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MEDICINAL BENEFITS OF SEA CUCUMBERS FROM THE WATERS OF THE EASTERN UNITED STATESEaint Honey Aung Win (13163001) 27 July 2022 (has links)
<p>Sea cucumbers have been found to contain bioactive compounds such as saponin, fucoidan, frondoside, and glycosides that have pharmacological properties like antitumor, antibacterial, anti-inflammation, and antihyperglycemic activity. Although several species of sea cucumbers have been studied and reared for the food and medicinal industries, not much research has been conducted on the species in the waters of the Eastern United States. In this research, physiological and immunological parameters of coelomic fluid from <em>Cucumaria</em> <em>frondosa</em>, <em>Isostychopus</em> <em>badionotus</em>, and <em>Pentacta</em> <em>pygmaea</em> were compared to find the most promising candidate with these properties and pharmacological benefits. We found that <em>C. frondosa</em> was the species with the best immunological and physiological parameters among the three studied. <em>C. frondosa</em> illustrated that its coelomic fluid contains the highest concentrations of cells and lysozymes that had the highest activity. Using <em>C. frondosa</em>’s tissue extracts and coelomic fluid, the ability of the extracts and coelomic fluid to inhibit murine melanoma cells (B16-F10) and modulate T-lymphocytes <em>in vitro</em> were investigated. Although no significant differences were seen statistically, the experiments illustrated that T-lymphocytes were highly activated at higher concentrations (0.001g/uL-0.0002g/uL) for tissue extracts and at lower concentrations (0.000008g/uL) for coelomic fluid. On the other hand, melanoma cells were inhibited highest at lower concentrations (0.000008g/uL-0.0000016/uL). In addition to these studies, the antibacterial activity of <em>C. frondosa</em> extract was tested on ten pathogenic bacterial species. Antibacterial activity of the <em>C. frondosa</em> extract was not seen in this experiment. However, hemolytic activity by compounds present in <em>C. frondosa</em> extracts was seen in blood agars culturing <em>Streptococcus pneumoniae</em> and <em>Enterococcus faecalis</em> in our experiment. Lastly, an <em>in vivo </em>study was conducted to see if <em>C. frondosa</em> extract can modulate stress in Nile tilapia. In our experiment, we observed that <em>C. frondosa</em> extract was able to enhance the activity of one of the parameters, phagocytic capacity significantly. However, we are not able to conclude that <em>C. frondosa</em> extract was able to mitigate chronic stress from the results obtained. Overall, observing the results from the projects, we cannot conclude that <em>C. frondosa</em> extracts illustrated pharmacological properties. Extensive studies are recommended and required to use <em>C. frondosa</em> extract for medicinal purposes. </p>
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