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    Zinc oxide nanoparticles and SH-SY5Y cell line

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    Author
    Zheng, Jinghui
    郑, 静慧
    Chair
    Duffy, Lawrence
    Committee
    Dunlap, Kriya
    Drew, Kelly
    Das, Debendra
    Metadata
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    URI
    http://hdl.handle.net/11122/4607
    Abstract
    The Arctic and sub-arctic regions are impacted by the growth of the global nanotechnology industry. Nanomaterials have unique chemical and physical properties that may lead to toxicological effects that interfere with normal cellular metabolism. Zinc oxide nanoparticles (ZnO NPs) are now very common and widely used in daily life. In industry, ZnO NPs are used to protect different materials from damage caused by UV exposure. The scientific literature suggests that ZnO NPs can have negative impacts on both living organisms and plants. However, there is a paucity of research on the mechanisms by which ZnO NPs may affect the neuronal cells. This study investigates how ZnO NPs interact with the neuroblastoma cell line SH-SY5Y. Using transmission electron microscopy, we observed that the ZnO NPs form 36 nm particles on average, and increase the level of vascular endothelial growth factor (VEGF) in extracellular fluid, as measured by an enzyme-linked immunosorbent assay (ELISA). Moreover, ZnO NPs, in presence of tumor neucrosis factor- α (TNF-α), can also decrease the level of extracellular VEGF compared with TNF-a treatment alone. These findings suggest the basis for more studies on understanding the mechanism by which ZnO NPs impact cytokine signaling. Another direction is using ELISA technology to observe the interactions of NPs with different cell types such as neuronal stem cells.
    Date
    2013-08
    Type
    Thesis
    Collections
    Chemistry and Biochemistry

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