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    Evaluation of Drug "X" in Preclinical Models of Parkinson's Disease

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    Author
    Samtani, Grace
    Issue Date
    2017
    Advisor
    Falk, Torsten
    
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    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Parkinson's disease (PD) is a hypokinetic, age-related movement disorder associated with chronic, progressive degeneration of dopaminergic neurons, with cell bodies located in the substantia nigra pars compacta (SNpc) and axon terminals in the striatum. Striatal depletion of the neurotransmitter dopamine (DA) gives rise to the cardinal PD motor symptoms. We utilized a 6-hydroxydopamine (6-OHDA) animal PD model to test the application of a preclinical drug candidate, drug "X", in ameliorating and/or preventing advanced parkinsonism in two studies. First, a neurorestoration study tested the efficacy of drug "X" in restoring motor functionality to animals in which the 6-OHDA lesion had fully developed. Second, a neuroprotection study assessed the effectiveness of drug "X" in preventing the initial development of the 6-OHDA lesion and the onset of motor impairments. Behavioral data indicate that there are no significant differences between the control and drug "X" groups in both studies, suggesting that drug "X" does not improve established severe PD motor deficits nor prevent their initial development. However, we are analyzing brain tissue harvested to 1) verify the extent of the lesion with stereology in the SNpc, 2) evaluate striatal DA levels, and 3) investigate any neuroprotective effects of drug "X" on nigral DAergic neurons.
    Type
    text
    Electronic Thesis
    Degree Name
    B.S.
    Degree Level
    bachelors
    Degree Program
    Honors College
    Neuroscience and Cognitive Science
    Degree Grantor
    University of Arizona
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    Honors Theses
    Honors Theses

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