthrie
Theses and Dissertations
We studied the effects of ethynodiol diacetate on the viability of hydrogen peroxide stressed glial cells. We wanted to determine the extent in which varying concentration of ethynodiol diacetate affect cell viability of cultured glial cells from hydrogen peroxide toxicity. Based on previous studies, we predicted that the viability of hydrogen peroxide-stressed cells will increase with the presence of the progesterone, ethynodiol diacetate, and that cell viability will increase with increasing concentration of ethynodiol diacetate. Glial cells of 1x10° cells/well were introduced into a 96-well plate and allowed to grow for 24 hours in an incubator at 37°C and 5% …